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Greek Alphabet Fundamental constants: Useful conversions:
Greek Alphabet Fundamental constants: Useful conversions:

... O ψ = ϕ ; O !"c ψ #$ = c ϕ ; O !" ψ1 + ψ 2 #$ = O ψ1 + O ψ 2 . A vector ϕω is called an eigenvector of an operator O with eigenvalue ω (=complex number) IF O ϕω = ω ϕω . Observables are represented by (Hermitian) operators Ω with only real eigenvalues ωi. Any measurement of the observable must give ...
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... 1. A quantum of electromagnetic radiation is a a. wave function. b. photon. c. de Broglie wave. d. laser. e. hologram. 2. The energy associated with a photon of blue light is _____ the energy associated with a photon of red light. a. greater than b. less than c. equal to d. unrelated to 3. An excite ...
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Optical tests of quantum electrodynamics - LNCMI-Toulouse

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... What is the significance of diagonalizing a matrix? The diagonal values are eigenvalues. Diagonalization provides a better choice of variables and thus amounts to a simplification of the problem. (Boas 150) (UH2O) * It is hard for me to see the difference between a linear operator and just some term ...
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... Moodle. I’ll be reading it and answering questions so that everyone can have access to the questions/answers. Assignments: will be given posted on the website every week. Solutions will be posted after 2 weeks. There is no requirement to hand them in or even try to solve them, but.... if you do not ...
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large electrostatic forces would exist, for which the potential energy
large electrostatic forces would exist, for which the potential energy

... One of the most important situations in which charge neutrality does not prevail is in the region of a partially ionized gas immediately adjacent to a solid surface. Such regions are referred to as sheaths. The relevant macroscopicscalehere being the distancefrom the surface,we may anticipate that t ...
Photon Wave Mechanics: A De Broglie-Bohm Approach
Photon Wave Mechanics: A De Broglie-Bohm Approach

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Quantum electrodynamics



In particle physics, quantum electrodynamics (QED) is the relativistic quantum field theory of electrodynamics. In essence, it describes how light and matter interact and is the first theory where full agreement between quantum mechanics and special relativity is achieved. QED mathematically describes all phenomena involving electrically charged particles interacting by means of exchange of photons and represents the quantum counterpart of classical electromagnetism giving a complete account of matter and light interaction.In technical terms, QED can be described as a perturbation theory of the electromagnetic quantum vacuum. Richard Feynman called it ""the jewel of physics"" for its extremely accurate predictions of quantities like the anomalous magnetic moment of the electron and the Lamb shift of the energy levels of hydrogen.
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