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this question has to do with astronomy

2006-11-12 11:38:38 · 4 answers · asked by kmas1983 1 in Science & Mathematics Astronomy & Space

4 answers

they're both the same thing luminosity is more of a measure of how bright a star or celestial being is. Not necesarrily to how we see it because farther things may appear to be less bright than close stars but may have a higher luminosity

2006-11-12 11:58:59 · answer #1 · answered by dragonslayer 2 · 0 0

Luminosity and brightness are NOT the same thing. Brightness, or apparent brightness, is how bright an object appears to be from a given view point. Luminosity is an objects intrinsic brightness if you will. It can be explained like this: Person A might be significantly taller than Person B, this is their luminosity. If Person B is much closer to you than Person A, Person B will appear to be taller, this would be brightness. In other words, brightness varies based on your view point, Luminosity is a constant as it is a value that is intrinsic to an object much like height is to a person.

2006-11-12 15:19:25 · answer #2 · answered by Matthew P 1 · 0 0

Hi. Brightness is how a bright a star APPEARS. Luminosity is how bright it actually IS. If all stars were the same distance away then their brightness and luminosity would appear the same.

2006-11-12 13:09:35 · answer #3 · answered by Cirric 7 · 0 0

You mean "luminosity"...no difference, both mean the same thing. if you hear someone say a star is very "luminous", it just means its very bright.

2006-11-12 11:46:28 · answer #4 · answered by Anonymous · 0 0

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