Why is the sun reddish in the morning and evening, but white at noon? Is it not enough motivation?

It's not that there isn't enough power, it's because the sunlight is blocked by the atmosphere as it travels from far away space to the earth, so the sun is reddish in the morning and evening, and white at noon.

This is mainly because the sunlight is scattered in the atmosphere, because the thickness of the atmosphere through which the sunlight passes through sunrise and sunset is different from that at noon, so it will show different colors.

Sunlight is composed of seven colors of light: red, orange, yellow, green, blue, indigo, and violet. Red light has the greatest ability to pass through the atmosphere, followed by orange light, and other light. In the early morning and evening, when the sun is close to the horizon, the sunlight has to travel diagonally through the atmosphere and travel a long way to reach the ground.

Only the red light and some orange light, which have the greatest penetrating ability, can succeed, while other colors of light, such as blue light and purple light, are gradually scattered by the atmosphere. So, at sunrise and sunset, the sun looks red.

In the morning and evening, the sun is close to the horizon, the sunlight crosses the atmosphere along the horizon, and then the blue light is scattered, and the eyes see the red light, and at noon, the sunlight passes vertically through the atmosphere, the distance through is shorter, the scattering of various colors is less, and the sunlight appears white.

This is because of the atmosphere, and the situation in the atmosphere is different at different times, so this situation occurs.

Sunlight is a mixture of all colors and is generally white. The entire earth is surrounded by a thick atmosphere with many gases, dust, water vapor and pollutants emitted by various vehicles, as well as other impurities. When sunlight passes through these substances, these objects act like prisms scattering seven different colors.

As the sun rises and sets, sunlight travels a longer distance through the atmosphere, and the sunlight is obliquely on the ground, and it passes through a much thicker atmosphere than at other times. Matter in the atmosphere is scattered in two colors: red and yellow. In this way, we see a reddening sun sooner or later.

Because the angle of the sun in the morning and evening is smaller than the angle at noon, the light passes through in the morning and eveningAtmosphereThe refractive index is large, and the seven primary colors of the morning and evening sun through the atmosphere are basically blocked by scattering, leaving red light, so the morning and evening sun is redder. These problems have to do with light and the refraction of light.

The scattering angle. Because of the different angles, the sunlight is caused by various time periods.

The colors are different. <>

In fact, sunlight is neither white nor red, but is composed of seven colors: red, orange, yellow, green, blue, indigo, and violet. The plan of the day is in the morning.

In the morning, I use the earth as a frame of reference.

The sun is below the horizon.

The refraction occurs when the sunlight begins to enter the atmosphere, and the angle of incidence is the same, but the atmosphere is weaker in refraction of red light, the angle of refraction.

When I was young, the refraction angle of purple light was large, and the red light that hit the ground was more than the other six colors, resulting in more red light in the human eye, so the morning sun looked red in our eyes, and the principle was the same in the evening and in the morning. At noon, the direct sunlight has a small pathlength and the seven colors of light are scattered, so we look like the sun is white at noon.

Although the atmosphere is colorless and transparent, it contains countless gas molecules, namely dust and small water droplets. In addition to the red light and orange light, the other colors of the sun's light are blocked by these impurities, and the thicker the atmosphere through which the sun's light passes, the more other colors of light are blocked. The remaining red and orange light then shines through small water droplets and dust onto the ground, so the sunlight appears orange-red.

On the surface of the sea, because there are more small water droplets, not only blocking other colored light, but also blocking orange light, resulting in only red light passing through the obstacle refraction, so the sunlight on the sea surface is particularly red.

So the change in cold and warm, the size of the sun seen, the change in colorSun-Earth distanceIt doesn't matter how far or near it is, but it has to do with the sun's rays and angles.

It's all together in the morning, so it's very red. It's spread out at noon, and there isn't much color. But there are also some together at night, and naturally they are not very popular.

The thickness of the cloud cover is different in each time period, and the temperature will affect the color of the sunlight scattered, and the color in the morning and evening is actually very close, probably because the environment is about the same.

In fact, this is a sun, and he must feel that the distance is related, and his direct sunlight is relatively far away in the morning and evening, so the strength is weaker and the color is different.

It is mainly caused by the refraction of sunlight in the atmosphere, the refraction angle is small in the morning and evening, there is more red light, and there is no difference in light refraction when irradiated vertically at noon.

