Hone your electrostatic levitation skills and fly some tinsel. Next time you’re in the vicinity of a Christmas tree, impress your friends and family with a little levitation. By experimenting with positive and negative charges, you can suspend a loop of tinsel in the air.
Can you listen to a beam of light? Audio signals can be transmitted along radio waves through space, and in electrical pulses through wires. Visible light and other forms of electromagnetic radiation can carry audio signals, too. In this activity, learn how to build a simple device in which the signal from a radio is transmitted along a beam of light traveling between a light-emitting diode (LED) and a solar cell. This science snack was developed by Exploratorium Teacher Institute staff Don Rathjen and demonstrated by Exploratorium Senior Scientist Paul Doherty.
Electromagnetism_Introduction_
Explore the interactions between electricity and magnetism.
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