How can you tell the difference between a solar and a lunar eclipse? How to distinguish between a lu

The moon obscures the sun called a "solar eclipse", and a solar eclipse always occurs on the first day of the lunar calendar. When the Moon turns to the side of the Earth facing away from the Sun, the Earth is in the middle of the Sun and the Moon, and when the three celestial bodies are in a straight line or close to a straight line, the Earth blocks the light from the Sun on the Moon. Then we see a faint round shadow reflected on the moon, and the moon darkens and becomes bronze.

This shadow is the shadow of the earth. The Earth's shadow reflected on the Moon is called a "lunar eclipse". Lunar eclipses always occur on the first and a half months of the lunar calendar.

We say that solar eclipses always occur on the first day of the lunar calendar, but not every lunar first day of the lunar calendar will occur on the first day of the solar calendar. Because the circle of the moon around the earth and the circle of the earth around the sun are not on the same plane. When looking at the Moon on Earth, sometimes the Moon passes above or below the Sun, and the three celestial bodies are not in a straight line or close to a straight line, so the Moon does not obscure the Sun and a solar eclipse does not occur.

In the same way, although a lunar eclipse always occurs in a lunar month and a half, it does not occur every lunar month and a half. This is because the moon is in a straight line or nearly a straight line with the sun and the earth at the end of the moon and a half. If the moon passes above or below the Earth's shadow, the Earth will not be able to block the sun's rays shining on the moon, and a lunar eclipse will not occur.

The daytime eclipse is called a solar eclipse, when the moon blocks the sun's rays, and the night eclipse is called a lunar eclipse, when the earth blocks the sun's rays.

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The differences are as follows:1. The causes are different. A solar eclipse is when the moon moves between the sun and the earth, and the moon blocks the sun's light; A lunar eclipse is when the Earth moves between the Sun and the Moon, blocking the Sun's light from the Moon.

2. The time of appearance is different. A solar eclipse will occur on the New Year's Day, and a lunar eclipse can only dissipate around the fifteenth day of the lunar calendar.

3. There are different types of Zen practice. There are four types of solar eclipses: partial solar eclipses, total solar eclipses, annular solar eclipses, and total annular eclipses. Lunar eclipses can be divided into three types: partial lunar eclipses, total lunar eclipses, and penumbral lunar eclipses.

The biggest difference is that a solar eclipse occurs during the day and a lunar eclipse occurs at night.

Solar eclipse: It 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 towards the earth, and the black shadow behind the moon will fall on the earth, and the solar eclipse phenomenon will occur. Solar eclipses generally occur on the first day of the lunar calendar.

Lunar eclipse: When the lunar cover slowly moves to the shadow part of the Earth, the area between the Moon and the Earth will be blocked by the Earth's sunlight, and a piece of the Moon will be missing. The Sun, Earth, and Moon at this time happen to be (or almost) in the same straight line.

Lunar eclipses can be divided into three types: partial lunar eclipses, total lunar eclipses, and penumbral lunar eclipses. Lunar eclipses can only occur around the 15th day of the lunar calendar.

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 sometimes far, the shadow formed by the sun's obscuration by the moon can be divided into a shadow, a pseudoumbra (formed when the moon is far away from the earth) and a 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 of the deletal zone, only a partial solar eclipse can be seen.

There are many high mountains on the surface of the moon, and the edge of the moon is untidy. When the valley on the edge of the moon fails to completely cover the sun at the moment of eclipse or the arrival of light, the uncovered part forms a luminous area, like a crystal "diamond"; The pale red ring around it forms the "ring" of the diamond ring, and on the whole, it looks like a diamond ring inlaid with brilliant gemstones, called a "diamond ring". Sometimes many particularly bright rays or points of light are formed, as if a string of pearls is set around the sun, called "Bailey beads" (Bailey was a French astronomer).

Whether it's a partial solar eclipse, a total solar eclipse, or an annular solar eclipse, the time is very short. The area where solar eclipses can be seen on Earth is also limited, because the Moon is relatively small, and its umbra is also relatively small and short, so the umbra does not sweep over the Earth for a long time, because the average length of the lunar umbra (373293 km) is less than the average distance between the Moon and the Earth (384,400 km), for the whole Earth, annular solar eclipses occur more often than total solar eclipses.

The causes are different, the types are different, the time of occurrence and the observed phenomena are different.

First, the causes are different:

Solar eclipse: 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. (A solar eclipse occurs when the Moon passes halfway between the Sun and the Earth.)

Lunar eclipse: A lunar eclipse is a special astronomical phenomenon that refers to the area between the Moon and the Earth when the Moon moves to the shadow part of the Earth, because the sunlight is blocked by the Earth, and a piece of the Moon is missing. (A lunar eclipse occurs when the Earth is between the Moon and the Sun.) ）

Second, the types of inclusion are different:

Solar eclipses: Solar eclipses are divided into four types: partial solar eclipses, total solar eclipses, annular solar eclipses, and total annular eclipses.

