- published: 19 Jun 2017
- views: 24035
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Paul M. Dirac Speaking to F. Hund on Symmetry in Relativity, Quantum Mechanics and Physics of Elementary Particles.
Filmed in Göttingen around 1982.
Abstract of interview:
Symmetry as central concept in theoretical physics. Space and time according to Lorentz-transformations. Matter and anti-matter. Dirac's definition of symmetry. Fermions. Negative energy levels. Einstein's general theory of relativity. Natural time and length. Cosmology and gravitation. Relative quantum mechanics. Atomic constants.
1975 Christchurch - New Zealand. Dirac's comments here can be nicely joined with the words of Heisenberg at http://www.youtube.com/watch?v=ZqfTO4NTqJ4 . Thanks to ThoughtThinksYou.,,this too is well worth listening to.
Branimir Vasilic has also kindly cleaned the sound and removed the 50 cycle hum. Big thanks - (I don't know how to do this!) See http://www.youtube.com/user/el3ktropionir/videos.
I'm very sorry the quality is so poor - these movies were made from old spool video tapes when the first video recorders had just become available in New Zealand. (The magnetic coating brushes off the tape when touched.) I only posted these because no other better stuff like this has yet been offered to the public. I found these lectures after years of thinking I'd stupidly lost them. I was recently cleaning out the garage and there they were! I had to share them immediately just in case I die tomorrow and no-one else in the world could offer anything like these little treasures. Although these recordings are substandard, I hope someone out there may enjoy them as much as I have. These movies suffer from age so for this, again, I offer my sincere apologies. Dirac deserves much better than this. I teach school but not at this level. Here they are then for you smarter guys out there. Dirac can never be forgotten....
- published: 28 Jan 2013
- views: 181652
Adjunct Professor of Physics at Northeastern University in Boston, Graham Farmelo, on Paul Dirac and the Religion of Mathematical Beauty. Apart from Einstein, Paul Dirac was probably the greatest theoretical physicist of the 20th century. Dirac, co-inventor of quantum mechanics, is now best known for conceiving of anti-matter and also for his deeply eccentric behavior. For him, the most important attribute of a fundamental theory was its mathematical beauty, an idea that he said was "almost a religion" to him.
- published: 02 Mar 2012
- views: 111006
Speaker: Graham Farmelo
Filmed at The Royal Society, London on Fri 04 Mar 2011 1pm - 2pm
http://royalsociety.org/events/2011/paul-dirac/
- published: 10 Dec 2013
- views: 86043
When quantum mechanics and relativity are combined to describe the electron the result is the Dirac equation, presented in 1928. This equation predicts electron spin and the existence of anti-matter.
- published: 19 Dec 2015
- views: 23307
PDF: http://aula141.cat/wp-content/uploads/2015/10/Presentaci%C3%B3n_Dirac.pdf
Resumen breve de la vida del físico Paul Dirac.
Celebrado en el http://aula141.cat/category/videos/
A cargo de Javier García
- published: 16 Oct 2015
- views: 36000
Paul Dirac was one of the most proficient theoretical physicists of the 20th century. In this interview, Dirac himself talks about the existence of dimensionless, fundamental constants in physics. These constants are numbers, usually ratios, which contain no units and are therefore universal. No matter what units you use, a dimensionless number will always be measured to be the same. The most widely known example, from mathematics, is Pi which is the ratio of the circumference of a circle to the diameter of the circle. No matter in what units you measure both the circumference and diameter of a circle, be it feet, meters or stadia, Pi will always be 3.14159265.....
The fact that fundamental physics constants exist as dimensionless constants means that they can act as landmarks in a physical theory; if predictions are made by a theory that create a dimensionless constant of a given value and if that value is then confirmed by experiment then the theory is deemed acceptable in physics. An example of this is the lepton g-factor in physics, by which it is possible using Quantum Electrodynamics, to predict its value theoretically which matches experimental measurements to an accuracy of 1 part in a billion. This is the most accurate prediction in the history of mankind and demonstrates the predictive power of quantum mechanics, no matter how strange it is.
Paul Dirac also seems to make reference to his famous and controversial "Large Number Hypothesis" here, which is not accepted by many theoretical physicists, stating that the similar sizes seen in some of fundamental physics constants is coincidental. It seems a crucial part in Dirac's thinking what there were no coincidences in physics and that theory should be able to explain why certain numbers are so large, independent of units, compared to others.
In a way Dirac could be correct in certain aspects of this, as the observed range of the fundamental forces of nature, independent of units, are a result of the nature of the forces themselves are are not entirely coincidental. For example, the weak nuclear force is short ranged due to the Higg's mechanism and the Strong nuclear force is short ranged due to the property of Asymptotic Freedom in QCD, where the strong force screens itself at short distances, making it easy for the force to bind quarks and gluons, and strong at large distances making quarks difficult to break apart thus keeping them confined in protons and neutrons. The strength of the electromagnetic force is also dependent on the distance, as screening of the vacuum is diminished at extremely short distances making the electric charge infinitly large at singular points. These infinities led to the development of renormalization being developed to perform calculations in quantum field theory which was a procedure which Dirac disliked, possibly because it was a way to eliminate large numbers rather than explain their existence. Nevertheless, this method does work so there may in fact be no reason for why large numbers exist in physics, anymore than the reason for the infinite regress of decimal points seen in many mathematical constants, such as Pi or Euler's Constant.
His dislike of renormalization, developed by Feynman and others to reconcile theory and experiment, and his pursuit of the Large Number Hypothesis meant that Dirac was also a controversial figure in the physics community, sometimes viewing pure theory as being superior to experimental verification.
Paul Adrian Maurice Dirac was one of the founders of quantum theory and reconciled quantum mechanics with Einstein's theory of special relativity in the equation which bears his name, the Dirac Equation.
Using this equation, Dirac predicted the existence of antimatter by finding that for his equation to work, charged quanta as described by relativity must be roots of the square root of the normalized charge of a particle, hence forming positive and negative terms.
From the relativistic terms in his equation Dirac also described the existence of quantum spin as a relativistic phenomenon and described the existence of fermions, by a reinterpretation of Dirac's equation as a "classical" field equation for any point particle of spin ħ/2, itself subject to quantisation conditions involving anti-commutators.
Werner Heisenberg later interpreted the equation as a quantum field equation accurately describing all elementary matter particles -- today quarks and leptons -- this Dirac field equation is as central to theoretical physics as the Maxwell, Yang--Mills and Einstein field equations. Dirac is regarded as the founder of quantum electrodynamics, being the first to use that term. He also introduced the idea of vacuum polarisation in the early 1930s. This work was key to the development of quantum mechanics by the next generation of theorists, and in particular Schwinger, Feynman, Sin-Itiro Tomonaga and Freeman Dyson in their formulation of quantum electrodynamics.
- published: 22 Nov 2013
- views: 83257
Part 1 of a series: covering Dirac Notation, the measurable Hermitian matrix, the eigenvector states and the eigenvalue measured outcomes and application to photon polarisation
- published: 20 Aug 2013
- views: 266932
PDF: http://aula141.cat/wp-content/uploads/2015/10/Presentaci%C3%B3n_Dirac.pdf
Trato de explicar con matemáticas sencillas la esencia básica de la ecuación de Dirac. En esta ecuación está escondido el origen de la antimateria.
Conferencia celebrada en http://aula141.cat/category/videos/
A cargo de Javier García.
- published: 16 Oct 2015
- views: 54126
Introduction to the Dirac Delta Function
Watch the next lesson: https://www.khanacademy.org/math/differential-equations/laplace-transform/properties-of-laplace-transform/v/laplace-transform-of-the-dirac-delta-function?utm_source=YT&utm;_medium=Desc&utm;_campaign=DifferentialEquations
Missed the previous lesson?
https://www.khanacademy.org/math/differential-equations/laplace-transform/properties-of-laplace-transform/v/inverse-laplace-examples?utm_source=YT&utm;_medium=Desc&utm;_campaign=DifferentialEquations
Differential Equations on Khan Academy: Differential equations, separable equations, exact equations, integrating factors, homogeneous equations.
About Khan Academy: Khan Academy offers practice exercises, instructional videos, and a personalized learning dashboard that empower learners to study at their own pace in and outside of the classroom. We tackle math, science, computer programming, history, art history, economics, and more. Our math missions guide learners from kindergarten to calculus using state-of-the-art, adaptive technology that identifies strengths and learning gaps. We've also partnered with institutions like NASA, The Museum of Modern Art, The California Academy of Sciences, and MIT to offer specialized content.
For free. For everyone. Forever. #YouCanLearnAnything
Subscribe to KhanAcademy’s Differential Equations channel:: https://www.youtube.com/channel/UCxSQHGkaDv8UKXE0TUbsOIg?sub_confirmation=1
Subscribe to KhanAcademy: https://www.youtube.com/subscription_center?add_user=khanacademy
- published: 07 Oct 2009
- views: 320693
각종 커뮤니티를 가성비 최강이라는 입소문과 함께 뜨겁게 달구고 있는 바로 그 이어폰 소니캐스트 DIRAC!
벌써 6차 판매까지 완판 되었어요!
사실 제가 비싼 이어폰을 써본적은 별로 없기에 어느정도로 좋은지는 잘 모르겠습니다만, 살면서 써본 이어폰 중에는 가장 좋은것 같습니다......아마도???
- published: 20 Aug 2017
- views: 6919
developed with YouTube
Paul Dirac
Paul Adrien Maurice Dirac OM FRS (/dɪˈræk/ di-RAK; 8 August 1902 – 20 October 1984) was an English theoretical physicist who made fundamental contributions to the early development of both quantum mechanics and quantum electrodynamics. He was the Lucasian Professor of Mathematics at the University of Cambridge, a member of the Center for Theoretical Studies, University of Miami, and spent the last decade of his life at Florida State University.
Among other discoveries, he formulated the Dirac equation, which describes the behaviour of fermions and predicted the existence of antimatter. Dirac shared the Nobel Prize in Physics for 1933 with Erwin Schrödinger, "for the discovery of new productive forms of atomic theory". He also did work that forms the basis of modern attempts to reconcile general relativity with quantum mechanics.
He was regarded by his friends and colleagues as unusual in character. Albert Einstein said of him, "This balancing on the dizzying path between genius and madness is awful". His mathematical brilliance, however, means he is regarded as one of the most significant physicists of the 20th century.
This page contains text from Wikipedia, the Free Encyclopedia -
https://wn.com/Paul_Dirac
This article is licensed under the Creative Commons Attribution-ShareAlike 3.0 Unported License, which means that you can copy and modify it as long as the entire work (including additions) remains under this license.
This article is licensed under the Creative Commons Attribution-ShareAlike 3.0 Unported License, which means that you can copy and modify it as long as the entire work (including additions) remains under this license.
Surname
A surname or family name is a name added to a given name. In many cases, a surname is a family name and many dictionaries define "surname" as a synonym of "family name". In the western hemisphere, it is commonly synonymous with last name because it is usually placed at the end of a person's given name.
In most Spanish-speaking and Portuguese-speaking countries, two or more last names (or surnames) may be used. In China, Hungary, Japan, Korea, Madagascar, Taiwan, Vietnam, and parts of India, the family name is placed before a person's given name.
