When and how often a total solar eclipse occurs, and when is the time of a total solar eclipse

Of course, there is a law, which is related to the revolution and rotation of the earth.

The whole process of a total solar eclipse.

First loss. Since the Moon orbits the Earth from west to east, the eclipse always begins at the western edge of the Sun's circle. When the eastern edge of the lunar surface is tangent to the western edge of the solar surface, it is called the first waning. The first waning is the moment when the eclipse process begins.

Eat both. From the beginning of the waning, the moon continues to move eastward, and the part of the sun's circle that is obscured by the moon gradually increases, and the intensity and heat of sunlight decrease significantly. When the eastern edge of the lunar surface is intangent to the eastern edge of the solar surface, it is called an eclipse. At this point, the entire circle of the sun is obscured.

Eat very much. After eating, the moon will be silky? Weary? Paralyzed couples are walking in the twilight legs, and the grandmother is walking in the south? Protect? Painful wringing into a sorrel 6 even palm? Dedicated to this? Hips? Aluminum Lin Chen, stupid otter?

Shine. After the eclipse, the moon continues to move eastward, and when the western edge of the lunar surface and the western edge of the solar surface are intangent, it is called shengguang, which is the moment when the total solar eclipse ends.

Round. After the light is generated, the lunar surface continues to move away from the solar surface, and the obscured part of the sun gradually decreases, and the moment when the western edge of the lunar surface tangent to the eastern edge of the solar surface is called a double circle. The sun takes on the shape of a disk again, and the entire total solar eclipse process is over.

How to observe a solar eclipse.

Unaided eye**. The easiest way is to find a piece of glass, apply some ink or blacken, and use them to eclipse the sun, and your eyes will be protected from harm.

Telescope observations.

Do not look at the sun directly through a telescope or you will burn your eyes. A more appropriate approach is to use a projection panel. The projection pole is installed at one end of the eyepiece, and the focal length of the eyepiece is adjusted so that a clear image of the sun appears on the projection board to observe the whole process of the solar eclipse.

It's not just the complexities, you also have to know a lot of precise data, which is not easy to find online. Roughly speaking: the two solar eclipses of each year occur 11 days earlier than the same period of the previous year, such as one on July 11 next year, but this is not an absolute ......

The time of the total solar eclipse is the astronomer's passing through the celestial phase**, and the most recent times** are March 20, 2034, September 2, 2035, April 30, 2060, August 24, 2063, April 11, 2070, April 21, 2088, and October 4, 2089.

During a total solar eclipse, light shines through the gaps in the leaves to cast the shadow of a crescent moon. During a total solar eclipse, animals are often ready to sleep or behave abnormally. In the event of a total solar eclipse, the local temperature usually drops by at least 20 degrees.

When 99% of the sun's surface is covered, the phenomenon of morning and dusk shadowing can be seen.

During a total solar eclipse, there will be a narrow band of light around the horizon, because the observer is not directly under the shadow of the moon, and the Earth is a certain distance from the moon.

Total solar eclipses are divided into five stages: initial loss, eclipse, eclipse, regeneration, and recovery. Since the Moon is smaller than the Earth, only people in the moon's umbra will be able to see a total solar eclipse. Folks call this phenomenon the Tengu Eclipse Day.

The two locations where the ecliptic and the white plane intersect are the most suitable periods for solar and lunar eclipses to occur, and are known as eclipse seasons. The eclipse season is not limited to one or two days, because the sun is relatively slow to "move", it is prone to solar and lunar eclipses for a period of time near the intersection of two planes. Specifically, a lunar eclipse will occur for about 24 days before and after the Sun is at this position, whenever there is a full moon; For about 34 days, as long as there is a new moon, a solar eclipse will basically occur.

The white and ecliptic are not on the same plane, but have an angle of about 5°9, which makes it possible for the Sun to move to the New Moon or Full Moon position, and the position of the Sun is either north or south, and the position is staggered from the Earth, and no solar or lunar eclipse will occur.

The conditions for a total solar eclipse to occur are that the Sun, the Moon, and the Earth are exactly aligned or close to a straight line, and the Moon blocks the sunlight that hits the Earth, and the dark shadow behind the Moon falls exactly on the Earth. A total solar eclipse is an astronomical phenomenon in which the sun is completely obscured by the moon.

People in the shadow of the moon on the earth began to see the sunlight gradually weakening, the sun surface was obscured by a round black shadow, when the sky turned dark, all the brightest stars and planets could be seen in the sky, and after a few minutes, the sun gradually appeared from the edge of the moon's dark shadow, and began to glow and recircle. Since the Moon is smaller than the Earth, only people in the shadow of the Moon can see a total solar eclipse.

The process of a total solar eclipse can include the following five periods: the first loss, the eclipse, the eclipse, the light, and the round. Since the Moon orbits the Earth from west to east, solar eclipses always begin at the western edge of the Sun's circle.

When the eastern edge of the moon first touches the circular surface of the sun (that is, the moment when the eastern edge of the lunar surface and the western edge of the lunar surface are tangent), it is called the first wancing.

The first waning is the moment when the eclipse process begins. Since the beginning of the food loss, it is the partial food stage. As the moon continues to move eastward, the part of the sun's circle that is obscured by the moon gradually increases, and the intensity and heat of sunlight decrease significantly.

When the eastern edge of the lunar surface is intangent to the eastern edge of the solar surface, it is called an eclipse.

At this time, the entire circle of the sun is obscured, so the eclipse is the moment when the total solar eclipse begins. After the eclipse, the lunar wheel continues to move eastward, and when the center of the lunar wheel and the center of the sun are closest to each other, the eclipse is reached. For partial solar eclipses, an eclipse is the time when the sun is most obscured by the moon.

The moon continues to move eastward, and the moment when the western edge of the lunar surface and the western edge of the solar surface are intangent is called shengguang, which is the moment when the total solar eclipse ends.

Before the light will occur, the phenomenon of diamond rings and pearls will appear on the western edge of the sun, but they will soon disappear. After the recirclement, the lunar surface continues to move away from the solar surface, and the obscured part of the sun gradually decreases, and the moment when the western edge of the lunar surface tangent to the eastern edge of the solar surface is called a recircle. The sun took on the shape of a disk again, and the entire total solar eclipse process was declared to be over.