This only makes sense if the photon exists, there is no classical analogue, because the energy of classical waves depends only on their amplitude, not frequency.
Experiments that suggest this:
- Planck's law | 118, 452, 4
- Black-body radiation experiment | 33, 502, 6
- Quantum mechanics experiments | 36, 2k, 26
- Quantum mechanics | 170, 18k, 245
- Particle physics | 137, 28k, 449
- Physics | 276, 39k, 680
- Natural science | 0, 48k, 1k
- Science | 0, 52k, 1k
- Ciro Santilli's Homepage | 262, 181k, 3k
- Compton scattering | 122
- Hydrogen 1-2 spectral line | 82
- Photoelectric effect | 56
- Planck constant | 163, 258, 2
- Spontaneous parametric down-conversion | 380