This pinhole projector uses triangular, circular, and square holes to help explore how and why pinhole projection works to create real images of the Sun. 0
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Use a shoebox and other common materials to create a safe way to view the Sun. 3713
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How-to Video
Use a cereal box and other common materials to create a safe way to view the Sun. 3752
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Use a long box or tube and other common materials to create a safe way to view the Sun. 0
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