
Three ways to watch the solar eclipse safely without glasses
BBC News
An empty cereal box is ideal for making a pinhole viewer. It works similarly to the projector but should provide a clearer image.
This is because the cardboard box blocks out the surrounding sunshine and allows in only light from the direction of the eclipse.
Cut out a piece of paper that fits the bottom of the box. Open the top the box and tape the cutout to the bottom. This will be the screen on which you see the eclipse.
Close the box and tape it shut. On one half of the top of it, cut out a small square so you can see the paper at the bottom with one eye.
On the other half, cut out another small square to match. Cut out a piece of foil that is large enough to cover this square.
Tape it down over the square and use a pin or needle to poke a hole in the middle of the foil.
Standing with your back to the Sun, use one eye to look through the open square.
Once you’ve lined up the hole in the foil with the Sun, you should see an image of it on the screen at the bottom. This is where you’ll see the eclipse too.
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