Lunar eclipses: Lunar eclipses can be divided into three types: partial lunar eclipses, total lunar eclipses, and penumbral lunar eclipses.

3. The time of occurrence is different:

Solar eclipse: A solar eclipse must occur on the New Year's Day, the first day of the lunar calendar.

Lunar Eclipse: Lunar eclipses can only occur around the 15th lunar calendar.

Fourth, the observed phenomena are different:

Solar eclipse: Total solar eclipse and annular solar eclipse have five processes: initial loss, eclipse, eclipse, light, and recirclement, while partial solar eclipse only has three processes: initial loss, eclipse, and recirclement.

Lunar eclipse: The process of the official lunar eclipse is divided into five stages: initial loss, eclipse, eclipse, rebirth, and recuperation.

The biggest difference between a solar eclipse and a lunar eclipse is that a solar eclipse occurs during the day, while a lunar eclipse occurs at night. A solar eclipse is when the moon is sandwiched between the sun and the earth, casting a shadow to form a solar eclipse, and a lunar eclipse is when the earth is sandwiched between the sun and the moon, and the earth blocks the sun's rays from the moon, forming a lunar eclipse.

Fred Whipple's book, Earth, Moon, and Planets, says that solar eclipses are common, occurring 2 to 5 times a year, but that total eclipses are only a few miles wide when viewed on Earth. At any given location on Earth, total solar eclipses occur only once every 360 years. Lunar eclipses produced by the Earth's shadow are less common than solar eclipses, yet each lunar eclipse covers about half of the Earth's surface.

You can see three lunar eclipses a year at any given location, but some years you won't see even one lunar eclipse. In any one calendar year, the maximum number of eclipses is 4 solar eclipses and 3 lunar eclipses.

The reason why there are more solar eclipses than lunar eclipses.

The plane of the Moon's orbit around the Earth (the white plane) and the Earth's orbital plane around the Sun (the ecliptic plane) are not parallel, but have an angle of 5 degrees and 9 minutes, which is called the yellow-white angle. A solar and lunar eclipse can only occur for a period of time before and after the moon passes the yellow and white nodes.

When the Moon passes the yellow and white nodes, a solar eclipse will definitely occur 16 days before and after the Yellow and White Node, a solar eclipse may occur in 16 to 18 days, and a solar eclipse cannot occur for more than 18 days; A lunar eclipse must occur only 9 days before and after the moon passes the yellow and white nodes, a lunar eclipse may occur between 9 and 11 days, and a lunar eclipse cannot occur more than 11 days.

A period of time before and after the moon's yellow and white nodes can occur is called an eclipse season, a solar eclipse season is about 32 days, a lunar eclipse season is about 20 days, and a synodic month is a day.

So there will be 1 or 2 solar eclipses in a season, and there may be only one lunar eclipse or none in a lunar eclipse season. There are two eclipse seasons in a year, so there are 2 to 4 solar eclipses and 0 to 2 lunar eclipses in a year, so there are more solar eclipses than lunar eclipses.

1. The time of occurrence is not the same: the solar eclipse occurs during the day; Whereas, a lunar eclipse occurs at night. 2. The reasons for the formation are different

A solar eclipse is formed by the shadow of the moon sandwiched between the sun and the earth, casting a hail canopy; A lunar eclipse is formed when the Earth is sandwiched between the Sun and the Moon, and the Earth blocks the Sun's rays from the Moon. 3. Different types: solar eclipses are divided into partial solar eclipses, total solar eclipses, annular solar eclipses, and total annular eclipses; Lunar eclipses are divided into total lunar eclipses, partial lunar eclipses, and penumbral lunar eclipses.

When observing a solar eclipse, you should not look directly at the sun, otherwise it will cause transient blindness, and the solar eclipse usually occurs on the first day of the lunar calendar. Lunar eclipses occur at least twice a year around the world. Lunar eclipses are generally on the lunar calendar.

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Solar eclipse: It 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 towards the earth, and the black shadow behind the moon will fall on the earth, and the solar eclipse phenomenon will occur.

A lunar eclipse is when the Moon moves to the shadow part of the Earth, and the area between the Moon and the Earth will be obscured by the Earth's rays, and a piece of the Moon will be missing. At this time, the sun, the earth, and the moon happen to be in the same straight line.

1. A solar eclipse is when the moon blocks the sun; A lunar eclipse is when the moon runs into the shadow of the earth.

2. There is an annular eclipse in a solar eclipse, but there is no lunar eclipse; Lunar eclipses have penumbral lunar eclipses; A lunar eclipse starts on the east side and ends on the west side, whereas a solar eclipse starts on the west side and ends on the east side.

3. When a solar eclipse occurs, the area covered by the shadow of the moon is very narrow, especially the total solar eclipse and annular solar eclipse are more limited, so people have few opportunities to see it. If it were a point on Earth, it would take three to four hundred years to see an annular or total solar eclipse. Although the number of hail lunar eclipses is not much, as long as the source can see the moon, the lunar eclipse phenomenon can be seen, so there will be more chances of seeing the lunar eclipse in the same place.