If one knew the luminosity of a star and measured its apparent brightness, which expression would one use to calculate the distance to the star

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20-04-2022
Physics

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If one knew the luminosity of a star and measured its apparent brightness, which expression would one use to calculate the distance to the star

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adefioyelaoye adefioyelaoye · Answer 1 · 2022-04-28T11:27:27+02:00

The expression which one would use to calculate the distance to the star is distance = sq. root. of (luminosity/4pi*apparent brightness)

What is Distance?

This is a scalar quantity and refers to how much ground a body has covered.

In a situation where parameters such as luminosity of a star and measured its apparent brightness are known then the distance to the star will be:

Distance= √(luminosity/4pi*apparent brightness)

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