WHAT IS THE SCIENCE BEHIND WHY THE SUN APPEARS RED DURING SUNRISE AND SUNSET?

The secret of this scientific process lies in Rayleigh scattering, Lord Rayleigh being the first British scientist to explain light scattering in the 19th century. Sunlight consists of all colors and this process occurs when sunlight enters the Earth's atmosphere and all the colors together make the sunlight bright white. All colors present in sunlight have different scattering abilities. All colors except red light are scattered or scattered and mixed into the light. Then the dust and soil particles collide and spread, but this does not happen at sunrise and sunset.

The rays of the sun have seven colors, of which the rainbow or vibgyor is formed. Its colors are purple, blue, green, yellow, orange and red. Red has the longest wavelength. This means that the red color can be seen from the farthest. When the sun rises or sets, it is farthest from our eyes, so its red color is clearly visible to us, while the other 6 colors are not visible due to distance.

What color is the Sun really, yellow, red or white?

If you are asked what color the Sun is, what will you answer? Of course, most people would describe it as yellow and some as red. But in reality the color of the sun is different. Former NASA astronaut Scott Kelly on Tuesday confirmed this space fact, that is, he told what color the Sun is. While on Earth, we see the Sun as yellow, because of the physics of light. For this reason the Sun appears yellow to us. But the true color of the Sun is actually white. The Sun appears yellow to us because of the Earth's atmosphere. But once you get out of Earth's atmosphere, the Sun appears white instead of a single colour. Actually, the sunlight mixes all the colors together, which appears white to our eyes, but this can be easily seen only in the pictures taken from space.

Light has an effect on the photoreceptor cells in our eyes. This brings all the colors together. When all the colors of light mix together, they end up in white. For this reason the Sun appears yellow, red or white on Earth and white in space. Earth's atmosphere plays a role in the color of the Sun. It allows our brain to perceive blue and yellow. Although it has no effect on our eyes. Whatever X-ray and gamma-ray radiation is in sunlight, it gets filtered before it gets close to the ground.

Why does the sky appear blue?

To understand why the sky appears blue to us, we first need to understand a little about light. White light from the Sun is actually made up of the spectrum of many different colors that we see spread out in a rainbow. Light is a wave of energy and different colors have all kinds of wavelengths. At one end of the light spectrum is red which has the longest wavelength and on the other side is blue and violet light which has very short wavelengths. When sunlight reaches the Earth's atmosphere, it It is dispersed, or deflected, by small molecules of gas (mostly nitrogen and oxygen) in the air. Because these molecules are so small compared to the wavelength of visible light, the amount of scattering depends on the wavelength. This effect is called Rayleigh scattering, named after Lord Rayleigh who first discovered it. Shorter wavelengths (violet and blue) are scattered most strongly,

so more blue light is scattered toward our eyes than other colors. You may wonder why the sky doesn't actually look violet because violet light More strongly scattered than blue. This is because sunlight doesn't have as much violet to begin with, and our eyes are more sensitive to blue.