- published: 23 Feb 2015
- views: 31421
A photon is an elementary particle, the quantum of light and all other forms of electromagnetic radiation. It is the force carrier for the electromagnetic force, even when static via virtual photons. The effects of this force are easily observable at the microscopic and at the macroscopic level, because the photon has zero rest mass; this allows long distance interactions. Like all elementary particles, photons are currently best explained by quantum mechanics and exhibit wave–particle duality, exhibiting properties of waves and of particles. For example, a single photon may be refracted by a lens or exhibit wave interference with itself, but also act as a particle giving a definite result when its position is measured. Waves and quanta, being two observable aspects of a single phenomenon, cannot have their true nature described in terms of any mechanical model. A representation of this dual property of light, which assumes certain points on the wave front to be the seat of the energy, is also impossible. Thus, the quanta in a light wave cannot be spatially localized. Some defined physical parameters of a photon are listed.
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.
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.
The General Certificate of Education Advanced Level (short form: GCE Advanced Level), or more commonly, the A Level, is a school leaving qualification offered by educational bodies in the United Kingdom and the British Crown dependencies to students completing secondary or pre-university education. A number of countries, including Singapore, Kenya, Mauritius and Zimbabwe have developed qualifications with the same name as and a similar format to the British A Levels. Obtaining A Level or equivalent qualifications is generally required for university entrance.
A Levels are generally worked towards over two years and split into two parts, with one part studied in each year. The first part is known as the Advanced Subsidiary Level, A1 Level or AS Level (the AS Level acronym was previously used for the separate Advanced Supplementary Level qualification). The second part is known as the A2 Level and is more in depth and academically rigorous than the A1 Level. The AS Level is a qualification in its own right, and the AS Level combined with the A2 Level forms the complete A Level qualification. Up to June 2009 a third Special / Advanced Extension Award level was available for the brightest candidates.
Wikipedia (i/ˌwɪkᵻˈpiːdiə/ or i/ˌwɪkiˈpiːdiə/ WIK-i-PEE-dee-ə) is a free-access, free-content Internet encyclopedia, supported and hosted by the non-profit Wikimedia Foundation. Those who can access the site can edit most of its articles. Wikipedia is ranked among the ten most popular websites, and constitutes the Internet's largest and most popular general reference work.
Jimmy Wales and Larry Sanger launched Wikipedia on January 15, 2001. Sanger coined its name, a portmanteau of wiki and encyclopedia. Initially only in English, Wikipedia quickly became multilingual as it developed similar versions in other languages, which differ in content and in editing practices. The English Wikipedia is now one of 291 Wikipedia editions and is the largest with 5,081,662 articles (having reached 5,000,000 articles in November 2015). There is a grand total, including all Wikipedias, of over 38 million articles in over 250 different languages. As of February 2014, it had 18 billion page views and nearly 500 million unique visitors each month.
Actors: Ken Arnold (actor), Ken Arnold (actor), Adam Bertocci (miscellaneous crew), Kent Sanderson (producer), Kent Sanderson (director), Kent Sanderson (writer), Dariusz M. Uczkowski (actor), Gavin Keese (composer), David Ferrall (actor), Kevin Hoyer (producer), David Ferrall (actor), Kate LaRoss (actress), Kate LaRoss (actress), Chris Golio (producer), Todd Reichart (actor),
Genres: Comedy, Drama, Sci-Fi, Short,Actors: John Trapani (actor), Karen Ross (actress), Greg Schroeder (actor), Owen Miller (actor), Russell E. Katzman (miscellaneous crew), Bryan Thompson (miscellaneous crew), Irene Kessler (actress), Jessica K. Peterson (actress), Peter Haig (actor), Paul Lasa (actor), Patrick Ford (producer), Patrick Ford (writer), Domnik Mack (composer), Patrick Ford (director), Patrick Ford (editor),
Genres: Sci-Fi,Actors: Brianne Siddall (actress), Richard Epcar (actor), Barbara Goodson (actress), Megumi Hayashibara (actress), Leiji Matsumoto (writer), Mami Koyama (actress), Mona Marshall (actress), Rica Matsumoto (actress), Michelle Ruff (actress), Melodee Spevack (actress), Michael McConnohie (actor), Ichirô Nagai (actor), Bob Papenbrook (actor), Mike Reynolds (actor), Kôichi Yamadera (actor),
Genres: Animation, Sci-Fi,Actors: Brianne Siddall (actress), Richard Epcar (actor), Barbara Goodson (actress), Megumi Hayashibara (actress), Leiji Matsumoto (writer), Mami Koyama (actress), Mona Marshall (actress), Rica Matsumoto (actress), Michelle Ruff (actress), Melodee Spevack (actress), Michael McConnohie (actor), Ichirô Nagai (actor), Bob Papenbrook (actor), Mike Reynolds (actor), Kôichi Yamadera (actor),
Genres: Animation, Sci-Fi,Actors: Yui Horie (actress), Junko Takeuchi (actress), Kôichi Yamadera (actor), Tara Sands (actress), Yuri Amano (actress), Akiko Hiramatsu (actress), Ai Orikasa (actress), Crispin Freeman (actor), Yu Asakawa (actress), Tristan Goddard (actor), Yôsuke Kuroda (writer), Keitarou Motonaga (producer), Scott Cargle (actor), Suzy Prue (actress), Arlen Tarlofsky (director),
Plot: Photon, a young man with a kind heart and superhuman strength, leaves his village on Sandy Planet (a desert world) in search of a runaway friend. During this heroic quest, he is accidentally engaged to a runaway space pilot! Now they're on the run from the evil emperor of the galaxy and his bumbling henchmen. But even worse than the incompetent bad guys are the disastrous cooking contests, exploding spas, and cheerleading aliens.
