Resistors…resist. It’s what they do. Well, they don’t resist everything. They won’t help you resist the temptations of the dark side, for example. But these little guys are useful components when it comes to regulating the amount of electricity with which you want to work.
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This how-to video explains the process of building a dynamic microphone (which, incidentally, can also be used as a loud speaker) from a cup! This rudimentary audio transducer could be used as a quick project for a physics class exploring electromagnetism or an audio technology class exploring transduction. Or you could do it just for kicks.
The fidelity of the completed project is not studio quality (if it was our lives would be a whole lot cheaper), but it’s cool. And on the upside you don’t have to have an EE degree to build it.
Written and Directed by Travis Kaufman and Nick Dooley
Produced with support from The National Science Foundation