Learn how to build a theremin in this free online video guide to electronic musical instruments, including the history of theremins, playing tips, and how to build your own. The theremin is one of the earliest fully...
This is instructions for how to make a simple sun tracker for solar cells. These are the only parts required: a motor, gears, a small solar cell, a large solar cell, aluminium foil, tape or glue and cardboard. A great...
Jose Pino's Project and Tidbits presents these how to instructions about making hi-fidelity speakers using a styrofoam-plate. This is a good activity to teach students about electricity, magnets, and sound. The...
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