Geert
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wat je al niet kan doen met een gloeilamp...weet niet hoe te maken

wat je al niet kan doen met een gloeilamp...weet niet hoe te maken

Convert an ATX Power Supply Into a Regular DC Power Supply!

Convert an ATX Power Supply Into a Regular DC Power Supply!

Light and Optics - How to make a spectroscope using a cd, paper tube, aluminum tape, 2 razor blade and a cardboard box:  A spectroscope separates light waves!  "A spectroscope is a device that lets us find out what things are made of. It works by taking light and splitting it up into its component colors."

Light and Optics - How to make a spectroscope using a cd, paper tube, aluminum tape, 2 razor blade and a cardboard box: A spectroscope separates light waves! "A spectroscope is a device that lets us find out what things are made of. It works by taking light and splitting it up into its component colors."