Use the Luminosity Distance Formula. Find the distance to a star (L=2.2x1026 watts) whose apparent brightness at Earth is 2.0 x10-10 watt/m2. Formula: Absolute Brightness (AB) = Luminosity / 4π r
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Use the Luminosity Distance Formula. Find the distance to a star (L=2.2x1026 watts) whose apparent brightness at Earth is 2.0 x10-10 watt/m2. Formula: Absolute Brightness (AB) = Luminosity / 4π r2
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