When is the sun coming in and when is it far away?

The second pair. Ignoring the revolution of the earth and considering only the rotation, from the center of the sun to a fixed point on the earth's surface, the distance must be long in the morning and short at noon. It's just that this change in distance is not enough to cause hot at noon and cool in the morning, and the hot at noon and cool in the morning is caused by the angle of incidence of the sun, not the truth mentioned in "Two Children's Debate".

Uh, there's one more answer

The farthest place to reach the sun is in July every year.

The Earth's orbit around the Sun is elliptical rather than a standard circle. Every year on the first day of July, we reach the farthest point in orbit from the Sun. So why was it so hot at that time?

In fact, there is not much difference between the impact of the Earth being "close to the Sun" and "being far from the Sun" on the Earth's climate.

The sun is the same distance from the earth in the morning and at noon. Why does the sun look bigger in the morning than at noon? It's a visual error, an illusion.

The same object, placed in a group of objects larger than it, appears small, while placed in a group of objects smaller than it appears large. In the same way, the morning sun rises from the horizon against the backdrop of trees, houses, distant mountains and a small corner of the sky, and in this comparison, the sun appears larger. At noon, when the sun rises high and the vast sky is the backdrop, the sun appears smaller.

Secondly, the white part of the same object appears larger than the black one, and this physical phenomenon is called "photoosmosis". When the sun is rising, the background is a dark and dreary sky, and the sun is exceptionally bright; At noon, the background is a blue sky, and the sun does not contrast much with its brightness, so it appears smaller.

The temperature is higher at noon than in the morning, is the sun closer to us at this time than in the morning? Neither is it. The main reason is that the sun hits the earth obliquely in the morning and the sun shines directly on the earth at noon.

At the same time and in the same area, direct radiation is higher than oblique heat. At the same time, at night, the heat of the sun shining on the ground dissipates, so it feels cool in the morning; At noon, the heat of the sun hits the ground, so it feels hot. The temperature is hot or cold, and it does not indicate how far or near the sun is from the ground.

The Earth's orbit around the Sun is a nearly circular ellipse, and the Sun is located at a focal point of the elliptical orbit, so that the distance between the Sun and the Earth is constantly changing over the course of a year or even a day.

Therefore, whether it is closer to the sun at noon or closer to the sun in the morning depends on what time of year it is.

The difference between the two is very small. If you have to distinguish between near and far, it should be farther in the morning and closer at noon.

The size of the sun is constant, it is a star does not burn up how can it get bigger and smaller, one theory is that the morning water vapor multi-atmosphere diffraction caused by the diffraction of sunlight, affected by the movement of the atmosphere. Another theory is that it is a psychological effect of people, and that the sun rises (sets) in the morning and evening, and people use mountains and houses as references to perceive the sun as a large object, and the sun is in the sky at noon.

I used the whole sky as a reference, so I felt that the sun was getting smaller. The closest time of the day should be 2 p.m., when the sun shines directly on the Tropic of Capricorn and the temperature is at its highest. In 1 year, the Earth is in July (autumnal equinox) at aphelion.

January (vernal equinox) is at perihelion. At the beginning of January every year, the Earth is at the perihelion of its orbit around the Sun, and the distance between the Sun and the Earth reaches a minimum value, which is about 100 million kilometers.

At the beginning of July every year, the Earth is located at the aphelion point of its orbit around the Sun, and the distance between the Sun and the Earth reaches its maximum value, which is about 100 million kilometers.

If it is the day of the day, the midday sun is the closest, and the midnight sun is the farthest.

Within a year, the winter solstice sun is the closest, and the summer solstice sun is farthest because the earth is at perihelion on the winter solstice.

The distance from us is the same.

<> closest is perihelion, the winter solstice, December 22 or 23, and the farthest aphelion, the summer solstice, June 22 or 23. In the Earth's orbit, the closest point to the Sun is called perihelion, and on the winter solstice, the distance is 100 million kilometers. The farthest point from the sun is the apogee point, which is the summer solstice, and the distance is 100 million kilometers.

<> is the closest perihelion, the winter solstice, December 22 or 23, and the farthest is the aphelion, the summer solstice, June 22 or 23. In the Earth's orbit, the closest point to the Sun, called perihelion, is recorded on the winter solstice, and the distance is 100 million kilometers. The farthest point from the sun is the aphelion point, which is the summer solstice, and the distance is 100 million kilometers.