The positron or antielectron is the antiparticle or the antimatter counterpart of the electron. It has an electric charge of +1 e, a spin of 1/2 (the same as the electron), and the same mass as an electron. When a positron collides with an electron, annihilation occurs. If this collision occurs at low energies, it results in the production of two or more photons. Positrons can be created by positron emission radioactive decay (through weak interactions), or by pair production from a sufficiently energetic photon which is interacting with an atom in a material. (Wikipedia).
http://www.teachastronomy.com/ The positron is the antiparticle of the electron. Every particle in the zoo of nature has an antiparticle. The positron is positively charged whereas the electron is negatively charged. It has the same mass however. Electrons and positrons if they combine
From playlist 13. Particle Physics and the Sun
Professor Ed Copeland gives his own explanation and brief history of CERN - a Mecca for physicists and home of the Large Hadron Collider. CERN website: http://public.web.cern.ch/public/ Visit our website at http://www.sixtysymbols.com/ We're on Facebook at http://www.facebook.com/sixtysym
From playlist Large Hadron Collider - Sixty Symbols
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From playlist Science Unplugged: General Relativity
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From playlist Science Unplugged: Particle Physics
A tour of CERN and its research facilities. Find out more about CERN: http://home.cern/ Produced by: CERN Video Productions Director: CERN Video Productions You can follow us on: cern.ch youtube.com/cerntv facebook.com/cern twitter.com/cern/ linkedin.com/company/cern instagram.com/cern
From playlist CERN - the Laboratory
Knowledge and technology: from CERN to society
Explore how fundamental research is a driving force for innovation. As well as the World Wide Web, the most famous CERN technological innovation, CERN’s particle accelerators and detectors have many applications in everyday life. Electronic particle-detection techniques, for example, have
From playlist CERN - the Laboratory
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From playlist Science Unplugged: Quantum Mechanics
Special Relativity A1 The Postulates of Special Relativity
The postulates of special relativity.
From playlist Physics - Special Relativity
Positron Acceleration using Plasma-based accelerators by Aakash Sahai
06 March 2017 to 17 March 2017 VENUE: Ramanujan Lecture Hall, ICTS Bangalore Particle accelerators have been instrumental in unraveling some of the deep questions related to matter at the fundamental level, the latest being discovery of the Higgs Boson. The conventional accelerators, how
From playlist Laser Plasma Accelerator
Talk given by ALPHA physicist Michael Charlton of Swansea University at the CERN Opendays 2013. To view this talk alongside the slides shown see http://cds.cern.ch/record/1604789. Watch more Opendays videos via this playlist: http://www.youtube.com/playlist?list=PLAk-9e5KQYEp1K0f5IA_6TqiwY
From playlist 2013: Talks from CERN Opendays
How do PET scans work to detect things such as cancer?
In this video, I discuss Positron Emission Tomography. In particular, I refer to the source of the positron, its annihilation and how the resultant gamma rays are collected. I also briefly discuss its diagnostic benefits. See more Medical imaging techniques here - https://www.youtube.co
From playlist Medical Physics
Lecture 6 of Leonard Susskind's Modern Physics concentrating on Cosmology. Recorded March 2, 2009 at Stanford University. This Stanford Continuing Studies course is the fifth of a six-quarter sequence of classes exploring the essential theoretical foundations of modern physics. The topi
From playlist Lecture Collection | Modern Physics: Cosmology
(February 25, 2013) Leonard Susskind examines one of the fundamental questions in cosmology: why are there more protons than anti-protons in the universe today? The answer lies in theory of baryogenesis in the very early universe. Originally presented in the Stanford Continuing Studies
From playlist Lecture Collection | Cosmology
017 Einstein-Podolski-Rosen Experiment and Bell's Inequality
In this series of physics lectures, Professor J.J. Binney explains how probabilities are obtained from quantum amplitudes, why they give rise to quantum interference, the concept of a complete set of amplitudes and how this defines a "quantum state". Notes and problem sets here http://www
From playlist James Binney - 2nd Year Quantum Mechanics
8. Radioactive Decay — Modes, Energetics, and Trends
MIT 22.01 Introduction to Nuclear Engineering and Ionizing Radiation, Fall 2016 Instructor: Michael Short View the complete course: https://ocw.mit.edu/22-01F16 YouTube Playlist: https://www.youtube.com/playlist?list=PLUl4u3cNGP61FVzAxBP09w2FMQgknTOqu Today we formally define the various
From playlist MIT 22.01 Introduction to Nuclear Engineering and Ionizing Radiation, Fall 2016
My Physics Senior Thesis Presentation
After talking about it for so long, I finally present my senior thesis research for undergraduate physics. I couldn't get both me and the presentation in the camera, so this had to do!
From playlist Daily Uploads
Alpha Decay, Beta Decay, Gamma Decay - Electron Capture, Positron Production - Nuclear Chemistry
This nuclear chemistry video tutorial provides a basic introduction into radioactive decay such as alpha decay, beta decay, gamma decay, electron capture and positron production. It contains plenty of examples and practice problems. Here is a list of topics: 1. Beta Decay of the Carbon-
From playlist New AP & General Chemistry Video Playlist
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From playlist Science Unplugged: Neutrinos