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
author: tvochannel
Graham Farmelo on Paul Dirac and Mathematical Beauty
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...- published: 02 Mar 2012
- views: 31156
- author: tvochannel
9:17
Paul Dirac on Dimensionless Physical Constants
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
Paul Dirac on Dimensionless Physical Constants
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 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 Dyson in their formulation of quantum electrodynamics.- published: 22 Nov 2013
- views: 255
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
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: 7
59:59
Dirac Lecture 1 (of 4) - Quantum Mechanics
1975 Christchurch - New Zealand (Grateful thanks to Ed Guy who has provided a magnificent ...
published: 28 Jan 2013
author: Richard Smythe
Dirac Lecture 1 (of 4) - Quantum Mechanics
Dirac Lecture 1 (of 4) - Quantum Mechanics
1975 Christchurch - New Zealand (Grateful thanks to Ed Guy who has provided a magnificent summary of this lecture - visit http://www.animatedphysics.com/ener...- published: 28 Jan 2013
- views: 29972
- author: Richard Smythe
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
author: FloridaState
Legendary Physicist and Florida State Professor Paul Dirac
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 mechanics. The video clip is from "Fifty Years of Florida State Unive...- published: 20 Oct 2009
- views: 53213
- author: FloridaState
2:51
Reminiscenses of Paul Dirac by Victor Shapiro
Vic Shapiro discusses Paul Dirac selling his TV set in Princeton....
published: 20 Jul 2010
author: C shap
Reminiscenses of Paul Dirac by Victor Shapiro
Reminiscenses of Paul Dirac by Victor Shapiro
Vic Shapiro discusses Paul Dirac selling his TV set in Princeton.- published: 20 Jul 2010
- views: 2390
- author: C shap
16:05
Histoire de la physique quantique (partie 7) Paul Dirac (1902 -1984) 82ans
Voici mon vidéo sur la physique quantique( partie 7). Dans ce vidéo vous serez à même de c...
published: 22 Nov 2012
author: Jean-Claude Audet
Histoire de la physique quantique (partie 7) Paul Dirac (1902 -1984) 82ans
Histoire de la physique quantique (partie 7) Paul Dirac (1902 -1984) 82ans
Voici mon vidéo sur la physique quantique( partie 7). Dans ce vidéo vous serez à même de constater que Paul Dirac ce physicien anglais était vraiment un gran...- published: 22 Nov 2012
- views: 613
- author: Jean-Claude Audet
6:33
The Strangest Man
Graham Farmelo has written a marvelous account of the life of Paul Dirac. In fact, it has ...
published: 16 Feb 2010
author: Joanne Manaster
The Strangest Man
The Strangest Man
Graham Farmelo has written a marvelous account of the life of Paul Dirac. In fact, it has been considered one of the top 100 books of 2009 by several major p...- published: 16 Feb 2010
- views: 7727
- author: Joanne Manaster
9:01
Graham Farmelo - The Strangest Man - Part 1 of 3
Graham Farmelo's 'The Strangest Man' looks at the extraordinary life of the theoretical ph...
published: 27 Apr 2010
author: Blackwell Bookshops
Graham Farmelo - The Strangest Man - Part 1 of 3
Graham Farmelo - The Strangest Man - Part 1 of 3
Graham Farmelo's 'The Strangest Man' looks at the extraordinary life of the theoretical physicist, Paul Dirac. Little-known beyond the scientific community, ...- published: 27 Apr 2010
- views: 3192
- author: Blackwell Bookshops
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
author: x1x2x3ct
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
Richard Feynman was Richard Chace Tolman Professor of Theoretical Physics at CALTECH.- published: 06 Jan 2011
- views: 25007
- author: x1x2x3ct
3:55
Paul Dirac, his equation and his radio
A film in the Old Cavendish Laboratory, where Alan Macfarlane briefly describes Dirac's eq...
published: 17 Dec 2011
author: ayabaya
Paul Dirac, his equation and his radio
Paul Dirac, his equation and his radio
A film in the Old Cavendish Laboratory, where Alan Macfarlane briefly describes Dirac's equation - drawn on his blackboard by Neil Turok and with the signatu...- published: 17 Dec 2011
- views: 6334
- author: ayabaya
19:51
Paul Dirac
The tale of Dirac in documentary form....
published: 17 Apr 2013
author: TallyScience
Paul Dirac
Paul Dirac
The tale of Dirac in documentary form.- published: 17 Apr 2013
- views: 195
- author: TallyScience
28:19
Paul Dirac
Please give us a THUMBS UP if you like our videos!!!
Source:http://en.wikipedia.org/wiki/P...
published: 14 Sep 2013
Paul Dirac
Paul Dirac
Please give us a THUMBS UP if you like our videos!!! Source:http://en.wikipedia.org/wiki/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" referring to his autistic traits. His mathematical brilliance, however, means he is regarded as one of the most significant physicists of the 20th century.- published: 14 Sep 2013
- views: 0
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5:24
Beautiful Minds - A Tribute to Paul Adrien Maurice Dirac
in my current physics graduate i've a work tributing this genius of QM ( quantum mechanics...
published: 17 Oct 2012
author: Erwin Schrodinger
Beautiful Minds - A Tribute to Paul Adrien Maurice Dirac
Beautiful Minds - A Tribute to Paul Adrien Maurice Dirac
in my current physics graduate i've a work tributing this genius of QM ( quantum mechanics) listing others great genius from various areas of science.- published: 17 Oct 2012
- views: 4518
- author: Erwin Schrodinger
0:16
How to Pronounce Paul Dirac
Learn how to say Paul Dirac correctly with EmmaSaying's "how do you pronounce" free tutori...
published: 30 Mar 2014
How to Pronounce Paul Dirac
How to Pronounce Paul Dirac
Learn how to say Paul Dirac correctly with EmmaSaying's "how do you pronounce" free tutorials. http://www.emmasaying.com/ Take a look at my comparison tutorials here: https://www.youtube.com/user/EmmaSaying/videos?view=1 Subscribe to my channel here: https://www.youtube.com/user/EmmaSaying- published: 30 Mar 2014
- views: 27
59:59
Paul Dirac's Christchurch Lectures - 1 - Quantum Mechanics
New Zealand, 1975.
Re-encoded from Richard Smythe's original post.
https://www.youtube.com...
published: 02 May 2014
Paul Dirac's Christchurch Lectures - 1 - Quantum Mechanics
Paul Dirac's Christchurch Lectures - 1 - Quantum Mechanics
New Zealand, 1975. Re-encoded from Richard Smythe's original post. https://www.youtube.com/watch?v=vwYs8tTLZ24- published: 02 May 2014
- views: 24
