Making a Van de graaf

The basic concept behind a Van de graff is creating high voltages, way beyond what any normal battery or generator could make. The average voltage of a Van de graff is around 100kV, which is 417 times more than the voltage that comes out of your plug socket.  While your plug socket can kill you eas…

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Making a Ruben's tube that runs from deodorant for free

A Ruben's tube is a closed tube with many holes drilled into it. It has a diaphragm at the end of the tube, so that sound waves from an external source can easily enter the tube.  It can be used to demonstrate the effects of soundwaves visually, such as standing waves or pressure differences in …

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