Keywords: animeActors: Yui Horie (actress), Junko Takeuchi (actress), Kôichi Yamadera (actor), Tara Sands (actress), Yuri Amano (actress), Akiko Hiramatsu (actress), Ai Orikasa (actress), Crispin Freeman (actor), Yu Asakawa (actress), Tristan Goddard (actor), Yôsuke Kuroda (writer), Keitarou Motonaga (producer), Scott Cargle (actor), Suzy Prue (actress), Arlen Tarlofsky (director),
Plot: Photon, a young man with a kind heart and superhuman strength, leaves his village on Sandy Planet (a desert world) in search of a runaway friend. During this heroic quest, he is accidentally engaged to a runaway space pilot! Now they're on the run from the evil emperor of the galaxy and his bumbling henchmen. But even worse than the incompetent bad guys are the disastrous cooking contests, exploding spas, and cheerleading aliens.
Keywords: animeWhat exactly is a photon? this video shows how we can use the particle model, with individual corpuscles of energy, to explain certain properties of EM radiation. If you want to find out more about the photon then I can highly recommend you listen to this radio show: http://www.bbc.co.uk/programmes/b051vlpf If you would like to see more A Level Physics videos then please Subscribe to my channel to keep updated with new videos and to search the Playlists already created. You can also visit my site 'A Level Physics Online' to see how all the videos relate to your course and for even more resources at http://www.alevelphysicsonline.com/ Thanks for watching, Mr Matheson
Visit http://ilectureonline.com for more math and science lectures! In this video I will introduce photon as a piece of energy, having no mass traveling at the speed of light, acts like a particle, having momentum, and having energy that is quantized. Next video in the Particle Physics series can be seen at: http://youtu.be/Rp1j4OIZYLk
125 - Photons In this video Paul Andersen explains how light travels in photons which can be described as both particles and waves. Einstein showed that photons can be described as particles using the photoelectric effect to show that the energy of a photon is related to the frequency and Planck's constant. The quantized nature of light can be found in both spectral lines and the photoelectric effect. Do you speak another language? Help me translate my videos: http://www.bozemanscience.com/translations/ Music Attribution Title: String Theory Artist: Herman Jolly http://sunsetvalley.bandcamp.com/track/string-theory All of the images are licensed under creative commons and public domain licensing: “Albert Einstein.” Wikipedia, the Free Encyclopedia, May 1, 2015. http://en.wikipedia.o...
In this video, David explains what a photon is and how to determine the energy of a photon. Created by David SantoPietro. Watch the next lesson: https://www.khanacademy.org/test-prep/mcat/physical-processes/infrared-and-ultraviolet-visible-spectroscopy/v/introduction-to-infrared-spectroscopy?utm_source=YT&utm;_medium=Desc&utm;_campaign=mcat Missed the previous lesson? https://www.khanacademy.org/test-prep/mcat/physical-processes/light-and-electromagnetic-radiation-questions/v/thin-film-interference-part-2?utm_source=YT&utm;_medium=Desc&utm;_campaign=mcat MCAT on Khan Academy: Go ahead and practice some passage-based questions! About Khan Academy: Khan Academy offers practice exercises, instructional videos, and a personalized learning dashboard that empower learners to study at their own p...
Planck found that to explain the relationship between temperature and radiation he had to assume that radiation energy is transferred in discrete quanta. Einstein pointed out that the so-called photoelectric effect provided convincing evidence that Planck's quanta were real particles, what we now call photons. The playlist: http://www.youtube.com/playlist?list=PL193BC0532FE7B02C http://www.sps.ch/fileadmin/pictures/Experimente/FromPhotonsToWaves.avi
http://bigthink.com Propelling a spaceship with photons would be like trying to energize a spaceship with a flashlight.
In less than 100 seconds, optics researcher Peter Mosley of the University of Bath explains why a source of photons is a very convenient tool for physicists
Recorded LIVE at Printworks London, 30th April 2017. Subscribe to our channel: http://bit.ly/BE-AT-YouTube Facebook: http://bit.ly/BE-AT-Facebook Twitter: http://bit.ly/BE-AT-Twitter Instagram: http://bit.ly/BE-AT-Instagram DailyMotion: http://bit.ly/BE-AT-DailyMotion
The eyes like fiery embers*
Smoking nostrils and flowing mane
Untamed steed of hell
Sent by death
This black mount as fast as wind
Will lead you to eternal flames
So furious you are riding
Black conqueror
[Chorus:]
Fly like arrow
Through valleys and plains
On the back of the demon horse
Towards the thresholds of the hades
Is the dark conqueror end
Through your kingdom you are flying
You are trying to pull the reins
But the beast is stronger than you
Mad race to the burning chasm