Information AboutHarmonice Mundi |
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According to Kepler, each and Perihelion , and Venus only varies by a tiny 25:24 interval. Kepler explains the reason for the Earth's small harmonic range: :The Earth sings Mi, Fa, Mi: you many infer even from the syllables that in this our home misery and '''fa'''mine obtain. At very rare intervals all of the planets would sing together in perfect concord: Kepler proposed that this may have happened only once in history, perhaps at the time of creation. In his previous book '' Astronomia Nova '', Kepler had put forward the first two Laws Of Planetary Motion . The third law, namely the proportionality of the cube of the average distance of a planet from the sun and the square of the length of its year, was set out in Chapter 5 of this book, immediately after a long digression on Astrology . REFERENCES
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