The style of having both a family name (surname) and a given name (forename) is far from universal. In many countries, it is common for ordinary people to have only one name or mononym.
The concept of a "surname" is a relatively recent historical development, evolving from a medieval naming practice called a "byname". Based on an individual's occupation or area of residence, a byname would be used in situations where more than one person had the same name.
This page contains text from Wikipedia, the Free Encyclopedia -
https://wn.com/Surname
This article is licensed under the Creative Commons Attribution-ShareAlike 3.0 Unported License, which means that you can copy and modify it as long as the entire work (including additions) remains under this license.
This article is licensed under the Creative Commons Attribution-ShareAlike 3.0 Unported License, which means that you can copy and modify it as long as the entire work (including additions) remains under this license.
Quantum mechanics
Quantum mechanics (QM; also known as quantum physics or quantum theory) including quantum field theory, is a fundamental branch of physics concerned with processes involving, for example, atoms and photons. In such processes, said to be quantized, the action has been observed to be only in integer multiples of the Planck constant, a physical quantity that is exceedingly, indeed perhaps ultimately, small. This is utterly inexplicable in classical physics.
Quantum mechanics gradually arose from Max Planck's solution in 1900 to the black-body radiation problem (reported 1859) and Albert Einstein's 1905 paper which offered a quantum-based theory to explain the photoelectric effect (reported 1887). Early quantum theory was profoundly reconceived in the mid-1920s.
The reconceived theory is formulated in various specially developed mathematical formalisms. In one of them, a mathematical function, the wave function, provides information about the probability amplitude of position, momentum, and other physical properties of a particle.
This page contains text from Wikipedia, the Free Encyclopedia -
https://wn.com/Quantum_mechanics
This article is licensed under the Creative Commons Attribution-ShareAlike 3.0 Unported License, which means that you can copy and modify it as long as the entire work (including additions) remains under this license.
This article is licensed under the Creative Commons Attribution-ShareAlike 3.0 Unported License, which means that you can copy and modify it as long as the entire work (including additions) remains under this license.
Khan Academy
Khan Academy is a non-profit educational organization created in 2006 by educator Salman Khan with the aim of providing a free, world-class education for anyone, anywhere. The organization produces short lectures in the form of YouTube videos. In addition to micro lectures, the organization's website features practice exercises and tools for educators. All resources are available for free to anyone around the world. The main language of the website is English, but the content is also available in other languages.
History
The founder of the organization, Salman Khan, was born in New Orleans, Louisiana, United States to immigrant parents from Bangladesh and India. After earning three degrees from the Massachusetts Institute of Technology (a BS in mathematics, a BS in electrical engineering and computer science, and an MEng in electrical engineering and computer science), he pursued an MBA from Harvard Business School.
In late 2004, Khan began tutoring his cousin Nadia who needed help with math using Yahoo!'s Doodle notepad.When other relatives and friends sought similar help, he decided that it would be more practical to distribute the tutorials on YouTube. The videos' popularity and the testimonials of appreciative students prompted Khan to quit his job in finance as a hedge fund analyst at Connective Capital Management in 2009, and focus on the tutorials (then released under the moniker "Khan Academy") full-time.
This page contains text from Wikipedia, the Free Encyclopedia -
https://wn.com/Khan_Academy
This article is licensed under the Creative Commons Attribution-ShareAlike 3.0 Unported License, which means that you can copy and modify it as long as the entire work (including additions) remains under this license.
This article is licensed under the Creative Commons Attribution-ShareAlike 3.0 Unported License, which means that you can copy and modify it as long as the entire work (including additions) remains under this license.
Paul
Paul may refer to:
People
Christianity
Roman and Byzantine empire
Royals
Other people
This page contains text from Wikipedia, the Free Encyclopedia -
https://wn.com/Paul
This article is licensed under the Creative Commons Attribution-ShareAlike 3.0 Unported License, which means that you can copy and modify it as long as the entire work (including additions) remains under this license.
This article is licensed under the Creative Commons Attribution-ShareAlike 3.0 Unported License, which means that you can copy and modify it as long as the entire work (including additions) remains under this license.
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20:34Paul Dirac Interview, Göttingen 1982
Paul Dirac Interview, Göttingen 1982Paul Dirac Interview, Göttingen 1982
Paul M. Dirac Speaking to F. Hund on Symmetry in Relativity, Quantum Mechanics and Physics of Elementary Particles. Filmed in Göttingen around 1982. Abstract of interview: Symmetry as central concept in theoretical physics. Space and time according to Lorentz-transformations. Matter and anti-matter. Dirac's definition of symmetry. Fermions. Negative energy levels. Einstein's general theory of relativity. Natural time and length. Cosmology and gravitation. Relative quantum mechanics. Atomic constants. -
59:59Dirac Lecture 1 (of 4) - Quantum Mechanics
Dirac Lecture 1 (of 4) - Quantum MechanicsDirac Lecture 1 (of 4) - Quantum Mechanics
1975 Christchurch - New Zealand. Dirac's comments here can be nicely joined with the words of Heisenberg at http://www.youtube.com/watch?v=ZqfTO4NTqJ4 . Thanks to ThoughtThinksYou.,,this too is well worth listening to. Branimir Vasilic has also kindly cleaned the sound and removed the 50 cycle hum. Big thanks - (I don't know how to do this!) See http://www.youtube.com/user/el3ktropionir/videos. I'm very sorry the quality is so poor - these movies were made from old spool video tapes when the first video recorders had just become available in New Zealand. (The magnetic coating brushes off the tape when touched.) I only posted these because no other better stuff like this has yet been offered to the public. I found these lectures after years of thinking I'd stupidly lost them. I was recently cleaning out the garage and there they were! I had to share them immediately just in case I die tomorrow and no-one else in the world could offer anything like these little treasures. Although these recordings are substandard, I hope someone out there may enjoy them as much as I have. These movies suffer from age so for this, again, I offer my sincere apologies. Dirac deserves much better than this. I teach school but not at this level. Here they are then for you smarter guys out there. Dirac can never be forgotten.... -
54:04Graham Farmelo on Paul Dirac and Mathematical Beauty
Graham Farmelo on Paul Dirac and Mathematical BeautyGraham Farmelo on Paul Dirac and Mathematical Beauty
Adjunct Professor of Physics at Northeastern University in Boston, Graham Farmelo, on Paul Dirac and the Religion of Mathematical Beauty. Apart from Einstein, Paul Dirac was probably the greatest theoretical physicist of the 20th century. Dirac, co-inventor of quantum mechanics, is now best known for conceiving of anti-matter and also for his deeply eccentric behavior. For him, the most important attribute of a fundamental theory was its mathematical beauty, an idea that he said was "almost a religion" to him. -
45:44Paul Dirac and the religion of mathematical beauty
Paul Dirac and the religion of mathematical beautyPaul Dirac and the religion of mathematical beauty
Speaker: Graham Farmelo Filmed at The Royal Society, London on Fri 04 Mar 2011 1pm - 2pm http://royalsociety.org/events/2011/paul-dirac/ -
17:06Quantum Mechanics 12a - Dirac Equation I
Quantum Mechanics 12a - Dirac Equation IQuantum Mechanics 12a - Dirac Equation I
When quantum mechanics and relativity are combined to describe the electron the result is the Dirac equation, presented in 1928. This equation predicts electron spin and the existence of anti-matter. -
19:21PAUL DIRAC. Parte 1: ¿Quién fue Paul Dirac?
PAUL DIRAC. Parte 1: ¿Quién fue Paul Dirac?PAUL DIRAC. Parte 1: ¿Quién fue Paul Dirac?
PDF: http://aula141.cat/wp-content/uploads/2015/10/Presentaci%C3%B3n_Dirac.pdf Resumen breve de la vida del físico Paul Dirac. Celebrado en el http://aula141.cat/category/videos/ A cargo de Javier García -
9:17Paul Dirac on Dimensionless Physical Constants and "Large Number Hypothesis"
Paul Dirac on Dimensionless Physical Constants and "Large Number Hypothesis"Paul Dirac on Dimensionless Physical Constants and "Large Number Hypothesis"
Paul Dirac was one of the most proficient theoretical physicists of the 20th century. In this interview, Dirac himself talks about the existence of dimensionless, fundamental constants in physics. These constants are numbers, usually ratios, which contain no units and are therefore universal. No matter what units you use, a dimensionless number will always be measured to be the same. The most widely known example, from mathematics, is Pi which is the ratio of the circumference of a circle to the diameter of the circle. No matter in what units you measure both the circumference and diameter of a circle, be it feet, meters or stadia, Pi will always be 3.14159265..... The fact that fundamental physics constants exist as dimensionless constants means that they can act as landmarks in a physical theory; if predictions are made by a theory that create a dimensionless constant of a given value and if that value is then confirmed by experiment then the theory is deemed acceptable in physics. An example of this is the lepton g-factor in physics, by which it is possible using Quantum Electrodynamics, to predict its value theoretically which matches experimental measurements to an accuracy of 1 part in a billion. This is the most accurate prediction in the history of mankind and demonstrates the predictive power of quantum mechanics, no matter how strange it is. Paul Dirac also seems to make reference to his famous and controversial "Large Number Hypothesis" here, which is not accepted by many theoretical physicists, stating that the similar sizes seen in some of fundamental physics constants is coincidental. It seems a crucial part in Dirac's thinking what there were no coincidences in physics and that theory should be able to explain why certain numbers are so large, independent of units, compared to others. In a way Dirac could be correct in certain aspects of this, as the observed range of the fundamental forces of nature, independent of units, are a result of the nature of the forces themselves are are not entirely coincidental. For example, the weak nuclear force is short ranged due to the Higg's mechanism and the Strong nuclear force is short ranged due to the property of Asymptotic Freedom in QCD, where the strong force screens itself at short distances, making it easy for the force to bind quarks and gluons, and strong at large distances making quarks difficult to break apart thus keeping them confined in protons and neutrons. The strength of the electromagnetic force is also dependent on the distance, as screening of the vacuum is diminished at extremely short distances making the electric charge infinitly large at singular points. These infinities led to the development of renormalization being developed to perform calculations in quantum field theory which was a procedure which Dirac disliked, possibly because it was a way to eliminate large numbers rather than explain their existence. Nevertheless, this method does work so there may in fact be no reason for why large numbers exist in physics, anymore than the reason for the infinite regress of decimal points seen in many mathematical constants, such as Pi or Euler's Constant. His dislike of renormalization, developed by Feynman and others to reconcile theory and experiment, and his pursuit of the Large Number Hypothesis meant that Dirac was also a controversial figure in the physics community, sometimes viewing pure theory as being superior to experimental verification. Paul Adrian Maurice Dirac was one of the founders of quantum theory and reconciled quantum mechanics with Einstein's theory of special relativity in the equation which bears his name, the Dirac Equation. Using this equation, Dirac predicted the existence of antimatter by finding that for his equation to work, charged quanta as described by relativity must be roots of the square root of the normalized charge of a particle, hence forming positive and negative terms. From the relativistic terms in his equation Dirac also described the existence of quantum spin as a relativistic phenomenon and described the existence of fermions, by a reinterpretation of Dirac's equation as a "classical" field equation for any point particle of spin ħ/2, itself subject to quantisation conditions involving anti-commutators. Werner Heisenberg later interpreted the equation as a quantum field equation accurately describing all elementary matter particles -- today quarks and leptons -- this Dirac field equation is as central to theoretical physics as the Maxwell, Yang--Mills and Einstein field equations. Dirac is regarded as the founder of quantum electrodynamics, being the first to use that term. He also introduced the idea of vacuum polarisation in the early 1930s. This work was key to the development of quantum mechanics by the next generation of theorists, and in particular Schwinger, Feynman, Sin-Itiro Tomonaga and Freeman Dyson in their formulation of quantum electrodynamics. -
1:05:56Quantum Mechanics Concepts: 1 Dirac Notation and Photon Polarisation
Quantum Mechanics Concepts: 1 Dirac Notation and Photon PolarisationQuantum Mechanics Concepts: 1 Dirac Notation and Photon Polarisation
Part 1 of a series: covering Dirac Notation, the measurable Hermitian matrix, the eigenvector states and the eigenvalue measured outcomes and application to photon polarisation -
44:11PAUL DIRAC. Parte 2: ¿Cómo llegó Dirac a su ecuación?
