Found 0 - 10 results of 14 programs matching keyword "electric currents in a pencil"
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. The Southern California Coastal Ocean Observing System (http://sccoos.org/) gathers live data about winds, waves, surface currents, temperature, and water quality, and makes it available to everyone. In this piece, Oceanographer Art Miller tells us about this system, and about how America's Cup sailors can use this kind of data and modeling to improve their race performances.
To access wind modeling data, visit:
Staff educator Modesto Tamez tells how he gets students exploring electromagnets, a great preparation for making an electric motor. 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. 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. An introduction to the jitterbug, a simple motorized toy made of a recycled CD and a DC motor. A detailed demonstration of how to make this toy, including a discussion of materials needed. 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. Watch as three giant helium balloons are launched above Antarctica to study climate history; listen as scientists talk about balloon research. Join Exploratorium staff scientist Charlie Carlson as he continues to examine issues around the Gulf Stream and climate change.