Which phenomenon makes us see the sun : (a) a few minutes before actual sunrise ? (b) a few minutes after actual sunset ?
Which phenomenon makes us see the sun :
(a) a few minutes before actual sunrise ?
(b) a few minutes after actual sunset ?
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2 Answers
ATMOSPHERIC REFRACTION
By actual sunrise, we mean the actual crossing of the horizon by the Sun. The time difference between actual sunset and the apparent sunset is about 2 minutes. The apparent flattening of the Sun’s disc at sunrise and sunset is also due to the
same phenomenon.
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