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jan 1, 140 - Advanced in the theory of epicycles

Description:

He redefined the deferent-and epicyle-consept and introduced the equant as a mechanism for accounting for velocity varyations in the motions of planets.

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The scientific resolution timeline.

ByCarter Hamby
12 Dec 2019
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Date:

jan 1, 140
Now
~ 1887 years ago
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