Excite hydrogen with lower frequency photon
20997
Can an electron jump to a higher energy level if the energy is insufficient or exceeds the $\Delta E$?
51802
What is the frequency of a photon?
79842
Why do accelerating electrons emit radiation?
98091
Can an LC oscillator be used to generate visible light?
49047
Redshifted Photon Energy
115378
Is it possible to generate electric energy from the radiation of radioactive materials
69983
Photon energy - momentum in matter
143758
Shine a light into a superconductor
54548
Expectation value for $\frac{1}{r}$ in the $|nlm\rangle$ state of hydrogen
112625
Reduced mass in quantum physics (Hydrogen Atom)
36263
Prove that an electron in a hydrogen atom doesn't emit radiation
121564
Why doesn't saturation current in the photoelectric effect depend on the frequency of light absorbed ny the metal emitter?
27803
Why are photoelectrons emitted in the direction of incident photons?
136003
Existence of monochromatic pulses?
15767
Can a free particle absorb/emit photons?
35481
Photoelectric effect intensity
67870
Radio antenna producing waves in the visible spectrum