Recent astronomers can see the extremely rare phenomenon of partial solar eclipse, which will appear in many areas of China on August 11. Please don't miss this spectacular sight. So how did partial eclipse form? When did partial eclipse appear on August 11? Come and have a look!
What time is the partial eclipse on August 11
In the afternoon of August 11, we can see it in many areas of our country.
On the evening of 11th of this month, Tianyu will have a partial solar eclipse, which is the only solar eclipse that can be observed in China this year. Among them, the northern part of China can be seen as "dog bites the sun", and the eastern and central parts can be seen as "sunset with food". In order to make the local public better watch the partial eclipse of the next day, the astronomy experts listed the specific visible time in the main cities of our country for the reference of local astronomy lovers.
According to Shi Zhicheng, member of the Chinese Astronomical Society and director of Tianjin astronomical society, there are three main time nodes in the process of solar eclipse: initial loss (beginning of eclipse), that is, when the moon is close to the sun, the first time the apparent circle of the sun and the moon is tangent to each other, marking the beginning of eclipse in this place. What to eat, that is, the moment when the center of the moon and the sun are closest, at this time, the part that sees the sun covered is the largest. When the Moon leaves the sun, the second circumscribed moment of the apparent circle of the sun and the moon marks the end of the eclipse.
Partial eclipse area on August 11
In the northern part of China, it can be seen that the dog bites the sun, and in the middle and eastern part of China, it can be seen that the sun sets with food. The specific time of Guiyang is 19:02, 19:11, 19:34.
Astronomy experts remind that the public must not use the naked eye to observe the partial solar eclipse directly, so as to prevent the sun from burning the eyes. The telescope or camera should pay more attention to the use of light reduction measures.
Before observing the partial solar eclipse, choose a proper viewing place in advance. The best viewing place is the high place where you can see the sun setting. If you are in a high-rise building, you can watch it from the west facing balcony or window. Or go to the sky tower or the top of the mountain, but be sure to choose this place one or two days ago, and try to shoot the sun.
Astronomy experts specially remind that, for example, when shooting a partial solar eclipse with an astronomical telescope, camera or camera, attention should be paid to the use of dimming measures, and appropriate dimming plates must be added in front of the objective lens.
It is reported that partial solar eclipse means that when the moon moves between the earth and the sun and the earth moves to the penumbra area of the moon, part of the earth is covered by the penumbra outside the shadow of the moon, and part of the sun seen in this area will be blocked by the moon. Partial solar eclipse is a common astronomical phenomenon.
partial solar eclipse
Partial solar eclipse refers to the astronomical phenomenon that when the moon moves between the earth and the sun and the earth moves to the penumbra area of the moon, part of the earth is covered by the penumbra outside the moon shadow, and part of the sun seen in this area will be blocked by the moon. Partial solar eclipse is a common astronomical phenomenon. Partial solar eclipse was observed in Northeast China on June 2, 2011 Beijing time.
Partial solar eclipse is a phenomenon in which the moon forms a shadow between the earth and the sun. The shadow of the moon can be divided into three parts: the umbra, the penumbra and the pseudoumbra. The orbit of the moon around the earth and the orbit of the earth around the sun are not exactly circular, so the distance between the sun and the moon and the earth is close and far. Therefore, the observer sees the sun partially covered by the moon in the penumbra, which is called partial solar eclipse; during the solar eclipse, the observer sees the sun completely covered by the moon in the umbra, which is called total solar eclipse; there is a halo around, which is called annular solar eclipse.
When the moon moves around the earth until the sun rises and sets almost at the same time as the sun, and the moon cannot be seen from the earth, it is called the new moon. The solar eclipse occurs in the new moon. The period of the new moon is about 29.53 days. But not every 29.53 days, because the orbit plane of the moon around the earth and the orbit plane of the earth around the sun do not exactly coincide, there is an average angle of 5 & deg; 9 \ 'between them. Therefore, solar eclipse occurs only when the sun is within an angle from the intersection of the two orbital planes.
In the evening of August 11, 2018, a partial eclipse of the next day can be observed in China.