We’ve covered this simple kitchen-table science project before: how to make a spectrometer from a cereal box and a CD. Here, PopSci offers a 5-minute video on the project.
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A CD – cereal box spectrometer
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Gareth Branwyn is a freelance writer and the former Editorial Director of Maker Media. He is the author or editor of over a dozen books on technology, DIY, and geek culture. He is currently a contributor to Boing Boing, Wink Books, and Wink Fun. His free weekly-ish maker tips newsletter can be found at garstipsandtools.com.
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i dont believe that it worked, guy didnt show us ANY result
It definitely works. You can see an image of it in the previous post I linked to.
It works, just made one from the cardboard tube in the center of a roll of paper towels, its very neat.
Its amazing!! Must try it!!