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Physics 9 Online
OpenStudy (anonymous):

A measure of the amount of light given off by a star is its _____.

OpenStudy (anonymous):

Brightness?

OpenStudy (anonymous):

Not really a physically strong word :) If you need an exact definition check your physics book.

OpenStudy (shane_b):

This should help: http://en.wikipedia.org/wiki/Luminosity Technically the answer is luminosity but since we're talking about stars here the answer your teacher is probably looking for is apparent magnitude. Check with your book.

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