why do stars twinkling explain
tashi70:
coz there is turbulence in the atmosphere of Earth that's why star Twinkle
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6
Answer:
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The twinkling of
is due to the earth's atmosphere.
Stars twinkle as the light from the stars get refracted by the movement of the air in the atmosphere. This refraction cause slight changes in the brightness and position in the stars image, causing the twinkling of stars.
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The twinkling of
Stars twinkle as the light from the stars get refracted by the movement of the air in the atmosphere. This refraction cause slight changes in the brightness and position in the stars image, causing the twinkling of stars.
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3
1) As a star is far away from the earth , it appears as a point source of light . The density of a air decreases with height above the earth 's surface. Hence, the refractive index of air also decreases with height. When starlight enters the earths atmosphere, it undergoes refraction continuously in the medium with gradually changing refractive index.The bending of starlight occurs towards the normal as it passes from the optically rarer part of the medium.
2) Hence , when a star is observed near the horizon , it's apparent position is slightly higher than the actual position.
3) Thus there is fluctuation in the brightness of a star observed from the earth.This is called twinkling of star.
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