PAUL DIRAC. Parte 2: ¿Cómo llegó Dirac a su ecuación?PAUL DIRAC. Parte 2: ¿Cómo llegó Dirac a su ecuación?
PDF: http://aula141.cat/wp-content/uploads/2015/10/Presentaci%C3%B3n_Dirac.pdf Trato de explicar con matemáticas sencillas la esencia básica de la ecuación de Dirac. En esta ecuación está escondido el origen de la antimateria. Conferencia celebrada en http://aula141.cat/category/videos/ A cargo de Javier García. -
17:48Dirac delta function | Laplace transform | Differential Equations | Khan Academy
Dirac delta function | Laplace transform | Differential Equations | Khan AcademyDirac delta function | Laplace transform | Differential Equations | Khan Academy
Introduction to the Dirac Delta Function Watch the next lesson: https://www.khanacademy.org/math/differential-equations/laplace-transform/properties-of-laplace-transform/v/laplace-transform-of-the-dirac-delta-function?utm_source=YT&utm;_medium=Desc&utm;_campaign=DifferentialEquations Missed the previous lesson? https://www.khanacademy.org/math/differential-equations/laplace-transform/properties-of-laplace-transform/v/inverse-laplace-examples?utm_source=YT&utm;_medium=Desc&utm;_campaign=DifferentialEquations Differential Equations on Khan Academy: Differential equations, separable equations, exact equations, integrating factors, homogeneous equations. About Khan Academy: Khan Academy offers practice exercises, instructional videos, and a personalized learning dashboard that empower learners to study at their own pace in and outside of the classroom. We tackle math, science, computer programming, history, art history, economics, and more. Our math missions guide learners from kindergarten to calculus using state-of-the-art, adaptive technology that identifies strengths and learning gaps. We've also partnered with institutions like NASA, The Museum of Modern Art, The California Academy of Sciences, and MIT to offer specialized content. For free. For everyone. Forever. #YouCanLearnAnything Subscribe to KhanAcademy’s Differential Equations channel:: https://www.youtube.com/channel/UCxSQHGkaDv8UKXE0TUbsOIg?sub_confirmation=1 Subscribe to KhanAcademy: https://www.youtube.com/subscription_center?add_user=khanacademy -
4:00Legendary Physicist and Florida State Professor Paul Dirac
Legendary Physicist and Florida State Professor Paul Dirac -
7:17[야매 Review] 소니캐스트 디락(DIRAC) 개봉기, 청음기
[야매 Review] 소니캐스트 디락(DIRAC) 개봉기, 청음기[야매 Review] 소니캐스트 디락(DIRAC) 개봉기, 청음기
각종 커뮤니티를 가성비 최강이라는 입소문과 함께 뜨겁게 달구고 있는 바로 그 이어폰 소니캐스트 DIRAC! 벌써 6차 판매까지 완판 되었어요! 사실 제가 비싼 이어폰을 써본적은 별로 없기에 어느정도로 좋은지는 잘 모르겠습니다만, 살면서 써본 이어폰 중에는 가장 좋은것 같습니다......아마도??? -
59:59Dirac Lecture (1/4) - Quantum Mechanics
Dirac Lecture (1/4) - Quantum MechanicsDirac Lecture (1/4) - Quantum Mechanics
Paul Dirac Lecture in Christchurch, New Zealand in 1975. I actually took this from Richard Smythe´s channel and cleaned up the audio which was really bad. Mr Dirac deserves better. -
13:10R. P. Feynman: Elementary Particles and the Laws of Physics (1986 Dirac memorial lecture) I
R. P. Feynman: Elementary Particles and the Laws of Physics (1986 Dirac memorial lecture) IR. P. Feynman: Elementary Particles and the Laws of Physics (1986 Dirac memorial lecture) I
Richard Feynman was Richard Chace Tolman Professor of Theoretical Physics at CALTECH -
3:18Einstein, Dirac, Godel, Selberg, Harish-Chandra in Princeton.
Einstein, Dirac, Godel, Selberg, Harish-Chandra in Princeton. -
2:19What is DIRAC EQUATION? What does DIRAC EQUATION mean? DIRAC EQUATION meaning & explanation
What is DIRAC EQUATION? What does DIRAC EQUATION mean? DIRAC EQUATION meaning & explanationWhat is DIRAC EQUATION? What does DIRAC EQUATION mean? DIRAC EQUATION meaning & explanation
What is DIRAC EQUATION? What does DIRAC EQUATION mean? DIRAC EQUATION meaning & explanation. Source: Wikipedia.org article, adapted under https://creativecommons.org/licenses/by-sa/3.0/ license. In particle physics, the Dirac equation is a relativistic wave equation derived by British physicist Paul Dirac in 1928. In its free form, or including electromagnetic interactions, it describes all spin-1/2 massive particles such as electrons and quarks, for which parity is a symmetry, and is consistent with both the principles of quantum mechanics and the theory of special relativity, and was the first theory to account fully for special relativity in the context of quantum mechanics. It accounted for the fine details of the hydrogen spectrum in a completely rigorous way. The equation also implied the existence of a new form of matter, antimatter, previously unsuspected and unobserved and which was experimentally confirmed several years later. It also provided a theoretical justification for the introduction of several component wave functions in Pauli's phenomenological theory of spin; the wave functions in the Dirac theory are vectors of four complex numbers (known as bispinors), two of which resemble the Pauli wavefunction in the non-relativistic limit, in contrast to the Schrödinger equation which described wave functions of only one complex value. Moreover, in the limit of zero mass, the Dirac equation reduces to the Weyl equation. Although Dirac did not at first fully appreciate the importance of his results, the entailed explanation of spin as a consequence of the union of quantum mechanics and relativity—and the eventual discovery of the positron—represents one of the great triumphs of theoretical physics. This accomplishment has been described as fully on a par with the works of Newton, Maxwell, and Einstein before him. In the context of quantum field theory, the Dirac equation is reinterpreted to describe quantum fields corresponding to spin-1/2 particles. -
1:40Top 9 Paul Dirac Quotes - The English theoretical physicist
Top 9 Paul Dirac Quotes - The English theoretical physicistTop 9 Paul Dirac Quotes - The English theoretical physicist
Top 9 Paul Dirac Quotes - The English theoretical physicist -
20:183.1b. HIGGS - Dirac's Equation
3.1b. HIGGS - Dirac's Equation3.1b. HIGGS - Dirac's Equation
Week three of the University of Edinburgh's "Discovery of the Higgs Boson" (HIGGS) open online course. Prof Richard Ball School of Physics and Astronomy University of Edinburgh Licence: CC-BY-NC http://creativecommons.org/licenses/by-nc-sa/3.0/ -
48:44Geniusze kwantów: Planck, Einstein, Bohr, Dirac, Schrödinger – Wojciech Grygiel
Geniusze kwantów: Planck, Einstein, Bohr, Dirac, Schrödinger – Wojciech GrygielGeniusze kwantów: Planck, Einstein, Bohr, Dirac, Schrödinger – Wojciech Grygiel
Można powiedzieć, że w dziejach mechaniki kwantowej geniusz ukazał się w pełnej krasie. Bez kilku wyraźnych przebłysków geniuszu ta teoria nie ruszyłaby do przodu. Niniejszy wkład z serii "Granice Nauki: genialni uczeni - genialne teorie" dotyczy "geniuszy kwantów" - Maxa Plancka, Alberta Einsteina, Nielsa Bohra, Paula Diraca oraz Erwina Schrödingera. -
5:44AIDARUS MALIBOI | DIRAC | "(Official Video)" 2017
AIDARUS MALIBOI | DIRAC | "(Official Video)" 2017AIDARUS MALIBOI | DIRAC | "(Official Video)" 2017
Dirac
developed with YouTube
-
Paul Dirac Interview, Göttingen 1982
Paul M. Dirac Speaking to F. Hund on Symmetry in Relativity, Quantum Mechanics and Physics of Elementary Particles. Filmed in Göttingen around 1982. Abstract of interview: Symmetry as central concept in theoretical physics. Space and time according to Lorentz-transformations. Matter and anti-matter. Dirac's definition of symmetry. Fermions. Negative energy levels. Einstein's general theory of relativity. Natural time and length. Cosmology and gravitation. Relative quantum mechanics. Atomic constants.
published: 19 Jun 2017 -
Dirac Lecture 1 (of 4) - Quantum Mechanics
1975 Christchurch - New Zealand. Dirac's comments here can be nicely joined with the words of Heisenberg at http://www.youtube.com/watch?v=ZqfTO4NTqJ4 . Thanks to ThoughtThinksYou.,,this too is well worth listening to. Branimir Vasilic has also kindly cleaned the sound and removed the 50 cycle hum. Big thanks - (I don't know how to do this!) See http://www.youtube.com/user/el3ktropionir/videos. I'm very sorry the quality is so poor - these movies were made from old spool video tapes when the first video recorders had just become available in New Zealand. (The magnetic coating brushes off the tape when touched.) I only posted these because no other better stuff like this has yet been offered to the public. I found these lectures after years of thinking I'd stupidly lost them. I was recen...
published: 28 Jan 2013 -
Graham Farmelo on Paul Dirac and Mathematical Beauty
Adjunct Professor of Physics at Northeastern University in Boston, Graham Farmelo, on Paul Dirac and the Religion of Mathematical Beauty. Apart from Einstein, Paul Dirac was probably the greatest theoretical physicist of the 20th century. Dirac, co-inventor of quantum mechanics, is now best known for conceiving of anti-matter and also for his deeply eccentric behavior. For him, the most important attribute of a fundamental theory was its mathematical beauty, an idea that he said was "almost a religion" to him.
published: 02 Mar 2012 -
Paul Dirac and the religion of mathematical beauty
Speaker: Graham Farmelo Filmed at The Royal Society, London on Fri 04 Mar 2011 1pm - 2pm http://royalsociety.org/events/2011/paul-dirac/
published: 10 Dec 2013 -
Quantum Mechanics 12a - Dirac Equation I
When quantum mechanics and relativity are combined to describe the electron the result is the Dirac equation, presented in 1928. This equation predicts electron spin and the existence of anti-matter.
published: 19 Dec 2015 -
PAUL DIRAC. Parte 1: ¿Quién fue Paul Dirac?
