Necessary help for total solar eclipse observation on 22nd.

Do not use film. Unsafe, including x-rays. This is very harmful to your eyes.

There are three other ways.

1 pinhole imaging use a needle to make a pinhole in the paper, and watch the sun and see the shadow of the light passing through the pinhole on the ground.

The sun image projected by the telescope will be projected on the ground after passing through the telescope, and the total solar eclipse will be watched by observing the projection. But don't look directly through a telescope. If it is serious, it will lead to blindness.

There is a shop selling welding goggles in the market. However, it should be noted that welding goggles are different from sunglasses, and sunglasses cannot be used to observe the total solar eclipse.

You'd better not use the others, because they are not very safe.