Tag: Johannes Kepler
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The history of eyeglasses
Efforts to improve vision date back to the ancient civilizations of India and China. Greek scholars such as Ptolemy and Euclid endeavored to understand the physics of light refraction, the mechanisms of lenses, and how their properties can enhance vision and literacy. The Romans magnified the letters they were looking at by placing reading stones…
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Nature telling her secrets: the Kepler–Descartes connection
Ronald FishmanChicago, Illinois, United States Nature tells us one secret in terms of another, and she may refuse to disclose one secret until another has been laid bare.– T.S. Kuhn1 In 1604, Johannes Kepler solved the problem of how light is refracted within the eye to produce an image on the surface of the retina. This problem…