Traditional Culture Encyclopedia - Photography and portraiture - When is the annular eclipse?

When is the annular eclipse?

Under the sunlight, the moon and the earth are dragging shadows away from the sun. The moon swept across the ground and produced an eclipse. The solar eclipse must happen on the first day of the lunar calendar.

The angle of view of the sun and the moon is about half a degree, and the revolution of the moon is 360 degrees, that is, it moves half a degree every hour, which is the position of a moon, so it takes up to 2 hours from the beginning to the end of the eclipse.

That is, moving the positions of the two moons, if it is not a total lunar eclipse, the time is shorter. In addition, due to the rotation of the earth, the position of the sun in the air moves 15 degrees every hour, that is to say, within 30 degrees, the sun and the moon move at the same time and an eclipse occurs at the same time.

Annular eclipse is a kind of solar eclipse. When it happened, the central part of the sun was dark and the edge was still bright, forming a halo. This is because the moon is between the sun and the earth, but it is far from the earth and cannot completely cover the sun. When an annular eclipse occurs, the projections of objects sometimes overlap. On May 2, 2065438, an annular eclipse appeared in the sky. The longest time that this annular eclipse can be observed in China is 4 minutes and 33 seconds. In addition, in 20031October 3, 201kloc-0/65438, a total solar eclipse occurred in many parts of the world. It is said that this total solar eclipse is the second day of this century.

On the afternoon of June 2 1 2020, the astronomical landscape of "annular eclipse" appeared in Tianyu. The "eclipse degree" of this "annular solar eclipse" reached more than 0.99, that is, it covered more than 99% of the entire circular surface of the sun, almost approaching total eclipse. This "annular solar eclipse" is also called "Phnom Penh solar eclipse".