How did Planck arrive at the idea that energy is quantized?
31703
How did Planck derive his formula $E=hf$?
117387
Can we safely assume $\Psi(x,t) = \psi(x)e^{-i\omega t}$ always in QM?
74065
Proof of de Broglie wavelength for electron
99735
Are there any theoretical limits on the energy of a photon?
22958
Is there such a thing as charge density in quantum mechanics?
80620
Do we have magnetic monopole? Is charge, according to yesterdays paper on Nature by Ray-Roukokoski-Kandel-Möttönen-Hall (30.01.14) quantized?
410
QM and Renormalization (layman)
33694
What is the real interpretation of Planck's constant and what are its origins?
115936
Is there a theorem that says that QFT reduces to QM in a suitable limit? A theorem similar to Ehrenfest's theorem?
66540
What is Quantization?
123948
Why do I not see evidence of discrete energy in the spectrum?
82441
Physical laws prior the big bang (quantum fluctuations)
47268
Is all angular momentum quantized?
112899
Final theory in Physics: a mathematical existence proof?
5810
What does it mean that particles are the quanta of fields?
90716
Conservation of energy and wavefunctions
34021
What is the physical meaning of a "complete" Hilbert space in QM?