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According to the inverse square law of light how will the apparent brightness of an object change if its distance to us changes to one half as much as it was.?
Euronew
If the brightness is 'B' right now, when the object is at a distance 'D' from your eye, then
-- If the object moves closer, to only [ 1/2 D ] from you, the brightness increases to [ 4 B ].
-- If the object moves farther away, to [ 2 D ] from you, the brightnesses decreases to [ 1/4 B ].
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∙ 14y ago
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A star whose brightness changes?
A star who's brightness changes is called a variable star.Examples are:AlgolPolarisBetelgeuse.See related link for more information.
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The apparent magnitude of Mercury varies because its brightness changes as it moves in its orbit about the sun. And the earth, from which we view Mercury and make a determination as regards it apparent magnitude, moves as well. It varies from -1.9 to 5.5 as we see it. (Some sources hold a -2.0 as a lower limit.) A link can be found below.
Who discovered how to predict changes in the brightness of Cepheid variable stars?
malay ko...
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A star whose brightness changes?
A star who's brightness changes is called a variable star.Examples are:AlgolPolarisBetelgeuse.See related link for more information.
How do you calculate the distance of nebulae?
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How does brightness change as magnification changes?
Hello
How do you measure the distance to a star?
Several methods exist. A fairly obvious one is the parallax method - while Earth moves around the Sun, it changes its position by about 300 million km.; this will change the apparent position of nearby stars. For star clusters or galaxies that are further away, several "standard candle" methods exist, which basically consist of comparing the real luminosity of objects that have a known brightness (like certain types of stars) with their apparent luminosity.
What is the moon's apparent magnitude?
The apparent magnitude of Mercury varies because its brightness changes as it moves in its orbit about the sun. And the earth, from which we view Mercury and make a determination as regards it apparent magnitude, moves as well. It varies from -1.9 to 5.5 as we see it. (Some sources hold a -2.0 as a lower limit.) A link can be found below.
Which changes would changes would correspond to a decrease in a star's absolute brightness?
A decrease in the star's temperature
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Who discovered how to predict changes in the brightness of Cepheid variable stars?
malay ko...
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