Eclipse pinhole projector

Yesterday I posted some videos on Instagram of step-by-step instructions on how to build your own pinhole projector to safely view the eclipse on August 21st. In order to make the instructions easier to share, I’ve compiled them all here (well, screenshots from them at least) to help you turn an ordinary cardboard box into a pinhole projector. 

For more information on the eclipse check out the NASA website eclipse2017.nasa.gov.

Step 1: Find a cardboard box and cut a white piece of paper to fit the bottom. 


​Step 2: Tape or glue the white paper to the inside bottom of the box. 

​Step 3: Cut two holes on opposite sides of the top of the box. 


​Step 4: Tape the top of the box closed. 

Step 5: Cover one of the holes with some foil and tape down. 


​Step 6: Put a pinhole in the foil. 


​Step 7: Use the projector with the sun behind your back, looking through the non-foil-covered hole. The sun should be projected onto the white paper in your box. You might need to move it around a bit to get the sun lined up right. 


And that’s it! It’s very simple to make. Let me know if you have any questions. Hope you safely enjoy the eclipse!

Author: cynthiadangelo

I am a researcher, working on educational games, science education, and data visualization. I like photography, soccer, traveling, and teaching my dog new tricks.

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