PDF: http://aula141.cat/wp-content/uploads/2015/10/Presentaci%C3%B3n_Dirac.pdf Resumen breve de la vida del físico Paul Dirac. Celebrado en el http://aula141.cat/category/videos/ A cargo de Javier García
published: 16 Oct 2015 -
Paul Dirac on Dimensionless Physical Constants and "Large Number Hypothesis"
Paul Dirac was one of the most proficient theoretical physicists of the 20th century. In this interview, Dirac himself talks about the existence of dimensionless, fundamental constants in physics. These constants are numbers, usually ratios, which contain no units and are therefore universal. No matter what units you use, a dimensionless number will always be measured to be the same. The most widely known example, from mathematics, is Pi which is the ratio of the circumference of a circle to the diameter of the circle. No matter in what units you measure both the circumference and diameter of a circle, be it feet, meters or stadia, Pi will always be 3.14159265..... The fact that fundamental physics constants exist as dimensionless constants means that they can act as landmarks in a physica...
published: 22 Nov 2013 -
Quantum Mechanics Concepts: 1 Dirac Notation and Photon Polarisation
Part 1 of a series: covering Dirac Notation, the measurable Hermitian matrix, the eigenvector states and the eigenvalue measured outcomes and application to photon polarisation
published: 20 Aug 2013 -
PAUL DIRAC. Parte 2: ¿Cómo llegó Dirac a su ecuación?
PDF: http://aula141.cat/wp-content/uploads/2015/10/Presentaci%C3%B3n_Dirac.pdf Trato de explicar con matemáticas sencillas la esencia básica de la ecuación de Dirac. En esta ecuación está escondido el origen de la antimateria. Conferencia celebrada en http://aula141.cat/category/videos/ A cargo de Javier García.
published: 16 Oct 2015 -
Dirac delta function | Laplace transform | Differential Equations | Khan Academy
Introduction to the Dirac Delta Function Watch the next lesson: https://www.khanacademy.org/math/differential-equations/laplace-transform/properties-of-laplace-transform/v/laplace-transform-of-the-dirac-delta-function?utm_source=YT&utm;_medium=Desc&utm;_campaign=DifferentialEquations Missed the previous lesson? https://www.khanacademy.org/math/differential-equations/laplace-transform/properties-of-laplace-transform/v/inverse-laplace-examples?utm_source=YT&utm;_medium=Desc&utm;_campaign=DifferentialEquations Differential Equations on Khan Academy: Differential equations, separable equations, exact equations, integrating factors, homogeneous equations. About Khan Academy: Khan Academy offers practice exercises, instructional videos, and a personalized learning dashboard that empower learner...
published: 07 Oct 2009 -
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[야매 Review] 소니캐스트 디락(DIRAC) 개봉기, 청음기
각종 커뮤니티를 가성비 최강이라는 입소문과 함께 뜨겁게 달구고 있는 바로 그 이어폰 소니캐스트 DIRAC! 벌써 6차 판매까지 완판 되었어요! 사실 제가 비싼 이어폰을 써본적은 별로 없기에 어느정도로 좋은지는 잘 모르겠습니다만, 살면서 써본 이어폰 중에는 가장 좋은것 같습니다......아마도???
published: 20 Aug 2017 -
Dirac Lecture (1/4) - Quantum Mechanics
Paul Dirac Lecture in Christchurch, New Zealand in 1975. I actually took this from Richard Smythe´s channel and cleaned up the audio which was really bad. Mr Dirac deserves better.
published: 15 Jun 2014 -
R. P. Feynman: Elementary Particles and the Laws of Physics (1986 Dirac memorial lecture) I
Richard Feynman was Richard Chace Tolman Professor of Theoretical Physics at CALTECH
published: 06 Jan 2011 -
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What is DIRAC EQUATION? What does DIRAC EQUATION mean? DIRAC EQUATION meaning & explanation
What is DIRAC EQUATION? What does DIRAC EQUATION mean? DIRAC EQUATION meaning & explanation. Source: Wikipedia.org article, adapted under https://creativecommons.org/licenses/by-sa/3.0/ license. In particle physics, the Dirac equation is a relativistic wave equation derived by British physicist Paul Dirac in 1928. In its free form, or including electromagnetic interactions, it describes all spin-1/2 massive particles such as electrons and quarks, for which parity is a symmetry, and is consistent with both the principles of quantum mechanics and the theory of special relativity, and was the first theory to account fully for special relativity in the context of quantum mechanics. It accounted for the fine details of the hydrogen spectrum in a completely rigorous way. The equation also imp...
published: 25 Oct 2016 -
Top 9 Paul Dirac Quotes - The English theoretical physicist
Top 9 Paul Dirac Quotes - The English theoretical physicist
published: 19 Feb 2016 -
3.1b. HIGGS - Dirac's Equation
Week three of the University of Edinburgh's "Discovery of the Higgs Boson" (HIGGS) open online course. Prof Richard Ball School of Physics and Astronomy University of Edinburgh Licence: CC-BY-NC http://creativecommons.org/licenses/by-nc-sa/3.0/
published: 27 Feb 2014 -
Geniusze kwantów: Planck, Einstein, Bohr, Dirac, Schrödinger – Wojciech Grygiel
Można powiedzieć, że w dziejach mechaniki kwantowej geniusz ukazał się w pełnej krasie. Bez kilku wyraźnych przebłysków geniuszu ta teoria nie ruszyłaby do przodu. Niniejszy wkład z serii "Granice Nauki: genialni uczeni - genialne teorie" dotyczy "geniuszy kwantów" - Maxa Plancka, Alberta Einsteina, Nielsa Bohra, Paula Diraca oraz Erwina Schrödingera.
published: 18 Nov 2015 -
AIDARUS MALIBOI | DIRAC | "(Official Video)" 2017
published: 30 Jun 2017
developed with YouTube
Paul Dirac Interview, Göttingen 1982
- Order: Reorder
- Duration: 20:34
- Updated: 19 Jun 2017
- views: 24035
Paul M. Dirac Speaking to F. Hund on Symmetry in Relativity, Quantum Mechanics and Physics of Elementary Particles.
Filmed in Göttingen around 1982.
Abstract ...
Paul M. Dirac Speaking to F. Hund on Symmetry in Relativity, Quantum Mechanics and Physics of Elementary Particles.
Filmed in Göttingen around 1982.
Abstract of interview:
Symmetry as central concept in theoretical physics. Space and time according to Lorentz-transformations. Matter and anti-matter. Dirac's definition of symmetry. Fermions. Negative energy levels. Einstein's general theory of relativity. Natural time and length. Cosmology and gravitation. Relative quantum mechanics. Atomic constants.
https://wn.com/Paul_Dirac_Interview,_Göttingen_1982
Paul M. Dirac Speaking to F. Hund on Symmetry in Relativity, Quantum Mechanics and Physics of Elementary Particles.
Filmed in Göttingen around 1982.
Abstract of interview:
Symmetry as central concept in theoretical physics. Space and time according to Lorentz-transformations. Matter and anti-matter. Dirac's definition of symmetry. Fermions. Negative energy levels. Einstein's general theory of relativity. Natural time and length. Cosmology and gravitation. Relative quantum mechanics. Atomic constants.
- published: 19 Jun 2017
- views: 24035
Dirac Lecture 1 (of 4) - Quantum Mechanics
- Order: Reorder
- Duration: 59:59
- Updated: 28 Jan 2013
- views: 181652
1975 Christchurch - New Zealand. Dirac's comments here can be nicely joined with the words of Heisenberg at http://www.youtube.com/watch?v=ZqfTO4NTqJ4 . Thanks ...
1975 Christchurch - New Zealand. Dirac's comments here can be nicely joined with the words of Heisenberg at http://www.youtube.com/watch?v=ZqfTO4NTqJ4 . Thanks to ThoughtThinksYou.,,this too is well worth listening to.
Branimir Vasilic has also kindly cleaned the sound and removed the 50 cycle hum. Big thanks - (I don't know how to do this!) See http://www.youtube.com/user/el3ktropionir/videos.
I'm very sorry the quality is so poor - these movies were made from old spool video tapes when the first video recorders had just become available in New Zealand. (The magnetic coating brushes off the tape when touched.) I only posted these because no other better stuff like this has yet been offered to the public. I found these lectures after years of thinking I'd stupidly lost them. I was recently cleaning out the garage and there they were! I had to share them immediately just in case I die tomorrow and no-one else in the world could offer anything like these little treasures. Although these recordings are substandard, I hope someone out there may enjoy them as much as I have. These movies suffer from age so for this, again, I offer my sincere apologies. Dirac deserves much better than this. I teach school but not at this level. Here they are then for you smarter guys out there. Dirac can never be forgotten....
https://wn.com/Dirac_Lecture_1_(Of_4)_Quantum_Mechanics
1975 Christchurch - New Zealand. Dirac's comments here can be nicely joined with the words of Heisenberg at http://www.youtube.com/watch?v=ZqfTO4NTqJ4 . Thanks to ThoughtThinksYou.,,this too is well worth listening to.
Branimir Vasilic has also kindly cleaned the sound and removed the 50 cycle hum. Big thanks - (I don't know how to do this!) See http://www.youtube.com/user/el3ktropionir/videos.
I'm very sorry the quality is so poor - these movies were made from old spool video tapes when the first video recorders had just become available in New Zealand. (The magnetic coating brushes off the tape when touched.) I only posted these because no other better stuff like this has yet been offered to the public. I found these lectures after years of thinking I'd stupidly lost them. I was recently cleaning out the garage and there they were! I had to share them immediately just in case I die tomorrow and no-one else in the world could offer anything like these little treasures. Although these recordings are substandard, I hope someone out there may enjoy them as much as I have. These movies suffer from age so for this, again, I offer my sincere apologies. Dirac deserves much better than this. I teach school but not at this level. Here they are then for you smarter guys out there. Dirac can never be forgotten....
- published: 28 Jan 2013
- views: 181652
Graham Farmelo on Paul Dirac and Mathematical Beauty
- Order: Reorder
- Duration: 54:04
- Updated: 02 Mar 2012
- views: 111006
Adjunct Professor of Physics at Northeastern University in Boston, Graham Farmelo, on Paul Dirac and the Religion of Mathematical Beauty. Apart from Einstein, P...
Adjunct Professor of Physics at Northeastern University in Boston, Graham Farmelo, on Paul Dirac and the Religion of Mathematical Beauty. Apart from Einstein, Paul Dirac was probably the greatest theoretical physicist of the 20th century. Dirac, co-inventor of quantum mechanics, is now best known for conceiving of anti-matter and also for his deeply eccentric behavior. For him, the most important attribute of a fundamental theory was its mathematical beauty, an idea that he said was "almost a religion" to him.
https://wn.com/Graham_Farmelo_On_Paul_Dirac_And_Mathematical_Beauty
Adjunct Professor of Physics at Northeastern University in Boston, Graham Farmelo, on Paul Dirac and the Religion of Mathematical Beauty. Apart from Einstein, Paul Dirac was probably the greatest theoretical physicist of the 20th century. Dirac, co-inventor of quantum mechanics, is now best known for conceiving of anti-matter and also for his deeply eccentric behavior. For him, the most important attribute of a fundamental theory was its mathematical beauty, an idea that he said was "almost a religion" to him.
