How to explain the size and heat of the sun at noon and morning in the debate between two children?

It is incorrect to explain the distance between the ground and the sun according to different feelings.

One of the children in the "Two Children Debate Day" said that the morning is far from noon because the sun is cold and the noon is hot. The other said that the sun is big in the morning and small at noon, so the morning is far from noon, and the fact observation is true. So how to explain it? What the hell is going on?

It seems that the sun is bigger in the morning than at noon because of the illusion of the eyes. The white figure we see is bigger than the black figure of the same size. This is called photodegradation in physics. When the sun rises, the surrounding sky is dark, so the sun appears bright, and at noon, the surrounding sky is bright. In contrast, the brightness difference between the sun and the background is not so big, which is why we look like the sun is bigger in the morning than at noon. In short, the sun is the same distance from us in the morning and at noon, so its size is the same.

In fact, because the solar radiation at noon is too strong, it is unrealistic to directly observe the size of the sun with the naked eye. This may also be caused by people's impression that the sun at noon is only a bright spot, while the sun at sunrise and sunset is an observable circle.

Also, it is hotter at noon than in the morning. Is it because the sun is closer to us at noon than in the morning? Not exactly. Why is this?

It is hotter at noon than in the morning because the sun shines directly on the ground at noon and obliquely on the ground in the morning. It can be seen that when the sun is in direct sunlight, the ground and the air receive more solar radiation heat at the same time and in the same area than when the sun is oblique in the morning, so they are heated the most. So it is hotter at noon than in the morning.

In fact, the hot and cold weather mainly depends on the temperature. The main factor affecting the temperature is determined by the radiation intensity of the sun, but solar photothermal is not the main reason for directly raising the temperature. Because the direct absorption of sunlight by air is only a small part of the total solar radiation, most of it is absorbed by the ground. After the ground absorbs the solar radiation heat, it is conducted upward to the air through radiation, convection and other heat transfer methods, which is the main reason for the temperature rise.

In short, it is not because the sun is far from our ground that it is hot at noon and cold in the morning every day.

When studying, maybe the teacher will say it's the same distance! There are two real answers! I want to know all about relativity! It is to compare at a point with a point as the center. In other words, there should be two central points in the text, one is the earth and the other is the area where the two children are located. If the earth is the center, then the distance between the sun and the earth is the same in the morning or at noon. If we focus on the area where the two children are located, it should be closer at noon. We all know that the sun and the earth are both spheres. Let's assume that the area where the two children are located is directly above the circle of the area, and the sun is assumed to be on the left side of the earth. At this time, the sun seen in the area where the two children are located is the morning sun. Just assume that the area where the two children are located is directly below the sun, then the sun at this time is the noon sun. The straight line between two points is the longest. At this time, it can be clearly known that when the area where the two children are located is the center point. The morning sun is farther away from the area where the two children are located than the noon sun. At that time, the two children didn't know the earth, so they centered on their own area. This can show who is right and who is wrong.