PDF Slides - UMBC
PDF Slides - UMBC
PDF Slides - UMBC
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[Image Credit: Pearson Education]<br />
View from “above”<br />
the ecliptic<br />
Sun<br />
Earth<br />
Solar Day is longer<br />
than Sidereal Day<br />
since Earth has to<br />
rotate an extra ~1 O<br />
obviously!<br />
360 O orbit of Earth<br />
takes ~365 days<br />
hence Earth moves<br />
~1 O per day<br />
around orbit<br />
.. But Note:<br />
fact that Earth’s spin is in same sense<br />
as Earth’s orbital motion<br />
(ie counterclockwise when view from “above”)<br />
24 × 60<br />
also that ~ 4 min<br />
365<br />
Ian M. George PHYS 304 (2011 Fall) Meeting 04
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