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Physics 432: Electricity and Magnetism
Physics 432: Electricity and Magnetism

Lecture 9
Lecture 9

Physics 432: Electricity and Magnetism (Dr. Thomas Callcott)
Physics 432: Electricity and Magnetism (Dr. Thomas Callcott)

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... Interpretations from the data: 1. There are no values on the y axis in the tables above. Using the Periodic Table and Table 1, put numbers on the y axis. 2. Label each peak on the graphs above with s, p, d, or f to indicate the suborbital ...
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... of the electrons as moving around the nucleus in an area called an electron cloud. The energy levels occur because electrons in the cloud are at different average distances from the nucleus. ...
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... If one of the slits in a double slit experiment is closed, one sees only a diffraction pattern from a single slit (P1). If the other slit is opened and the first one closed, one sees only the diffraction pattern from the other slit (P2). If both are opened, one does not simply see the sum of P1 and ...
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... Light sometimes exhibits wave-like properties (interference), and sometimes exhibits particle-like properties (trajectories). We will soon see that matter particles (electrons, protons, etc.) also display both particle-like and wave-like properties! An important question: When should we expect to ob ...
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Chapter 7 - Gordon State College

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... To determine the impulse, we need to determine the time that the force interacts. We will assume that the force stays at its maximum value for the time required for the alpha to travel across the diameter of the gold atom. This is an approximation but it should over-estimate the alpha deflection and ...
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... To determine the impulse, we need to determine the time that the force interacts. We will assume that the force stays at its maximum value for the time required for the alpha to travel across the diameter of the gold atom. This is an approximation but it should over-estimate the alpha deflection and ...
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Lorentz Invaiance Violation and Granularity of space time

... According to the GR view, COW experiment & the experiments with neutrons at Grenoble are ``just” tests of QM in a non inertial frame… but gravity lies only in the curvature, i.e. in the fact that inertial frames at different events do not coincide. Other tests, such as those using Quantum Gravity gr ...
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... box, and only orbitals after the last filled noble gas are shown. To do these diagrams, you need to know one more principle. Hund’s rule states that when electrons are being placed in a set of orbitals, they must be placed singly with the same spin before beginning to pair them up. A set of orbitals ...
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... Fundamental interactions are described by Quantum Field Theory (QFT), with exchange particles. The standard model (SM) of particle physics is a QFT describing three different interactions: Electromagnetic, strong and weak. Same formalism, but different constants. Are the three SM forces different, l ...
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Winterschool Obergurgl 2017
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< 1 ... 434 435 436 437 438 439 440 441 442 ... 514 >

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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