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nik282000, 8 miesięcy temu do astronomy w Fake Vs Counterfeit Eclipse Glasses. Did You Get Any? You can use a pinhole to project an image of the sun onto a sheet of paper but not directly as glasses. Look up a ‘pinhole projector’ you can make a pretty good one with an Amazon box.
You can use a pinhole to project an image of the sun onto a sheet of paper but not directly as glasses. Look up a ‘pinhole projector’ you can make a pretty good one with an Amazon box.