What do you need to prepare for the solar eclipse?

Use special or homemade equipment, and it is strictly forbidden to observe the sun directly with the naked eye to avoid damage to the eyes. If you observe a solar eclipse with the naked eye, the easiest way is to find a piece of glass, apply some ink or blackened with smoke, and use them to observe the eclipse, preferably with a bronze sun. It is also possible to overlay several discarded photographic negatives and look at the sun through the negatives (increasing or decreasing the number of negatives according to the intensity of the sunlight), or to observe the reflection of the sun in a basin with a little ink, and to observe the sun through the core of a computer disk, through the dimming of objects such as welded glass.

In this way, the observation effect can be achieved, and the eyes are protected.

In addition, it is not allowed to point the unobstructed telescope directly at the sun, otherwise it will burn out the eye and blind. A light filter must be added to the telescope for direct observation. Photographers should also not photograph the sun directly with a camera that does not have filter protection.

The initial loss is 8:07:08; 9:11:18;

Eclipse was 9:12:49.

The eclipse is 36 degrees at an altitude of 36 degrees from the Sun and 86 degrees at an azimuth from the Sun (4 degrees north due east).

9:14:21; 10:26:23.

Experts remind. Don't look at a solar eclipse "with the naked eye".

Astronomers say that although the sunlight weakens during the eclipse, you can observe the sun directly with the naked eye except for a few minutes during the total solar eclipse, and you must not look directly at the sun during the rest of the time, otherwise you will risk blindness.

Due to the solar eclipse when the sun is completely or partially blocked, the luminosity decreases, the average person is easy to use the naked eye directly ** without protection, and does not feel more dazzling than before, but in fact, the light emitted by 1% of the solar area is also higher than the brightness of electric welding, at this time, if you look directly at the sun for more than 10 seconds, it can cause permanent blindness. "Of course, with the exception of a few minutes during the total eclipse phase, the spectacle of the 'black sun' can be enjoyed directly with the naked eye," the expert stressed, adding that ordinary sunglasses are too transmittance, and it is still dangerous to observe the sun.

Whether you can see a total solar eclipse depends on the sky.

Dark sunglasses, or cobalt glass.

**Total solar eclipse with the help of a special filter or eclipse viewing glasses to prevent the sun from burning the eyes. If you want to observe a solar eclipse through a telescope, you must add Bard membrane to the front of the objective to reduce light. Never point your telescope directly at the sun.

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 will fall on the earth, and the solar eclipse phenomenon will occur.

Features of a total solar eclipse:

The Sun is 400 times the diameter of the Moon, but it is also 400 times farther 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 vague corona (coronal layer) with the naked eye only 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.

1. Choose a good place for a solar eclipse. 2. Tools for preparing for a solar eclipse (such as an observatory) 3. Grasp the time!

4. Be careful, watch when the sun is completely blocked!!

Ways to observe a solar eclipse:

1. Look with a filter. The material used to make the filter can be waste film, or it can be made of broken computer floppy disk core.

2. Look at it with black glass. Candles are used to blacken pieces of glass, which can be used to watch a solar eclipse.

3. Look at it with a basin. Drop an appropriate amount of ink in a basin of water, make black water, and watch the eclipse through the reflection of the sun.

4. Small hole imaging. Using two boards, dig a small hole in one of the boards and let sunlight shine through the small hole in the hood and onto the other board.

5. Shade observation method. During a solar eclipse, the gaps in the shade of the trees will form small natural holes, and the small bright spots under the shade of the trees are all images of the sun's small holes.

6. Look with eclipse glasses. There are special eclipse glasses** on the market.

Ways to observe a solar eclipse:

1. Look with a filter. The material used to make the filter can be waste film, or it can be made of a broken J. Zekuan computer floppy disk core.

2. Look at it with black glass. Candles are used to blacken pieces of glass, which can be used to watch a solar eclipse.

3. Look at it with a basin. Drip an appropriate amount of ink in the basin, and turn it into black water, and watch the eclipse through the reflection of the sun.

