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Atoms liberate light which has definite frequencies, something like the timbre of a musical instrument, which has definite pitches or frequencies of sound.
— The Feynman Lectures on Physics: vol. 1, 3-6
Atoms liberate light which has definite frequencies, something like the timbre of a musical instrument, which has definite pitches or frequencies of sound.
— The Feynman Lectures on Physics: vol. 1, 3-6