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Results tagged with quantum-mechanics
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user 203069
Quantum mechanics describes the microscopic properties of nature in a regime where classical mechanics no longer applies. It explains phenomena such as the wave-particle duality, quantization of energy, and the uncertainty principle and is generally used in single-body systems. Use the quantum-field-theory tag for the theory of many-body quantum-mechanical systems.
2
votes
Why do electrons absorb and re-emit photons?
Imagine a cubic box at thermal equilibrium with a room a temperature $T$ and let's think that in this box there is an electromagnetic field (i.e. photons) and also a gas of atoms (i.e. fermions).
As …
- 434
2
votes
Do electrons have a radius when they behave like a particle?
As written above, electrons does have not radius according to the standard model prescriptions. Just for completness, an historical result about this, older that the standard model, is given by the so …
- 434
1
vote
What do positions in Schrodinger Equation mean (Remember: the particle never has definite po...
Pay attention, don’t confuse the uncertainly principle with something that is related to the wave-function: it is not!
The wave function $$\langle x | \psi \rangle = \psi(x)$$ is a complex number, mo …
- 434