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Review for Chapter 3: Atoms, Electrons and Periodic Trends Text
Review for Chapter 3: Atoms, Electrons and Periodic Trends Text

... that the packages of energy were actually photons (particles) of light. 4d) Heisenberg stated the Uncertainty Principle and showed mathematically that it is impossible to know both the position (energy) of an electron and its momentum (where it is going) at the same time. This meant that Bohr’s mode ...
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... not. (c) To release energy from a Uranium nucleus, would you use fission or fusion? Explain using the nuclear binding energy curve. Uranium nuclei are on the right of the peak in the binding energy-pernucleon curve. Thus, if we use fusion, we’ll make a bigger nucleus which will be less tightly bound ...
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... intrinsic semantic difficulty of the word ‘particle’, at a quantum scale, our conceptualization of things leads us to maintain this word to name the basic quantum objects, even though we realize they are not particles strictly speaking. So we stole the word particle from classical physics aware of t ...
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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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