- published: 02 Mar 2012
- views: 111006
Paul Dirac and the religion of mathematical beauty
- Order: Reorder
- Duration: 45:44
- Updated: 10 Dec 2013
- views: 86043
Speaker: Graham Farmelo
Filmed at The Royal Society, London on Fri 04 Mar 2011 1pm - 2pm
http://royalsociety.org/events/2011/paul-dirac/
Speaker: Graham Farmelo
Filmed at The Royal Society, London on Fri 04 Mar 2011 1pm - 2pm
http://royalsociety.org/events/2011/paul-dirac/
https://wn.com/Paul_Dirac_And_The_Religion_Of_Mathematical_Beauty
Speaker: Graham Farmelo
Filmed at The Royal Society, London on Fri 04 Mar 2011 1pm - 2pm
http://royalsociety.org/events/2011/paul-dirac/
- published: 10 Dec 2013
- views: 86043
Quantum Mechanics 12a - Dirac Equation I
- Order: Reorder
- Duration: 17:06
- Updated: 19 Dec 2015
- views: 23307
When quantum mechanics and relativity are combined to describe the electron the result is the Dirac equation, presented in 1928. This equation predicts electron...
When quantum mechanics and relativity are combined to describe the electron the result is the Dirac equation, presented in 1928. This equation predicts electron spin and the existence of anti-matter.
https://wn.com/Quantum_Mechanics_12A_Dirac_Equation_I
When quantum mechanics and relativity are combined to describe the electron the result is the Dirac equation, presented in 1928. This equation predicts electron spin and the existence of anti-matter.
- published: 19 Dec 2015
- views: 23307
PAUL DIRAC. Parte 1: ¿Quién fue Paul Dirac?
- Order: Reorder
- Duration: 19:21
- Updated: 16 Oct 2015
- views: 36000
PDF: http://aula141.cat/wp-content/uploads/2015/10/Presentaci%C3%B3n_Dirac.pdf
Resumen breve de la vida del físico Paul Dirac.
Celebrado en el http://aula141.c...
PDF: http://aula141.cat/wp-content/uploads/2015/10/Presentaci%C3%B3n_Dirac.pdf
Resumen breve de la vida del físico Paul Dirac.
Celebrado en el http://aula141.cat/category/videos/
A cargo de Javier García
https://wn.com/Paul_Dirac._Parte_1_¿Quién_Fue_Paul_Dirac
PDF: http://aula141.cat/wp-content/uploads/2015/10/Presentaci%C3%B3n_Dirac.pdf
Resumen breve de la vida del físico Paul Dirac.
Celebrado en el http://aula141.cat/category/videos/
A cargo de Javier García
- published: 16 Oct 2015
- views: 36000
Paul Dirac on Dimensionless Physical Constants and "Large Number Hypothesis"
- Order: Reorder
- Duration: 9:17
- Updated: 22 Nov 2013
- views: 83257
Paul Dirac was one of the most proficient theoretical physicists of the 20th century. In this interview, Dirac himself talks about the existence of dimensionles...
Paul Dirac was one of the most proficient theoretical physicists of the 20th century. In this interview, Dirac himself talks about the existence of dimensionless, fundamental constants in physics. These constants are numbers, usually ratios, which contain no units and are therefore universal. No matter what units you use, a dimensionless number will always be measured to be the same. The most widely known example, from mathematics, is Pi which is the ratio of the circumference of a circle to the diameter of the circle. No matter in what units you measure both the circumference and diameter of a circle, be it feet, meters or stadia, Pi will always be 3.14159265.....
The fact that fundamental physics constants exist as dimensionless constants means that they can act as landmarks in a physical theory; if predictions are made by a theory that create a dimensionless constant of a given value and if that value is then confirmed by experiment then the theory is deemed acceptable in physics. An example of this is the lepton g-factor in physics, by which it is possible using Quantum Electrodynamics, to predict its value theoretically which matches experimental measurements to an accuracy of 1 part in a billion. This is the most accurate prediction in the history of mankind and demonstrates the predictive power of quantum mechanics, no matter how strange it is.
Paul Dirac also seems to make reference to his famous and controversial "Large Number Hypothesis" here, which is not accepted by many theoretical physicists, stating that the similar sizes seen in some of fundamental physics constants is coincidental. It seems a crucial part in Dirac's thinking what there were no coincidences in physics and that theory should be able to explain why certain numbers are so large, independent of units, compared to others.
In a way Dirac could be correct in certain aspects of this, as the observed range of the fundamental forces of nature, independent of units, are a result of the nature of the forces themselves are are not entirely coincidental. For example, the weak nuclear force is short ranged due to the Higg's mechanism and the Strong nuclear force is short ranged due to the property of Asymptotic Freedom in QCD, where the strong force screens itself at short distances, making it easy for the force to bind quarks and gluons, and strong at large distances making quarks difficult to break apart thus keeping them confined in protons and neutrons. The strength of the electromagnetic force is also dependent on the distance, as screening of the vacuum is diminished at extremely short distances making the electric charge infinitly large at singular points. These infinities led to the development of renormalization being developed to perform calculations in quantum field theory which was a procedure which Dirac disliked, possibly because it was a way to eliminate large numbers rather than explain their existence. Nevertheless, this method does work so there may in fact be no reason for why large numbers exist in physics, anymore than the reason for the infinite regress of decimal points seen in many mathematical constants, such as Pi or Euler's Constant.
His dislike of renormalization, developed by Feynman and others to reconcile theory and experiment, and his pursuit of the Large Number Hypothesis meant that Dirac was also a controversial figure in the physics community, sometimes viewing pure theory as being superior to experimental verification.
Paul Adrian Maurice Dirac was one of the founders of quantum theory and reconciled quantum mechanics with Einstein's theory of special relativity in the equation which bears his name, the Dirac Equation.
Using this equation, Dirac predicted the existence of antimatter by finding that for his equation to work, charged quanta as described by relativity must be roots of the square root of the normalized charge of a particle, hence forming positive and negative terms.
From the relativistic terms in his equation Dirac also described the existence of quantum spin as a relativistic phenomenon and described the existence of fermions, by a reinterpretation of Dirac's equation as a "classical" field equation for any point particle of spin ħ/2, itself subject to quantisation conditions involving anti-commutators.
Werner Heisenberg later interpreted the equation as a quantum field equation accurately describing all elementary matter particles -- today quarks and leptons -- this Dirac field equation is as central to theoretical physics as the Maxwell, Yang--Mills and Einstein field equations. Dirac is regarded as the founder of quantum electrodynamics, being the first to use that term. He also introduced the idea of vacuum polarisation in the early 1930s. This work was key to the development of quantum mechanics by the next generation of theorists, and in particular Schwinger, Feynman, Sin-Itiro Tomonaga and Freeman Dyson in their formulation of quantum electrodynamics.
https://wn.com/Paul_Dirac_On_Dimensionless_Physical_Constants_And_Large_Number_Hypothesis
Paul Dirac was one of the most proficient theoretical physicists of the 20th century. In this interview, Dirac himself talks about the existence of dimensionless, fundamental constants in physics. These constants are numbers, usually ratios, which contain no units and are therefore universal. No matter what units you use, a dimensionless number will always be measured to be the same. The most widely known example, from mathematics, is Pi which is the ratio of the circumference of a circle to the diameter of the circle. No matter in what units you measure both the circumference and diameter of a circle, be it feet, meters or stadia, Pi will always be 3.14159265.....
The fact that fundamental physics constants exist as dimensionless constants means that they can act as landmarks in a physical theory; if predictions are made by a theory that create a dimensionless constant of a given value and if that value is then confirmed by experiment then the theory is deemed acceptable in physics. An example of this is the lepton g-factor in physics, by which it is possible using Quantum Electrodynamics, to predict its value theoretically which matches experimental measurements to an accuracy of 1 part in a billion. This is the most accurate prediction in the history of mankind and demonstrates the predictive power of quantum mechanics, no matter how strange it is.
Paul Dirac also seems to make reference to his famous and controversial "Large Number Hypothesis" here, which is not accepted by many theoretical physicists, stating that the similar sizes seen in some of fundamental physics constants is coincidental. It seems a crucial part in Dirac's thinking what there were no coincidences in physics and that theory should be able to explain why certain numbers are so large, independent of units, compared to others.
In a way Dirac could be correct in certain aspects of this, as the observed range of the fundamental forces of nature, independent of units, are a result of the nature of the forces themselves are are not entirely coincidental. For example, the weak nuclear force is short ranged due to the Higg's mechanism and the Strong nuclear force is short ranged due to the property of Asymptotic Freedom in QCD, where the strong force screens itself at short distances, making it easy for the force to bind quarks and gluons, and strong at large distances making quarks difficult to break apart thus keeping them confined in protons and neutrons. The strength of the electromagnetic force is also dependent on the distance, as screening of the vacuum is diminished at extremely short distances making the electric charge infinitly large at singular points. These infinities led to the development of renormalization being developed to perform calculations in quantum field theory which was a procedure which Dirac disliked, possibly because it was a way to eliminate large numbers rather than explain their existence. Nevertheless, this method does work so there may in fact be no reason for why large numbers exist in physics, anymore than the reason for the infinite regress of decimal points seen in many mathematical constants, such as Pi or Euler's Constant.
His dislike of renormalization, developed by Feynman and others to reconcile theory and experiment, and his pursuit of the Large Number Hypothesis meant that Dirac was also a controversial figure in the physics community, sometimes viewing pure theory as being superior to experimental verification.
Paul Adrian Maurice Dirac was one of the founders of quantum theory and reconciled quantum mechanics with Einstein's theory of special relativity in the equation which bears his name, the Dirac Equation.
Using this equation, Dirac predicted the existence of antimatter by finding that for his equation to work, charged quanta as described by relativity must be roots of the square root of the normalized charge of a particle, hence forming positive and negative terms.
From the relativistic terms in his equation Dirac also described the existence of quantum spin as a relativistic phenomenon and described the existence of fermions, by a reinterpretation of Dirac's equation as a "classical" field equation for any point particle of spin ħ/2, itself subject to quantisation conditions involving anti-commutators.
Werner Heisenberg later interpreted the equation as a quantum field equation accurately describing all elementary matter particles -- today quarks and leptons -- this Dirac field equation is as central to theoretical physics as the Maxwell, Yang--Mills and Einstein field equations. Dirac is regarded as the founder of quantum electrodynamics, being the first to use that term. He also introduced the idea of vacuum polarisation in the early 1930s. This work was key to the development of quantum mechanics by the next generation of theorists, and in particular Schwinger, Feynman, Sin-Itiro Tomonaga and Freeman Dyson in their formulation of quantum electrodynamics.
- published: 22 Nov 2013
- views: 83257
Quantum Mechanics Concepts: 1 Dirac Notation and Photon Polarisation
- Order: Reorder
- Duration: 1:05:56
- Updated: 20 Aug 2013
- views: 266932
Part 1 of a series: covering Dirac Notation, the measurable Hermitian matrix, the eigenvector states and the eigenvalue measured outcomes and application to pho...
