Bradley Discovers Nutation
02/14/1748 AD discovered
Similar to precession, in that the same forces are the cause, nutational effects are much shorter term variations.
Important because the position of the stars are measured using the equator as a point of reference -- But this reference is constantly changing!
Bradley had 20 years of continuous data from which he drew his conclusions.
Subjects Who or What discovered?
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James Bradley While searching for stel...
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