Total solar eclipse observation method, what should be paid attention to when observing a total sola

Soil method] 1 Look with electric welding goggles.

Welding goggles are meant to protect your eyes under strong light, and you can use them to look directly at the sun.

Pros: Ready to use.

Disadvantages: Welding goggles are not easy to find.

2 Look at waste film.

Rip out the newly bought film and let it 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 Look at it with a blackened piece of glass.

Pieces of glass are blackened with candles and 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 with a basin of water.

Drop an appropriate amount of ink in a basin of water, make 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.

5 Small hole imaging.

The appearance of the small hole instrument can be made like 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 of the tube is covered with a translucent flat plastic film or ground glass to make a projection screen, and the other end is sealed with opaque cardboard, and then in the middle of the cardboard, pierce a small hole with a needle, and it is good. During a solar eclipse, the small aperture is set up with a bracket like a telescope, and the small hole is aimed at the sun, and a small and clear image of the sun can be obtained on the projection screen with a slight adjustment.

Advantages: Image stabilization, easy to observe.

Cons: Cumbersome production process.

6 Shade Observation.

In the process of the eclipse, you can see those small highlights from round to loss, each small bright spot is a small solar eclipse image, on the ground, on your arm, next to the dog walking, all these small eclipse images.

Foreign method] 1 Look at it with eclipse glasses.

There are special eclipse glasses** on the market. Please refer to the cover of this issue of New Knowledge Weekly.

2 Look with a camera.

Note that viewing the eclipse directly from the frame can also hurt the eyes without a filter, so never try it. It's best to use a tripod when shooting, and if you want to get a clear image of the eclipse, you also need a telescope. To capture the fleeting "Bailey Bead", you need a camera with a very high shutter speed.

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

2.Small hole imaging. Two sheets of white paper, one with a neat circular hole on it, one facing the sun and one behind the hole, allowing the sunlight to pass through the hole and image on the other white paper;

3.Shade observation. During the 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;

4.Telescope projection. Never hold a telescope to look directly at the sun, if you use a telescope to look directly at the sun, be sure to use a filter;

5.Look at it with a camera. Viewing the eclipse directly from the frame can also hurt your eyes without a filter, so don't try it.

Look at it for two or three minutes, take a break, and then read it again.

Ink observation method (but this method has a low light reduction rate, easy to hurt the eyes, not recommended) can take a basin of water, add ink, and see the sun through the reflection of the water surface.

Pinhole projection method.

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

Telescope projection.

Don't shake your hands, or the shadow of the sun will run back and forth. And never hold a telescope to look directly at the sun, if you use a telescope to look directly at the sun, be sure to use a filter.

Note: Do not use the so-called "sun card", "eclipse card", etc. provided by informal organizations.

An annular solar eclipse is a rare astronomical spectacle, but looking at a beautiful annular solar eclipse directly can damage your eyesight, so how can you safely observe an annular solar eclipse?

Astronomical phenomena are beautiful, but we can't ignore the safety hazards while making observations. For example, due to solar eclipses, the temperature will change, the earth's magnetic field will change, and the day will suddenly darken. As a result, some animals are not adapted to their physiological habits, such as dogs, cats and other pets should be leashed to avoid livestock panic and injury incidents.

So, let's take a look at the knowledge of constellations and take a look at the precautions for observing a total solar eclipse.

1. It is strictly forbidden to disguise feudalism during the period of natural phenomena, maliciously deceive the masses, and undermine the unity of the nation and the state.

2. Do not be in other dangerous places such as streets and roads, so as not to pay too much attention to the danger of life caused by the eclipse, and pay attention to safety when you are on the balcony to avoid falling downstairs.

3. Due to the temperature caused by the solar eclipse, the earth's magnetic field changes, and the day is darkened. As a result, some animals are not adapted to their physiological habits, such as dogs, cats and other pets should be leashed to avoid livestock panic and injury incidents.

Observing a total solar eclipse Do not directly observe Medical experts point out that it is almost impossible to look directly at the sun for a long time because of ultraviolet and infrared rays that cause macular burns in the retina. The macula of the retina is the most sensitive part of the retina, which allows light to be concentrated and the image clear. Once burned, the retinal macula will never recover.

You may not feel it when you get burned, but you will react a few hours later, and in severe cases, you will lose sight. For this reason, when doing a total solar eclipse, the first thing to pay attention to is that Hu Zai must not use the naked eye or any optical equipment (such as telescopes, etc.) to look directly at the sun!

This is not just a suggestion, but a very serious warning. How can we avoid some accidents? Here are a few ways to do it.

1) Quick and easy observation methodsIn fact, the recommended practice is to use only two blank sheets of paper. One piece of white cardboard is used as a screen, and a pinhole is poked in the other cardboard, holding the pinhole cardboard up as far away from the screen cardboard as possible. The farther apart the two cardboards, the larger the image formed.

Of course, there is an easier way, you only need the help of your own hands, raise your hands up, and the fingers are perpendicular to each other, cross and overlap, so that the hands form a net with many small holes, which can be used as simple imaging holes.

2) A special pair of glasses is required to buy observation glasses or lens protection glasses. There are glasses on the market that have this special sun observation protection glasses, ** about 5 yuan left crack to give way to the right.

You can't make your own goggles, it's very dangerous.

3) Take a basin of water (a small cup is fine) and drip a relatively large amount of black ink into the water, which can be observed in the water during a solar eclipse. (Planar Mirror Imaging).

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