Part 1 of a series: covering Dirac Notation, the measurable Hermitian matrix, the eigenvector states and the eigenvalue measured outcomes and application to photon polarisation
https://wn.com/Quantum_Mechanics_Concepts_1_Dirac_Notation_And_Photon_Polarisation
Part 1 of a series: covering Dirac Notation, the measurable Hermitian matrix, the eigenvector states and the eigenvalue measured outcomes and application to photon polarisation
- published: 20 Aug 2013
- views: 266932
PAUL DIRAC. Parte 2: ¿Cómo llegó Dirac a su ecuación?
- Order: Reorder
- Duration: 44:11
- Updated: 16 Oct 2015
- views: 54126
PDF: http://aula141.cat/wp-content/uploads/2015/10/Presentaci%C3%B3n_Dirac.pdf
Trato de explicar con matemáticas sencillas la esencia básica de la ecuación de ...
PDF: http://aula141.cat/wp-content/uploads/2015/10/Presentaci%C3%B3n_Dirac.pdf
Trato de explicar con matemáticas sencillas la esencia básica de la ecuación de Dirac. En esta ecuación está escondido el origen de la antimateria.
Conferencia celebrada en http://aula141.cat/category/videos/
A cargo de Javier García.
https://wn.com/Paul_Dirac._Parte_2_¿Cómo_Llegó_Dirac_A_Su_Ecuación
PDF: http://aula141.cat/wp-content/uploads/2015/10/Presentaci%C3%B3n_Dirac.pdf
Trato de explicar con matemáticas sencillas la esencia básica de la ecuación de Dirac. En esta ecuación está escondido el origen de la antimateria.
Conferencia celebrada en http://aula141.cat/category/videos/
A cargo de Javier García.
- published: 16 Oct 2015
- views: 54126
Dirac delta function | Laplace transform | Differential Equations | Khan Academy
- Order: Reorder
- Duration: 17:48
- Updated: 07 Oct 2009
- views: 320693
Introduction to the Dirac Delta Function
Watch the next lesson: https://www.khanacademy.org/math/differential-equations/laplace-transform/properties-of-laplace...
Introduction to the Dirac Delta Function
Watch the next lesson: https://www.khanacademy.org/math/differential-equations/laplace-transform/properties-of-laplace-transform/v/laplace-transform-of-the-dirac-delta-function?utm_source=YT&utm;_medium=Desc&utm;_campaign=DifferentialEquations
Missed the previous lesson?
https://www.khanacademy.org/math/differential-equations/laplace-transform/properties-of-laplace-transform/v/inverse-laplace-examples?utm_source=YT&utm;_medium=Desc&utm;_campaign=DifferentialEquations
Differential Equations on Khan Academy: Differential equations, separable equations, exact equations, integrating factors, homogeneous equations.
About Khan Academy: Khan Academy offers practice exercises, instructional videos, and a personalized learning dashboard that empower learners to study at their own pace in and outside of the classroom. We tackle math, science, computer programming, history, art history, economics, and more. Our math missions guide learners from kindergarten to calculus using state-of-the-art, adaptive technology that identifies strengths and learning gaps. We've also partnered with institutions like NASA, The Museum of Modern Art, The California Academy of Sciences, and MIT to offer specialized content.
For free. For everyone. Forever. #YouCanLearnAnything
Subscribe to KhanAcademy’s Differential Equations channel:: https://www.youtube.com/channel/UCxSQHGkaDv8UKXE0TUbsOIg?sub_confirmation=1
Subscribe to KhanAcademy: https://www.youtube.com/subscription_center?add_user=khanacademy
https://wn.com/Dirac_Delta_Function_|_Laplace_Transform_|_Differential_Equations_|_Khan_Academy
Introduction to the Dirac Delta Function
Watch the next lesson: https://www.khanacademy.org/math/differential-equations/laplace-transform/properties-of-laplace-transform/v/laplace-transform-of-the-dirac-delta-function?utm_source=YT&utm;_medium=Desc&utm;_campaign=DifferentialEquations
Missed the previous lesson?
https://www.khanacademy.org/math/differential-equations/laplace-transform/properties-of-laplace-transform/v/inverse-laplace-examples?utm_source=YT&utm;_medium=Desc&utm;_campaign=DifferentialEquations
Differential Equations on Khan Academy: Differential equations, separable equations, exact equations, integrating factors, homogeneous equations.
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- published: 07 Oct 2009
- views: 320693
Legendary Physicist and Florida State Professor Paul Dirac
- Order: Reorder
- Duration: 4:00
- Updated: 20 Oct 2009
- views: 90901
Paul A.M. Dirac was a giant of modern physics, one of the "founding fathers" of quantum mechanics. The video clip is from "Fifty Years of Florida State Universi...
Paul A.M. Dirac was a giant of modern physics, one of the "founding fathers" of quantum mechanics. The video clip is from "Fifty Years of Florida State University", Part II.
https://wn.com/Legendary_Physicist_And_Florida_State_Professor_Paul_Dirac
[야매 Review] 소니캐스트 디락(DIRAC) 개봉기, 청음기
- Order: Reorder
- Duration: 7:17
- Updated: 20 Aug 2017
- views: 6919
각종 커뮤니티를 가성비 최강이라는 입소문과 함께 뜨겁게 달구고 있는 바로 그 이어폰 소니캐스트 DIRAC!
벌써 6차 판매까지 완판 되었어요!
사실 제가 비싼 이어폰을 써본적은 별로 없기에 어느정도로 좋은지는 잘 모르겠습니다만, 살면서 써본 이어폰 중에는 가장 좋은것 같습니다........
각종 커뮤니티를 가성비 최강이라는 입소문과 함께 뜨겁게 달구고 있는 바로 그 이어폰 소니캐스트 DIRAC!
벌써 6차 판매까지 완판 되었어요!
사실 제가 비싼 이어폰을 써본적은 별로 없기에 어느정도로 좋은지는 잘 모르겠습니다만, 살면서 써본 이어폰 중에는 가장 좋은것 같습니다......아마도???
https://wn.com/야매_Review_소니캐스트_디락(Dirac)_개봉기,_청음기
각종 커뮤니티를 가성비 최강이라는 입소문과 함께 뜨겁게 달구고 있는 바로 그 이어폰 소니캐스트 DIRAC!
벌써 6차 판매까지 완판 되었어요!
사실 제가 비싼 이어폰을 써본적은 별로 없기에 어느정도로 좋은지는 잘 모르겠습니다만, 살면서 써본 이어폰 중에는 가장 좋은것 같습니다......아마도???
- published: 20 Aug 2017
- views: 6919
Dirac Lecture (1/4) - Quantum Mechanics
- Order: Reorder
- Duration: 59:59
- Updated: 15 Jun 2014
- views: 7060
Paul Dirac Lecture in Christchurch, New Zealand in 1975. I actually took this from Richard Smythe´s channel and cleaned up the audio which was really bad. Mr Di...
Paul Dirac Lecture in Christchurch, New Zealand in 1975. I actually took this from Richard Smythe´s channel and cleaned up the audio which was really bad. Mr Dirac deserves better.
https://wn.com/Dirac_Lecture_(1_4)_Quantum_Mechanics
Paul Dirac Lecture in Christchurch, New Zealand in 1975. I actually took this from Richard Smythe´s channel and cleaned up the audio which was really bad. Mr Dirac deserves better.
- published: 15 Jun 2014
- views: 7060
R. P. Feynman: Elementary Particles and the Laws of Physics (1986 Dirac memorial lecture) I
- Order: Reorder
- Duration: 13:10
- Updated: 06 Jan 2011
- views: 50394
Richard Feynman was Richard Chace Tolman Professor of Theoretical Physics at CALTECH
- published: 06 Jan 2011
- views: 50394
Einstein, Dirac, Godel, Selberg, Harish-Chandra in Princeton.
- Order: Reorder
- Duration: 3:18
- Updated: 25 Sep 2012
- views: 17764
What is DIRAC EQUATION? What does DIRAC EQUATION mean? DIRAC EQUATION meaning & explanation
- Order: Reorder
- Duration: 2:19
- Updated: 25 Oct 2016
- views: 5946
What is DIRAC EQUATION? What does DIRAC EQUATION mean? DIRAC EQUATION meaning & explanation.
Source: Wikipedia.org article, adapted under https://creativecommo...
What is DIRAC EQUATION? What does DIRAC EQUATION mean? DIRAC EQUATION meaning & explanation.
Source: Wikipedia.org article, adapted under https://creativecommons.org/licenses/by-sa/3.0/ license.
In particle physics, the Dirac equation is a relativistic wave equation derived by British physicist Paul Dirac in 1928. In its free form, or including electromagnetic interactions, it describes all spin-1/2 massive particles such as electrons and quarks, for which parity is a symmetry, and is consistent with both the principles of quantum mechanics and the theory of special relativity, and was the first theory to account fully for special relativity in the context of quantum mechanics. It accounted for the fine details of the hydrogen spectrum in a completely rigorous way.
The equation also implied the existence of a new form of matter, antimatter, previously unsuspected and unobserved and which was experimentally confirmed several years later. It also provided a theoretical justification for the introduction of several component wave functions in Pauli's phenomenological theory of spin; the wave functions in the Dirac theory are vectors of four complex numbers (known as bispinors), two of which resemble the Pauli wavefunction in the non-relativistic limit, in contrast to the Schrödinger equation which described wave functions of only one complex value. Moreover, in the limit of zero mass, the Dirac equation reduces to the Weyl equation.
Although Dirac did not at first fully appreciate the importance of his results, the entailed explanation of spin as a consequence of the union of quantum mechanics and relativity—and the eventual discovery of the positron—represents one of the great triumphs of theoretical physics. This accomplishment has been described as fully on a par with the works of Newton, Maxwell, and Einstein before him. In the context of quantum field theory, the Dirac equation is reinterpreted to describe quantum fields corresponding to spin-1/2 particles.
https://wn.com/What_Is_Dirac_Equation_What_Does_Dirac_Equation_Mean_Dirac_Equation_Meaning_Explanation
What is DIRAC EQUATION? What does DIRAC EQUATION mean? DIRAC EQUATION meaning & explanation.
Source: Wikipedia.org article, adapted under https://creativecommons.org/licenses/by-sa/3.0/ license.
In particle physics, the Dirac equation is a relativistic wave equation derived by British physicist Paul Dirac in 1928. In its free form, or including electromagnetic interactions, it describes all spin-1/2 massive particles such as electrons and quarks, for which parity is a symmetry, and is consistent with both the principles of quantum mechanics and the theory of special relativity, and was the first theory to account fully for special relativity in the context of quantum mechanics. It accounted for the fine details of the hydrogen spectrum in a completely rigorous way.
The equation also implied the existence of a new form of matter, antimatter, previously unsuspected and unobserved and which was experimentally confirmed several years later. It also provided a theoretical justification for the introduction of several component wave functions in Pauli's phenomenological theory of spin; the wave functions in the Dirac theory are vectors of four complex numbers (known as bispinors), two of which resemble the Pauli wavefunction in the non-relativistic limit, in contrast to the Schrödinger equation which described wave functions of only one complex value. Moreover, in the limit of zero mass, the Dirac equation reduces to the Weyl equation.
