What exactly is a solar eclipse like? What exactly does a solar eclipse look like?

A solar eclipse, also known as a solar eclipse, is the movement of the moon between the sun and the earth, if the three are exactly in a straight line, the moon will block the light of the sun to the earth, and the black shadow behind the moon falls on the earth, and the solar eclipse phenomenon occurs.

In folklore, this phenomenon is called the Tengu Eclipse Day. Solar eclipses only occur at the New Year, when the Moon and the Sun are conjunct. Solar eclipses are divided into partial solar eclipses, total solar eclipses, annular solar eclipses, and total annular eclipses.

You can't look directly at the sun when observing a solar eclipse, otherwise it will cause temporary blindness, and in severe cases, permanent blindness.

In 2016, there were two solar eclipses in Tianyu. The timing of the two eclipses is a total solar eclipse on March 9 and an annular solar eclipse on September 1.

The Sun is 400 times wider than the Moon, but it is also 400 times farther away from the Earth. Because of the symmetry, the moon's shadow, the shadow that falls on the earth's surface, is just wide enough to cover the entire sun. The sun's photosphere is completely obscured by the moon, and the originally bright solar disk is obscured by a black lunar shadow.

However, it is only possible to observe the faint corona (coronal layer) with the naked eye when a total solar eclipse occurs. A total solar eclipse occurs only when the Moon is at perigee, when the Moon's umbral cone is longer than the distance between the Moon and the Earth, so that the umbral cone can sweep to the Earth's surface. Since the actual volume of the Sun is much larger than that of the Moon, a total solar eclipse is usually only visible in a very small area of the Earth, because the Moon's umbra is only a small dot to the Sun.

Outside the total eclipse zone, the eclipse seen is a partial eclipse). The last total solar eclipse occurred on March 20, 2015.

In the sunlight, the moon and the earth drag a shadow in the direction of their backs to the sun. The moon swept across the ground, creating a solar eclipse. The eclipse must occur on the New Year's Day, the first day of the lunar calendar. The moon burrows into the Earth's shadow, causing a lunar eclipse.

Solar and lunar eclipses are typical examples of light propagating in a straight line in the same homogeneous medium. It is not every time a solar eclipse occurs when the moon moves between the sun and the earth, and two conditions need to be met for a solar eclipse to occur. First, solar eclipses always occur on New Year's Day (the first day of the lunar calendar).

Eclipses are not guaranteed on all New Moons, because the Moon's orbit (the white path) and the Earth's orbit (the ecliptic) are not in the same plane. The plane of the white and the plane of the ecliptic have an angle of 5°9. Second, both the Sun and the Moon move near the intersection of the white and ecliptic paths, and the Sun is at a certain angle from the intersection (eclipse limit).

Since the orbits of the Moon and the Earth are not perfectly circular, and the distance between the Sun and the Moon and the Earth is sometimes near and far, the shadow formed by the sun's rays being obscured by the Moon can be divided into umbra, pseudoumbra (formed when the Moon is far away from the Earth) and penumbra on the Earth. The observer is in the umbra range and can see a total solar eclipse; An annular solar eclipse can be seen in the pseudoumbra range; In the penumbra range, only a partial solar eclipse can be seen. <>

Partial solar eclipse: According to Chinese history books"There is an eclipse of the sun, and it is not as good as a hook"The reason for the partial solar eclipse is that the observer falls in the penumbral region of the moon, and the observer will see that part of the sun is obscured by the moon's shadow, but the other part continues to glow. The Sun and Moon only partially coincide, and the size of the eclipse is measured by the apparent distance between their centers (the maximum diameter of the Sun covered by the Moon).

Usually a partial solar eclipse occurs in conjunction with other eclipse phases, such as a total solar eclipse or annular solar eclipse or total annular solar eclipse. However, some eclipses that occur in the polar regions will be purely partial solar eclipses (without other eclipses) because the Moon is slightly farther away from the ecliptic plane, with only the penumbra touching the Earth's surface, and the last partial solar eclipse that did not accompany other eclipses occurred on October 23, 2014. <>

A solar eclipse is when the moon circles the earth and turns between the sun and the earth, if the sun, the moon, and the earth are exactly lined up or close to a straight line, the moon blocks the sunlight that shoots to the earth, and the black shadow behind the moon falls on the earth, and the solar eclipse phenomenon occurs. People in the shadow of the moon on the earth began to see the sun 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 black shadow, and began to produce light and recircle.