I’m going on a trip on the 21st, and there’s a total solar eclipse on the 22nd. What’s the best observation tool to use?

Specialized observation glasses

There are special solar eclipse glasses on the market. The observation effect is good with this kind of glasses, and it does not harm the eyes.

Small hole imaging observation

Use a needle to punch a small hole in the paper, and observe the total solar eclipse through the projection of the small hole on another paper or other interface; in addition, you can Use two fingers crossed to form a small hole to observe.

Telescope projection

After passing through the telescope, the image of the sun will be projected on the ground. You can watch the total solar eclipse by observing the projection. However, you must not watch a total solar eclipse directly through a telescope. In serious cases, it may lead to blindness. If you use an astronomical telescope for observation, you need professional guidance.

Welding goggles

There are stores specifically selling welding goggles. But please note: welding goggles are different from sunglasses, and sunglasses cannot be used to observe a total solar eclipse.

Not recommended methods:

Sunglasses/Sunglasses

This is one of the most dangerous ways to observe a total solar eclipse, and it is also one of the most widely rumored methods. . Sunglasses/sunglasses are not specially designed for observing the total solar eclipse. Wearing them directly to observe the total solar eclipse will damage your eyes.

Exposed film

Some people have used this method to observe total solar eclipses before, but because everyone has different levels of film production and film exposure, observation cannot be completely guaranteed. Safe, this method is not recommended.

Candle blackened glass

This is also an early method, but it still has problems. Due to the uneven blackening degree, glass sheet thickness and other issues, it is also not completely guaranteed. Observation safety, this method is not recommended.

Exposed X-ray film

This method has not been fully verified and is not recommended for everyone to use.

Pour ink water

Although the water with ink has turned into a black background, it will still reflect more sunlight to the observer's eyes, which is still harmful to the eyes. Will cause some damage. Not recommended.