If the distance between us and a star is doubled, with everything else remaining the same, the luminosity.

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25-10-2022
Physics

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If the distance between us and a star is doubled, with everything else remaining the same, the luminosity.

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fawadmohd fawadmohd · Answer 1 · 2022-11-04T12:48:51-04:00

If the distance between us and a star is doubled, with everything else remaining the same, the luminosity, but the apparent brightness is decreased by a factor of four.

Luminosity is the term used to describe the total energy produced by various celestial bodies (stars, galaxies) in a certain amount of time. It is primarily measured in joules per second or watts in SI units. The radiant power emitted by a light-emitting item is defined as luminosity, which is the absolute measure of electromagnetic power (light).

The absolute bolometric magnitude of an object, also known as luminosity, is the unit used to describe the rate of total energy emission and is expressed in terms of the luminosity of the sun. By using the absorption method and heating measurement, a bolometer can be utilized to quantify radiant energy.

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