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3 Cards in this Set
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- Back
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luminosity
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an intrinsic property of a star. it does not depend in any way on the location or motion of the observer. it is sometimes referred to as the stars absolute brightness.
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brightness
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the amount of energy striking per unit area of some light sensitive surface (wha we can measure directly)
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brightness related to luminosity
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by an inverse square law.
brightness=luminosity/(4*pi*distance^2) |