4. Small hole imaging. Using two boards, dig a small hole in one of them and let sunlight shine through the hole to the other.

5. Shade observation method. During a solar eclipse, the gaps in the shade of the trees will become natural holes, and the small bright spots under the shade of the trees are all images of the sun's holes.

6. Look with eclipse glasses. There are special eclipse glasses** on the market.

Small hole imaging method:

The appearance of the keyhole instrument can be made to look like that of an astronomical telescope.

The main body is a straight tube with an inner diameter of not less than 2 cm and a length of one or two meters, one end is covered with translucent flat plastic film or frosted glass as a projection screen, and the other end is sealed with opaque cardboard, and then a small hole is pierced with a needle in the middle of the cardboard.

During a solar eclipse, the keyhole is set up with a telescope-like bracket that points to the sun, and with a little adjustment, a small and clear image of the sun can be obtained on the projection screen.

1. Special observation glass. 2. Imaging observation of small holes. 3. Telescope projection.

4. Welding goggles. The specific methods are as follows: 1. Special observation mirror observation:

There are special eclipse glasses** on the market. It is good to observe with these glasses and does not hurt the eyes. 2. Imaging observation of small holes.

A small hole is pierced through the paper with a needle, and the total solar eclipse is observed through the projection of the hole on another paper or other interface; It can also be observed by crossing two fingers to form a small hole. 3. Telescope projection: After the image of the sun passes through the telescope, it will be projected on the ground, and the total solar eclipse will be achieved through observation projection.

But it is absolutely not possible to directly ** a total solar eclipse through a telescope, which can lead to blindness in severe cases. 4. Electric welding goggles: There are stores specializing in electric welding goggles.

However, it is important to note that welding goggles are not the same as sunglasses, which cannot be used to observe a total solar eclipse.

2. Imaging observation of small holes. 3. Telescope projection. 4. Welding goggles.

The specific methods are as follows: 1. Special observation glasses for observation: there are special eclipse glasses on the market**.

It is good to observe with these glasses and does not harm the eyes of this sailbird. 2. Aperture imaging observation: use a needle to pierce a small hole in the paper, and observe the total solar eclipse through the projection of the aperture on another paper surface or other interfaces; It can also be observed by crossing two fingers to form a small hole.

3. Telescope projection: After the image of the sun passes through the telescope, it will be projected on the ground, and the total solar eclipse will be achieved through observation projection. However, it is absolutely impossible to directly ** total solar eclipse through a telescope, and in severe cases, it will lead to premature blindness.

4. Electric welding goggles: There are stores specializing in electric welding goggles. But it should be noted:

Welding goggles are different from sunglasses, and sunglasses cannot be used to watch a car and blindly measure a total solar eclipse.

How to see a solar eclipse:

1. Look at the welding goggles, the welding goggles are meant to protect the eyes under strong light, and you can use it to look directly at the sun.

Pros: Ready to use.

Disadvantages: Welding goggles are not easy to find.

2. Look at the waste film, pull out the newly bought film, and let it be completely. Two or more pieces of waste film stacked on top of each other can be used to look at the sun.

Advantages: Relatively simple.

Cons: It's tiring to hold the film in your hands.

Note: Be sure to have more than two tablets, otherwise it is still very dangerous!

3. Use blackened glass to see, and use candles to bake the glass black, which can be used to look at the sun.

Pros: None. Disadvantages: The glass piece is not easy to find, it needs an open flame, and it is still dangerous if it is not completely blackened.

Note: The black substance that appears on the glass is the carbon particles that are not fully burned, and the gas and natural gas are fully burned and do not produce this substance.

4. Look at it with a basin, drop an appropriate amount of ink in the basin, make it into black water, and watch the eclipse through the reflection of the sun.

Pros: Simple, safe.

Disadvantages: The water fluctuates, and the viewing effect is poor.