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Feynman, item 1, about light, corpuscles, particles.   Share:  
Thrust of argument: This is Feynman lecture notes item 1. Direction of resistance / implied resistance: Feynman tells us Newton felt that light was made of corpuscles, particles, not waves.


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Removal of resistance: Newton's reasoning was wrong, but he was right that they are particles. Unification: Feynman explains that you can demonstrate by seeing different intensities of light being measured with a photo-multiplier. When measuring dim light with a photo multiplier, the energy came in 'lumps', rather than a tiny bit dribbling in all the time. Lumps, separated by gaps. So it became very clear that light is corpuscular, light consists of particles, not waves, as some long after Newton came to theorise, wrongly.
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