No Solar Eclipse Glasses? Try This DIY Solution


If you want to witness the upcoming solar eclipse, be careful. Your mother was right: never look directly at the sun, as you can seriously damage your eyes. One way to safely view the sun during an eclipse is with eclipse glasses, which have special solar filters. But if you don't have eclipse glasses — or don't trust them because of the numerous counterfeit versions on the market — there's an alternative that's both safe and easy to make: a pinhole projector. You can create this nifty viewer with a cereal box, or you can even fashion a simple one out of two pieces of white paper.

(Image: Jonathan Fong)

Things You'll Need

  • Cereal box
  • White paper
  • Pencil
  • Scissors
  • Tape
  • Hobby knife
  • Duct or packing tape
  • Aluminum foil
  • Small nail
(Image: Jonathan Fong)

Step 1: Cut Paper

Trace the bottom of an empty cereal box with a pencil on white paper.

(Image: Jonathan Fong)

Cut out the rectangle you've just traced, and tape it to the bottom of the inside of the cereal box. The sun will be projected onto this white piece of paper.

(Image: Jonathan Fong)

Step 2: Cut Openings

Close the top of the cereal box, and cut a rectangular opening of about two inches wide from the left and right side of the box top with a hobby knife or scissors.

(Image: Jonathan Fong)

Seal the middle section with duct tape or packing tape.

(Image: Jonathan Fong)

Step 3: Add Aluminum Foil

Cut a piece of aluminum foil that is about one inch larger on all sides than one of the openings. You can choose either the left or right opening.

(Image: Jonathan Fong)

Tape the piece of foil in place.

(Image: Jonathan Fong)

Step 4: Poke a Hole

Using a small nail, poke a hole in the middle of the aluminum foil. You can also use any sharp, pointed object like a push pin or a pen. Your pinhole viewer is now finished.

(Image: Jonathan Fong)

Step 5: Look Through the Opening

Go outside and stand facing away from the sun. Hold the pinhole viewer so that the sun is shining down on the aluminum foil section, and look into the box through the opening.

(Image: Jonathan Fong)

You may have to adjust the angle of the box until you see the projection of the sun at the bottom of the box. Because your face is covering up the opening, the inside of the box will be very dark, allowing you to see the projection more clearly.

(Image: Jonathan Fong)

As the moon covers the sun, you will see a projection of the solar eclipse — safely and without eclipse glasses.

(Image: Jonathan Fong)

A Basic Pinhole Projector

If you don't have time to make a cereal box projector, two pieces of white paper will do the trick.

Step 1: Make the Projection

Cut two pieces of white paper to about eight inches by ten inches. The more rigid the paper the better, so use cardstock if possible.

(Image: Jonathan Fong)

Step 2: Poke a Hole

On one of the pieces of paper, poke a hole in the middle with a small nail.

(Image: Jonathan Fong)

Step 3: View the Sun's Projection

Go outside, and place the white piece of paper without a hole on the ground. With the sun at your back, position the piece of paper with a hole above the paper on the ground so that its shadow can be seen. The projection of the sun will appear in the middle of the shadow.

(Image: Jonathan Fong)
Promoted By Zergnet


Check It Out

DIY Wood Transfer Christmas Ornaments

Is DIY in your DNA? Become part of our maker community.
Submit Your Work!