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Who Created the Inverse Square Law Theory
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[QUOTE="SteamKing, post: 5446569, member: 301881"] The ISL was known long before Newton came along, and not only in connection with gravitational concepts: [URL]https://en.wikipedia.org/wiki/Inverse-square_law[/URL] The earliest indication from history is that the ISL could explain an observed physical phenomenon came from Oxford in the mid-14th century concerning the intensity of illumination. Later, the concept was picked up by other scientists, including Kepler, who suspected but could not prove that planets in orbit about the sun obeyed an ISL with respect to the force of attraction between them. Other scientists in England, including Robert Hooke, Christopher Wren, and Edmond Halley, also subscribed to the idea of gravitation obeying the ISL, but it was Newton who showed that by calculation, the assumption of the ISL for gravity led directly to Kepler's laws of motion, and this astonishing result formed the basis for Halley to urge a reluctant Newton to write the [I]Principia[/I]. [/QUOTE]
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