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The sky is reddish when the sun rises or sets.
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Bobo.id – If you look at the sky, you will definitely notice that the sky will turn reddish when Sun rise.
Likewise, when the sun is setting, a reddish color will appear in the sky.
This phenomenon is called Rayleigh scattering, this phenomenon is also what causes the sky to be blue during the day.
Rayleigh scattering is the state when light with short waves is scattered more than light with long waves, when it meets small particles in the air.
This phenomenon was discovered by a physicist from England named John William Strutt or Lord Rayleigh.
Then, why does the sky turn red when the sun rises and sets? To find out, see the following explanation, come on!
1. Made of Different Colors
Because the rays emitted to the earth by the sun include electromagnetic radiation, it is called visible light.
Electromagnetic radiation itself is a combination of electric and magnetic fields, which propagate through a vacuum.
This visible light looks white but is made up of different wavelengths of color, namely blue, purple, and indigo (short waves) and red and orange (long waves).
Therefore, sunrise or sunset makes a reddish glow.
This is because the sun is farther away and its light must pass through the thicker atmosphere.
The short wave light first scatters in all directions, while the long wave light can reach the layers of the earth’s atmosphere.
2. Earth’s Atmosphere
As explained earlier, if this visible light will propagate through the atmosphere.
The thickness of the atmosphere that must be penetrated also affects the color of the sky on earth.
Earth’s atmosphere itself consists of 21 percent oxygen, 78 percent nitrogen, ice crystals, steam, and others.
3. Dust and Pollution
Also Read: Produce Light and Heat Energy, Here Are 6 Benefits of Solar Energy for Humans
Air quality also affects why the sky turns reddish when the sun rises or sets.
This is because, dust particles and pollutants tend to reduce the color in the sky and block light from reaching the earth.
As a result, the sky will be a dull reddish color when the air is full of dust and pollution.
That is why, if you observe, the reddish color of the sunrise or sunset will be more beautiful in the countryside than in the cities.
Well, that’s the reason why when the sun rises and sets the sky turns reddish.
This is actually the same when there is a lunar eclipse.
Lunar eclipses also cause a reddish tint, a result of the propagation of visible light, the atmosphere, and dust and pollution.
Watch this video, come on!
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