A star sometimes appears brighter and some other times fainter. What is this effect called? State the reason for this effect.
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A star sometimes appears brighter and at times fainter, this effect is called the "twinkling effect". The reason for this effect is atmospheric refraction.
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A star sometimes appears brighter and at times fainter, this effect is called the "twinkling effect".
The reason for this effect is atmospheric refraction. Our atmosphere is made up of different layers, therefore when the light emitting from the stars travels through these layers, it gets bent in different directions making the star twinkle.
...hope it's helpful :)
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