David Rittenhouse – författare

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2 produkter

1. 

   An Oration, Delivered February 24, 1775, Before the American Philosophical Society, Held at Philadelphia, for Promoting Useful Knowledge.

   Av David Rittenhouse

   Häftad

   227 kr

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2. 

   1769: Transit of Venus

   American Philosophical Society Essays

   Av David Rittenhouse, John Ewing

   Häftad, 2012

   445 kr

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   The ToV occurs when Venus's orbit causes the planet to speed past the slower moving Earth and visibly cross the Sun, partially obscuring it. The ToV occur in pairs that are 8 years apart and tend to be separated in time by just over a century. The first person to predict and observe the ToV was …