Tycho Brahe and Kepler - for the general leading the...

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Tycho Brahe Danish nobleman and Scientist He also was something of a professional student (college years 1559-1570) Lost his nose in a duel…. His contribution was as a matchless observer and recorder of his observations. In his old age he quarreled with his patron and moved to Prague as Imperial Mathematician (i.e. astrologer) to the Holy Roman Emperor He had a young assistant, Kepler Kepler German astronomer and mathematician Son of a soldier and an innkeeper’s daughter…. Entered University to study for the Lutheran ministry. Succeeded Brahe as Imperial astrologer He was deeply religious and actually strongly believed in the predictive power of astrology
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After a change of Emperors, Kepler found himself as a “field astrologer” casting horoscopes
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Unformatted text preview: for the general leading the Catholic army during the 30 years war. Kepler’s mathematical skill, together with Brahe’s observational records solved the problem of the shape of the solar system Right from the start it was clear to Kepler that only a Sun-centered system would explain the observations. BUT, his first insight was that orbits were not circular….they were ellipses Kepler’s Laws Law #1. Each planet moves in an ellipse with the Sun at one focus. Law #2. The line between the Sun and the planet sweeps over equal areas in equal time intervals Law #3: The square of the orbital period of a planet (in years) is directly proportional to the cube of the semi-major axis of its orbit (in AU). a3 = P2...
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