Although Dirac did not at first fully appreciate the importance of his results, the entailed explanation of spin as a consequence of the union of quantum mechanics and relativity—and the eventual discovery of the positron—represents one of the great triumphs of theoretical physics. This accomplishment has been described as fully on a par with the works of Newton, Maxwell, and Einstein before him. In the context of quantum field theory, the Dirac equation is reinterpreted to describe quantum fields corresponding to spin-1/2 particles.
- published: 25 Oct 2016
- views: 5946
Top 9 Paul Dirac Quotes - The English theoretical physicist
- Order: Reorder
- Duration: 1:40
- Updated: 19 Feb 2016
- views: 2849
Top 9 Paul Dirac Quotes - The English theoretical physicist
Top 9 Paul Dirac Quotes - The English theoretical physicist
https://wn.com/Top_9_Paul_Dirac_Quotes_The_English_Theoretical_Physicist
3.1b. HIGGS - Dirac's Equation
- Order: Reorder
- Duration: 20:18
- Updated: 27 Feb 2014
- views: 17873
Week three of the University of Edinburgh's "Discovery of the Higgs Boson" (HIGGS) open online course.
Prof Richard Ball
School of Physics and Astronomy
Univer...
Week three of the University of Edinburgh's "Discovery of the Higgs Boson" (HIGGS) open online course.
Prof Richard Ball
School of Physics and Astronomy
University of Edinburgh
Licence: CC-BY-NC
http://creativecommons.org/licenses/by-nc-sa/3.0/
https://wn.com/3.1B._Higgs_Dirac's_Equation
Week three of the University of Edinburgh's "Discovery of the Higgs Boson" (HIGGS) open online course.
Prof Richard Ball
School of Physics and Astronomy
University of Edinburgh
Licence: CC-BY-NC
http://creativecommons.org/licenses/by-nc-sa/3.0/
- published: 27 Feb 2014
- views: 17873
Geniusze kwantów: Planck, Einstein, Bohr, Dirac, Schrödinger – Wojciech Grygiel
- Order: Reorder
- Duration: 48:44
- Updated: 18 Nov 2015
- views: 11440
Można powiedzieć, że w dziejach mechaniki kwantowej geniusz ukazał się w pełnej krasie. Bez kilku wyraźnych przebłysków geniuszu ta teoria nie ruszyłaby do przo...
Można powiedzieć, że w dziejach mechaniki kwantowej geniusz ukazał się w pełnej krasie. Bez kilku wyraźnych przebłysków geniuszu ta teoria nie ruszyłaby do przodu. Niniejszy wkład z serii "Granice Nauki: genialni uczeni - genialne teorie" dotyczy "geniuszy kwantów" - Maxa Plancka, Alberta Einsteina, Nielsa Bohra, Paula Diraca oraz Erwina Schrödingera.
https://wn.com/Geniusze_Kwantów_Planck,_Einstein,_Bohr,_Dirac,_Schrödinger_–_Wojciech_Grygiel
Można powiedzieć, że w dziejach mechaniki kwantowej geniusz ukazał się w pełnej krasie. Bez kilku wyraźnych przebłysków geniuszu ta teoria nie ruszyłaby do przodu. Niniejszy wkład z serii "Granice Nauki: genialni uczeni - genialne teorie" dotyczy "geniuszy kwantów" - Maxa Plancka, Alberta Einsteina, Nielsa Bohra, Paula Diraca oraz Erwina Schrödingera.
- published: 18 Nov 2015
- views: 11440
AIDARUS MALIBOI | DIRAC | "(Official Video)" 2017
- Order: Reorder
- Duration: 5:44
- Updated: 30 Jun 2017
- views: 74892
- published: 30 Jun 2017
- views: 74892
- Playlist
- Chat
- Playlist
- Chat
20:34
Paul Dirac Interview, Göttingen 1982
Paul M. Dirac Speaking to F. Hund on Symmetry in Relativity, Quantum Mechanics and Physics...
published: 19 Jun 2017
Paul Dirac Interview, Göttingen 1982
Paul Dirac Interview, Göttingen 1982
- Report rights infringement
- published: 19 Jun 2017
- views: 24035
59:59
Dirac Lecture 1 (of 4) - Quantum Mechanics
1975 Christchurch - New Zealand. Dirac's comments here can be nicely joined with the words...
published: 28 Jan 2013
Dirac Lecture 1 (of 4) - Quantum Mechanics
Dirac Lecture 1 (of 4) - Quantum Mechanics
- Report rights infringement
- published: 28 Jan 2013
- views: 181652
54:04
Graham Farmelo on Paul Dirac and Mathematical Beauty
Adjunct Professor of Physics at Northeastern University in Boston, Graham Farmelo, on Paul...
published: 02 Mar 2012
Graham Farmelo on Paul Dirac and Mathematical Beauty
Graham Farmelo on Paul Dirac and Mathematical Beauty
- Report rights infringement
- published: 02 Mar 2012
- views: 111006
45:44
Paul Dirac and the religion of mathematical beauty
Speaker: Graham Farmelo
Filmed at The Royal Society, London on Fri 04 Mar 2011 1pm - 2pm
h...
published: 10 Dec 2013
Paul Dirac and the religion of mathematical beauty
Paul Dirac and the religion of mathematical beauty
- Report rights infringement
- published: 10 Dec 2013
- views: 86043
17:06
Quantum Mechanics 12a - Dirac Equation I
When quantum mechanics and relativity are combined to describe the electron the result is ...
published: 19 Dec 2015
Quantum Mechanics 12a - Dirac Equation I
Quantum Mechanics 12a - Dirac Equation I
- Report rights infringement
- published: 19 Dec 2015
- views: 23307
19:21
PAUL DIRAC. Parte 1: ¿Quién fue Paul Dirac?
PDF: http://aula141.cat/wp-content/uploads/2015/10/Presentaci%C3%B3n_Dirac.pdf
Resumen br...
published: 16 Oct 2015
PAUL DIRAC. Parte 1: ¿Quién fue Paul Dirac?
PAUL DIRAC. Parte 1: ¿Quién fue Paul Dirac?
- Report rights infringement
- published: 16 Oct 2015
- views: 36000
9:17
Paul Dirac on Dimensionless Physical Constants and "Large Number Hypothesis"
Paul Dirac was one of the most proficient theoretical physicists of the 20th century. In t...
published: 22 Nov 2013
Paul Dirac on Dimensionless Physical Constants and "Large Number Hypothesis"
Paul Dirac on Dimensionless Physical Constants and "Large Number Hypothesis"
- Report rights infringement
- published: 22 Nov 2013
- views: 83257
1:05:56
Quantum Mechanics Concepts: 1 Dirac Notation and Photon Polarisation
Part 1 of a series: covering Dirac Notation, the measurable Hermitian matrix, the eigenvec...
published: 20 Aug 2013
Quantum Mechanics Concepts: 1 Dirac Notation and Photon Polarisation
Quantum Mechanics Concepts: 1 Dirac Notation and Photon Polarisation
- Report rights infringement
- published: 20 Aug 2013
- views: 266932
44:11
PAUL DIRAC. Parte 2: ¿Cómo llegó Dirac a su ecuación?
PDF: http://aula141.cat/wp-content/uploads/2015/10/Presentaci%C3%B3n_Dirac.pdf
Trato de e...
published: 16 Oct 2015
PAUL DIRAC. Parte 2: ¿Cómo llegó Dirac a su ecuación?
PAUL DIRAC. Parte 2: ¿Cómo llegó Dirac a su ecuación?
- Report rights infringement
- published: 16 Oct 2015
- views: 54126
17:48
Dirac delta function | Laplace transform | Differential Equations | Khan Academy
Introduction to the Dirac Delta Function
Watch the next lesson: https://www.khanacademy.o...
published: 07 Oct 2009
Dirac delta function | Laplace transform | Differential Equations | Khan Academy
Dirac delta function | Laplace transform | Differential Equations | Khan Academy
- Report rights infringement
- published: 07 Oct 2009
- views: 320693
4:00
Legendary Physicist and Florida State Professor Paul Dirac
Paul A.M. Dirac was a giant of modern physics, one of the "founding fathers" of quantum me...
published: 20 Oct 2009
Legendary Physicist and Florida State Professor Paul Dirac
Legendary Physicist and Florida State Professor Paul Dirac
- Report rights infringement
- published: 20 Oct 2009
- views: 90901
7:17
[야매 Review] 소니캐스트 디락(DIRAC) 개봉기, 청음기
각종 커뮤니티를 가성비 최강이라는 입소문과 함께 뜨겁게 달구고 있는 바로 그 이어폰 소니캐스트 DIRAC!
벌써 6차 판매까지 완판 되었어요!
사실 제가 비싼 ...
published: 20 Aug 2017
[야매 Review] 소니캐스트 디락(DIRAC) 개봉기, 청음기
[야매 Review] 소니캐스트 디락(DIRAC) 개봉기, 청음기
- Report rights infringement
- published: 20 Aug 2017
- views: 6919
59:59
Dirac Lecture (1/4) - Quantum Mechanics
Paul Dirac Lecture in Christchurch, New Zealand in 1975. I actually took this from Richard...
published: 15 Jun 2014
Dirac Lecture (1/4) - Quantum Mechanics
Dirac Lecture (1/4) - Quantum Mechanics
- Report rights infringement
- published: 15 Jun 2014
- views: 7060
13:10
R. P. Feynman: Elementary Particles and the Laws of Physics (1986 Dirac memorial lecture) I
Richard Feynman was Richard Chace Tolman Professor of Theoretical Physics at CALTECH
published: 06 Jan 2011
R. P. Feynman: Elementary Particles and the Laws of Physics (1986 Dirac memorial lecture) I
R. P. Feynman: Elementary Particles and the Laws of Physics (1986 Dirac memorial lecture) I
- Report rights infringement
- published: 06 Jan 2011
- views: 50394
Paul Dirac Interview, Göttingen 1982...
Dirac Lecture 1 (of 4) - Quantum Mechanics...
Graham Farmelo on Paul Dirac and Mathematical Beau...
Paul Dirac and the religion of mathematical beauty...
Quantum Mechanics 12a - Dirac Equation I...
PAUL DIRAC. Parte 1: ¿Quién fue Paul Dirac?...
Paul Dirac on Dimensionless Physical Constants and...
Quantum Mechanics Concepts: 1 Dirac Notation and P...
PAUL DIRAC. Parte 2: ¿Cómo llegó Dirac a su ecuaci...
Dirac delta function | Laplace transform | Differe...
Legendary Physicist and Florida State Professor Pa...
![[야매 Review] 소니캐스트 디락(DIRAC) 개봉기, 청음기](http://web.archive.org./web/20180101122642/https://i.ytimg.com/vi/iCgSb3YH9G0/0.jpg)
[야매 Review] 소니캐스트 디락(DIRAC) 개봉기, 청음기...
Dirac Lecture (1/4) - Quantum Mechanics...
R. P. Feynman: Elementary Particles and the Laws o...
Einstein, Dirac, Godel, Selberg, Harish-Chandra in...
What is DIRAC EQUATION? What does DIRAC EQUATION m...
Top 9 Paul Dirac Quotes - The English theoretical ...
3.1b. HIGGS - Dirac's Equation...
Geniusze kwantów: Planck, Einstein, Bohr, Dirac, S...
