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00:09:30
There���s no mistaking the distinct voice���whether throbbing, singing, or screaming���of an electric guitar. How does one instrument produce so many different sounds? We visit with Bay Area electric guitarists Ava Mendoza and Henry Kaiser, plus Subway Guitars��� very own Fat Dog, to explore the components of this versatile instrument, getting down to pick-ups, ���pots,��� and pedals that make it sing.

00:08:12
Staff educator Modesto Tamez tells how he gets students exploring electromagnets, a great preparation for making an electric motor.

00:02:54
In November 2009, Exploratorium After Dark welcomed particle physicist Dr. Austin Richards���aka Dr. MegaVolt. Under the Palace of Fine Arts rotunda, he jousted with a high-voltage Tesla coil, which generated 200,000 volts of electricity and shot 14-foot-long arcs of lightning through the air.

00:04:22
Meet Dr. Ethan Brodsky from the U. of Wisconsin, who advised a group of undergraduate students in the design and build of an electric snowmobile. Video produced by Ice Stories correspondent Zoe Courville.

00:01:32
An introduction to the jitterbug, a simple motorized toy made of a recycled CD and a DC motor.

00:10:57
A detailed demonstration of how to make this toy, including a discussion of materials needed.

00:01:41
The science behind this toy, including a discussion of how electric circuits work, and how an unbalanced load (an off-center weight on your jitterbug) results in rotational vibration.

00:42:10
Exploratorium Senior Scientist, Dr. Paul Doherty, takes us through the Photoelectric Effect and the "invention" of photons.

00:53:13
Watch as the best teachers on the planet battle it out for the title of Iron Science Teacher. In this zany competition teachers will have ten minutes to create a science activity. This week���s ���secret��� ingredient: Pencils