Atmospheric Refraction
Important Questions on Atmospheric Refraction
How does the refraction take place in the atmosphere? Why do stars twinkle but not the planets?
How can we explain the reddish appearance of sun at sunrise or sunset? Why does it not appear red at noon?
What is the difference in colours of the sun observed during sunrise/sunset and noon? Give explanation for each.
Why is the colour of the clear sky blue?
Is the position of a star as seen by us its true position? Justify your answer.
The bluish colour of water in deep sea is due to
Which of the following phenomena contributes significantly to the reddish appearance of the sun at sunrise or sunset?
The danger signals installed at the top of tall buildings are red in colour. These can be easily seen from a distance because among all other colours, the red light
The clear sky appears blue, because
Twinkling of stars is due to atmospheric
At noon the sun appears white as