AIDARUS MALIBOI | DIRAC | "(Official Video)" 2017...
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Lyrics list:lyrics
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Chaos, Tricky
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Bury The Evidence, Tricky
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Bubbles, Tricky
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Broken Homes, Tricky
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Brainiac, Tricky
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Blue Lines, Tricky
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Aftermath, Tricky
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6 Minutes, Tricky
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Analyze Me, Tricky
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Excess, Tricky
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developed with YouTube
Chaos
(Tricky and A. Smith -> Aka Ambersunshower ) ...
Ambersunshower :
She's been waiting for that special someone
Anguished by the tears left behind them
Fortifying all that lying
Putrid taste left in her mouth
Chorus :
(Ambersunshower sings while Tricky raps)
Ambersunshower :
Follow me, follow me
Down
Follow me, follow me
Down
Tricky :
Yeah, c'mon
Let's do the maniac
Maniac, bumping like a brainiac
Brainiac, I don't remember [?]
Land me down, touch me down at heathrow
Reach down, the first time I ever feel
Bouncers [face?] on 57th st
Calm down, I feel a cool breeze and
Not particular
I think I found a reason
[For I saw?] what I saw
Ambersunshower :
She's been waiting for that special someone
But then look what she's got left
Fortifying all that lyingputrid taste left in her mouth
Chorus :
(Ambersunshower sings while Tricky raps)
Ambersunshower :
Follow me, follow me
Down
Follow me, follow me
Down
Tricky :
Yeah, c'mon
Let's do the maniac
Maniac, bumping like a brainiac
Brainiac, I don't remember [?]
Land me down, touch me down at heathrow
Reach down, the first time I ever feel
Bouncers [face?] on 57th st
Calm down, I feel a cool breeze and
Not particular
I think I found a reason
[For I saw?] what I saw
A: contamination cramps the surface
blood runs cooler than you flow
she is hiding smiles behind whispers and tears
chaos reaches higher ground
Ambersunshower :
Chaos, chaos, chaos
Ambersunshower :
Follow me, follow me
Down
Follow me, follow me
Down
back
Pregnant Venezuelan teen fatally shot in holiday food line
Edit The Star 01 Jan 2018
CARACAS. A pregnant 18-year-old Venezuelan woman was fatally shot in the head early Sunday in Caracas as she waited in line at a National Guard outpost to buy ham for her New Year’s meal, relatives said ... ....
back
Costa Rican plane crash kills 12, including 10 US citizens
Edit The Himalayan 01 Jan 2018
SAN JOSE. A Costa Rican plane crashed into woodland off a popular tourist beach on Sunday, killing 10 US citizens and two local pilots, the Costa Rican government said. The accident occurred in the mountainous area off the Punta Islita beach town in the province of Guanacaste, about 230 km (140 miles) west of the capital of San Jose ... The plane had passed a safety inspection about a month ago and was authorized to fly, Cubillo said ... ....
back
Over 5,000 Muslims killed in Boko Haram violence, reveals Islamic body data
Edit Sify 01 Jan 2018
[Nigeria], Jan. 01 (ANI). Up to 5,247 Muslims have been killed in the Boko Haram violence in seven local government areas of Adamawa town in northern Nigeria between 2013 and 2017. According to local media reports, the data was revealed by the Adamawa State chapter of Muslim Council ... (ANI) ....
back
Tiger Zinda Hai 2nd weekend box office collection: Salman Khan-starrer bids adieu to 2017 with ...
Edit International Business Times 01 Jan 2018
Tiger Zinda HaiTwitter. Salman Khan and Katrina Kaif-starrer Tiger Zinda Hai is undoubtedly one of the biggest releases of 2017. Released on December 22, the movie witnessed a massive opening at the box office and crossed the Rs 250-crore mark in its second weekend in the domestic market. Tiger Zinda Hai's Day-1 collection was Rs 33.75 crore, making it this year's second-highest grosser on opening day ... He tweeted ... Total. ₹ 232.52 cr ... #TZH....
What are bosons and how they got their name?
Edit The Hindu 01 Jan 2018
Bose’s name was very much in the news when CERN discovered the Higgs boson a few years back ... Matter particles such as electrons, protons etc obey what is known as the Fermi-Dirac statistics and hence are known as ‘Fermions’ ... Why call them bosons? ... Physicist Paul Dirac was the first to use the term “boson” to describe the particles that obeyed Bose-Einstein statistics, in order to celebrate Bose’s contribution to developing this theory. ....
A powerful guiding principle for topological quantum synthesis
Edit PhysOrg 28 Dec 2017
Topological materials can be classified into topological insulators (TIs), topological crystalline insulators, topological Dirac semimetals, topological Weyl semimetals, topological nodal-line semimetals, and others. Such materials are attracting attention in condensed matter physics and materials science due to their intriguing physical properties and promising technological applications ... ....
UKM Develops Low-cost Device To Measure Air Quality
Edit Malaysian National News Agency 28 Dec 2017
By Kurniawati Kamarudin ... The device, which the researchers have named Dirac V1.0, was developed in collaboration with Cranfield University and University of Cambridge in the United Kingdom ... ....
When physicist Bohr put a burning pipe in pocket
Edit The Times of India 25 Dec 2017
Chennai. Few knew that Nobel laureate Niels Bohr often, during a lecture, placed a smoking pipe in his pocket, but the audience at the Ekamra Nivas lectures in the city in 1960 became aware of this, after frequent glances from his wife Margrethe led to an explanation ... The Danish physicist, who developed the Bohr model of the atom, Murray Gellman, Abdus Salam and Paul Dirac were among those who descended on Ekamra Nivas ... ....
Special edition Android One Xiaomi Mi A1 Red comes to India: All you need to know
Edit International Business Times 18 Dec 2017
All you need to knowXiaomi India press kit ... Read more ... 2.5GHz & 5GHZ), Type C USB port, IR Blaster, A-GPS, FM Radio, 10V smart power amplifier paired with the advanced Dirac HD Sound algorithm provides powerful speaker audio and a dedicated audio amplifier that supports high-impedance headphones of up to 600Ω (Ohm), dual pyrolytic graphite sheet, which helps radiate heat, helping reduce thermal performance by up to 2-degrees Celsius ... ....
Nanoscale fabrication techniques enable creation of “artificial graphene”
Edit The Engineer 15 Dec 2017
It may be possible to engineer the nanoscale-patterned semiconductor material to produce exotic electronic properties ... The quantum wells were etched onto a semiconductor material and spaced about 50nm apart ... When they mapped these transitions, the team found that they were approaching zero in a linear fashion around what is called the “Dirac point” where the electron density vanishes, a hallmark of graphene ... Steven G ... ....
Premium Android One series Xiaomi Mi A1 gets generous price cut in India and it's permanent!
Edit International Business Times 11 Dec 2017
Xiaomi Mi A1KVN Rohit/ IBTimes India ... Read more ... PERIOD ... 2.5GHz & 5GHZ), Type C USB port, IR Blaster, A-GPS, FM Radio, 10V smart power amplifier paired with the advanced Dirac HD Sound algorithm provides powerful speaker audio and a dedicated audio amplifier that supports high-impedance headphones of up to 600Ω (Ohm), dual pyrolytic graphite sheet, which helps radiate heat, helping reduce thermal performance by up to 2-degrees Celsius ... ....
OnePlus 5T Star Wars Limited Edition coming to Europe: Official price details revealed ahead of launch
Edit International Business Times 08 Dec 2017
OnePlus 5T Star Wars Limited Edition coming to Europe. Official price details revealed ahead of launchOnePlus Official Webpage (screen-shot) ... Also read ... What's changed? ... 2.4GHz/5GHz; MIMO 2x2), NFC (Near Field Communication), USB 2.0 Type-C, Dirac HD Sound, AANC, GPS/GLONASS/BeiDou/Galileo, bottom-facing speakers, 3.5mm audio jack, 3 microphones with noise cancellation feature, bottom-facing speakers, Anodized Aluminum, Alert slider ... ....
B612 Asteroid Institute provides valuable analysis to discovery of First Interstellar Object
Edit SpaceDaily 06 Dec 2017
San Francisco CA (SPX) Dec 06, 2017. Within days of the announcement by NASA's Minor Planet Center of the discovery of the first-ever interstellar object, 'Oumuamua, B612's new Asteroid Institute began a collaborative effort that led to significant analysis about the discovery. Bryce Bolin, a senior researcher at the Asteroid Institute as well as a DIRAC Institute Fellow, was the lead author on the study measuring 1I/'Oumuamu ... ....
OnePlus 5T Star Wars Limited Edition: Official availability details and more
Edit International Business Times 04 Dec 2017
It's Confirmed. Special OnePlus 5T Star Wars Limited Edition is coming this month; here's how it looksOnePlus Press Kit ... In total, it resembles a stormtrooper ... Also read ... 2.4GHz/5GHz; MIMO 2x2), NFC (Near Field Communication), USB 2.0 Type-C, Dirac HD Sound, AANC, GPS/GLONASS/BeiDou/Galileo, bottom-facing speakers, 3.5mm audio jack, 3 microphones with noise cancellation feature, bottom-facing speakers, Anodized Aluminum, Alert slider ... ....
It's Confirmed: Special OnePlus 5T Star Wars Limited Edition is coming soon and here's how ...
Edit International Business Times 03 Dec 2017
It's Confirmed. Special OnePlus 5T Star Wars Limited Edition is coming this month; here's how it looksOnePlus Press Kit ... Also read. OnePlus 5T vs OnePlus 5. What's changed? ... 2.4GHz/5GHz; MIMO 2x2), NFC (Near Field Communication), USB 2.0 Type-C, Dirac HD Sound, AANC, GPS/GLONASS/BeiDou/Galileo, bottom-facing speakers, 3.5mm audio jack, 3 microphones with noise cancellation feature, bottom-facing speakers, Anodized Aluminum, Alert slider ... ....
Android flagship OnePlus 5T open sale goes live in India; price, launch offers, exchange deals ...
Edit International Business Times 28 Nov 2017
Android flagship OnePlus 5T open sale goes live in India; price, launch offers and more ... Also read. OnePlus 5T vs OnePlus 5. What's changed? ... Also read ... Models OnePlus 5T ... 2.4GHz/5GHz; MIMO 2x2), NFC (Near Field Communication), USB 2.0 Type-C, Dirac HD Sound, AANC, GPS/GLONASS/BeiDou/Galileo, bottom-facing speakers, 3.5mm audio jack, 3 microphones with noise cancellation feature, bottom-facing speakers, Anodized Aluminum, Alert slider ... ....
One-hour Special Preview Sale to go live on Amazon India on Nov 24; launch offers, ...
Edit International Business Times 24 Nov 2017
[Representational Image]One-hour OnePlus 5T Special Preview Sale to go live on Amazon India on Friday; launch offers, price and more In Picture ... Also read ... What's changed? ... 2.4GHz/5GHz; MIMO 2x2), NFC (Near Field Communication), USB 2.0 Type-C, Dirac HD Sound, AANC, GPS/GLONASS/BeiDou/Galileo, bottom-facing speakers, 3.5mm audio jack, 3 microphones with noise cancellation feature, bottom-facing speakers, Anodized Aluminum, Alert slider....
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