結果 : how to make a pinhole projector to view the solar eclipse
1:06

How to Make a Pinhole Projector to View the Solar Eclipse

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How to make a pinhole projector to watch the eclipse

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How to make your own pinhole projector to view the solar eclipse

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How to Make a Pinhole Projector to View the Solar Eclipse

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How to make a pinhole projector to watch the solar eclipse

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How-to Make a Pinhole Projector to Safely Watch a Solar Eclipse

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How to build a pinhole projector for viewing a solar eclipse!

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