Related Labs, Activities, and Other CoolStuff
Turn your whole chalkboard into a speaker!
This music box mechanism is quiet on its own, but just hold it against a large object (table, chalkboard, window, paper cone, drum) and hear a dramatic increase in volume! It's a simple but memorable demonstration of how sound energy transfers through the process of resonance.
Products being sold are not toys. They are for Educational / Laboratory use only. They are not for use by children 12 and under.
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