IndiaBIX

General Knowledge - Physics - Discussion

Discussion Forum : Physics - Section 1 (Q.No. 33)
Physics
33.
Stars twinkle because
the intensity of light emitted by them changes with time
the distance of the stars from the earth changes with time
the refractive index of the different layers of the earth's atmosphere changes continuously, consequently the position of the image of a start changes with time
the light from the star is scattered by the dust particles and air molecules in the earth's atmosphere
Answer: Option
Explanation:
No answer description is available. Let's discuss.
Discussion:
13 comments Page 2 of 2.
Kishore kumar said:   1 decade ago
Stars do not really twinkle, they just appear to twinkle when seen from the surface of Earth. The stars twinkle in the night sky because of the effects of our atmosphere.
Sunil bhatara said:   1 decade ago
When the light came from stars and reaches the earth's atmosphere due to the presence of different layers in earth's atmosphere. Some time light reaches our eyes or some time not.
Mallesh said:   1 decade ago
The scientific name for the twinkling of stars is stellar scintillation (or astronomical scintillation). Stars twinkle when we see them from the Earth's surface because we are viewing them through thick layers of turbulent (moving) air in the Earth's atmosphere.
Post your comments here:

Your comments will be displayed after verification.

Quick links
Quantitative Aptitude
Verbal (English)
Reasoning
Programming
Interview
Placement Papers