What are the poems with bright moon in the sky?

Poems about the moon include the bright moon rising from the mountains of heaven and in the infinite haze of the sea of clouds. The mighty wind blew Wan Li and crossed Yumen Pass. The moon, at this time is at sea, over the end of the world. The bright moon shed clear light from the cracks and cleared the fountain on the rocks.

moon

The moon itself does not shine, but reflects sunlight. The brightness of the moon varies with the angular distance between the sun and the moon and the distance between the earth and the moon. The brightness at the full moon is more than ten times higher than that at the top and bottom chords. The average brightness of the moon is 1/465000 of the brightness of the sun, and the brightness varies from 1/630000 to 1/375000. The average brightness at the full moon is-12.7, etc.

Its average illumination to the earth is 0.22 lux, which is equivalent to the illumination of 100 watt electric lamp at a distance of 2 1 meter. The surface of the moon is not a good reflector, and its average albedo is only 9%, and the other 9 1% is absorbed by the moon. The albedo of Guangdong Sea is even lower, about 7%. The albedo of the lunar highlands and craters is 17%, and it seems that the mountains are brighter than the moon sea.

The distance from the moon to the earth is about 1/400 of the distance from the earth to the sun, so the moon is as big as the earth to the sun.

Knowledge expansion:

Because there is no atmosphere on the moon, the heat capacity and thermal conductivity of lunar materials are very low, so the temperature difference between day and night on the surface of the moon is very large. During the day, where the sun shines vertically, the surface temperature of the moon is as high as 127℃.

At night, the surface temperature can be reduced to-183℃. The temperature of lunar soil can be measured by radio observation. This measurement shows that the temperature in the deeper part of the lunar soil rarely changes, which is precisely due to the low thermal conductivity of lunar material.

From the propagation of lunar seismic waves, we know that the moon also has layered structures such as shell, mantle and core. The average thickness of the outermost shell of the moon is about 60 ~ 64.7 kilometers. Below the lunar crust 1000 km is the lunar mantle, which occupies most of the moon's volume.

The earth and the moon revolve around each other, and the two celestial bodies revolve around the center of gravity under the surface 1600 km. The birth of the moon has added many new things to the earth. While the moon revolves around the earth, its special gravity attracts the water on the earth and moves with it, forming tides. Tides helped the early aquatic life of the earth to land.