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प्रश्न
Why does sun appear red at sunrise and sunset?
Why does the Sun appear red at sunrise?
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उत्तर १
At the time of sunset or sunrise, the Sun and its surroundings appear red because of the scattering of light. At the time of sunset or sunrise, the light rays from the Sun have to travel a long distance to reach our eyes through the Earth's atmosphere. In other words, we can say that when we look towards the horizon, we are looking through more of Earth’s atmosphere than when we look overhead. The light reaching our eyes is rich in red color as blue light is largely scattered away by the particles present in the Earth's atmosphere.
उत्तर २
At sunrise, the sun is near the horizon; hence, sunlight has to travel a longer distance through the atmosphere to reach us. During this journey, most of the blue colour present in sunlight, which is of shorter wavelength, gets scattered from our line of sight. Thus, the red colour present in sunlight, which has a longer wavelength and is scattered the least, reaches our eye. As we see red light everywhere above, the sun and the surrounding sky appear red at sunrise.
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संबंधित प्रश्न
What did Newton demonstrate by his experiments with the prism?
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which reflect all the colours in sunlight
Name the phenomenon due to which the stars seem higher in the sky than they actually are.
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The scattering away of red light makes the sky appear blue during the day time.
When sunlight enters the earth’s atmosphere, state which colour of light is scattered
- the most and
- which the least.
The clear sky appears blue because:
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Twinkling of stars is due to atmospheric
Blue colour of sky is due to the phenomenon of
