Michael P. answered • 08/04/19
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PhD in Chemistry - Application of Physics to Chemical Systems
Modern (quantum) physics started in 1900 when Planck accurately predicted the wavelength (frequency) dependence of blackbody radiation using the hypotheses that the energy of the atomic oscillators in the blackbody and the energy radiated by the blackbody appears in packets (quanta) proportional to the frequency of the radiation: Eosc = n*h*freq and deltaErad = h*freq
