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During the time that the electromagnetic field was being quantized Planck came up with where h is Planck's constant and is wave frequency.
This was verfied experimentally via Compton scattering ...
Quote from: jeffreyHDuring the time that the electromagnetic field was being quantized Planck came up with where h is Planck's constant and is wave frequency.You have to be careful with this. It wasn't Planck who quantized the EM field. That happened when quantum field theory was created much later on. was postulated by Planck as the quantization condition for harmonic oscillators in a black body. It was Einstein who quantized the electromagnetic wave, i.e. light. Quote from: jeffreyH This was verfied experimentally via Compton scattering ...Compton scattering confirmed that light was made of particles.