Because it depends on the clouds in the sky or a certain galaxy, it shows different surfaces, and its location in the atmosphere is also different.

It is determined by the nature of sunlight, but it will be affected by the environment.

There is also a difference between the sunlight seen on Earth and Mars, and it is also related to the material and thickness of the Pacific Atmosphere. Sunlight is composed of red, orange, yellow, green, blue, violet, and seven colors of light, and the composite light is white light.

At sunrise and sunset, the atmosphere on the horizon is generally 35 times thicker than during the day, when the sun is at its head, and the sunlight is scattered by a large number of air molecules in the atmosphere, leaving very little violet and blue light with shorter wavelengths. The rest is only red, orange, and yellow light with longer wavelengths, which are scattered by air molecules, water vapor, dust, etc., on the horizon, and look even more fiery red. Sunlight is at its thinnest in the atmosphere at noon, closest to white, and ultraviolet rays are strongest.

Therefore, sunlight is affected by the environment, not only the sunrise and sunset on the earth are different, but the sunlight seen on each planet is also very different, not static.

In fact, most of the suns we see every morning and evening are not on the horizon, and the horizon blocks the sun. You may ask, since it is blocked by the horizon, how can we see the sun? That's because of atmospheric refraction.

When the light passes through two media with different densities, it will deviate to the denser side, vacuum, rarefied atmosphere, normal atmosphere, this density gradually increases, and the sunlight is biased towards the ground, so we see the sun in the morning in advance, and in the evening the sun has set the horizon and we can still see it. In this refraction stage, some bands of light are absorbed, and the remaining ones that are not easily absorbed are yellow and red light waves. As for the phenomenon of refraction, it is often seen that for example, a fish in the water, you think it is in front and below, but in fact it is closer to you.

Thank you! If there is something wrong, please correct me.

In the morning and evening, sunlight needs to pass diagonally through the atmosphere to reach the ground, and it travels longer distances in the atmosphere, so it is more likely to be diffused, scattered and absorbed. Of all the wavelengths of visible light, red light, which has the longest wavelength, is the most penetrating, so the loss of light of other colors is greater than that of red light when it passes diagonally through the atmosphere, and it appears reddish compared to direct light.

When the sun is above us, the color is close to its true color. At this time, the light rays are perpendicular to the atmosphere, so that the light rays are least blocked by air molecules, so there is the least change in the clear weather of our eyes, so it looks yellowish-white.

There is no sun at night, but it is golden in the evening, right?

1.The altitude angle of the sun in the morning or evening is the minimum of the day, and the sun's rays are oblique when they reach the observation point, and the thickness of the atmosphere through which is the maximum of the day. The atmosphere weakens solar radiation, mainly through reflection, scattering, and refraction, which makes the weakened sunlight feel much dimmer.

The atmosphere scatters the shorter wavelengths of the sun's rays, blue-violet light, and as a result, our sky appears blue, which is the result of scattering some of the sun's light. In the morning and evening, the atmosphere is thickest and scatters blue-violet light the strongest, while the longer wavelength of red-orange light penetrates the most and can pass through the atmosphere to be seen by humans. Therefore, the morning and evening sun is not only weaker, but also red, orange, and yellow.

2.At noon, the solar altitude angle is the maximum value of the day, the distance of light to the surface is also the shortest, and the weakening effect of the atmosphere is also the weakest, so the sun rays are the strongest at noon, and the white light seen is often said to be visible light, in fact, it is not white, it is composed of red, orange, yellow, green, blue, purple, seven colors, with a physical prism in the sun, the seven colors can be separated, and the seven colors of the rainbow are the same.

If you are not sure, you can continue to ask.

Because sunlight is composed of seven types of light, of which red light can travel the farthest, and the others are refracted by the air halfway.

The air is thicker than the air in the air, and since the morning and evening sun shines sideways, passing through the air near the ground, all other light is refracted, and only the red one comes through. So the traffic lights are red for people to see from afar and in the fog.

During the first day, the sun shines vertically, penetrating less clouds and less air, so the light of the seven kinds of eggplant beams is transmitted, and it is white.

The angle and wavelength of the sun are small when the sun rises in the morning and sets in the evening, and the wavelength of the red color appears after passing through the atmosphere.

Due to the scattering effect of air on light rays. Scattering occurs when sunlight hits the atmosphere and encounters atmospheric molecules and particles suspended in the atmosphere.