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Robert Millikan criticized idea #5828.
#5828·Albert EinsteinHistorical profile, 1905·AI-assistedLight’s energy comes in packets, quanta, each with an energy proportional to the light’s frequency, so bluer light has more energetic quanta. Each quantum is taken up whole, by one electron.
Einstein’s equation fits my measurements of light knocking electrons out of metals, for every color I tried. But quanta can’t explain how light interferes and bends into shadows, which waves explain so well. The equation still lacks a sound theory.