11 books
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7 voters
Optics
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54. Long before either wave or particle, some (Pythagoras, Euclid, Hipparchus) thought that our eyes emitted some kind of substance that illuminated, or "felt," what we saw. (Aristotle pointed out that this hypothesis runs into trouble at night, as objects become invisible despite the eyes' purported power.) Others, like Epicurus, proposed the inverse--that objects themselves project a kind of ray that reaches out toward the eye, as if they were looking at us (and surely some of them are). Plato
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― Bluets
― Bluets
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The way they talked about what happened, Mary said, was almost more important than what had happened.
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― Truly Like Lightning
― Truly Like Lightning
