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00:05:26
Join Exploratorium staff scientist Ron Hipschman as we visit Dan Werthimer, Director of the SETI Research Center at UC Berkeley. SETI conducts experiments searching for electromagnetic signatures of intelligent extraterrestrial civilizations, spanning wavelengths from radio to visible light, over ten orders of magnitude in characteristic time scale.

00:14:00
How can a bugle make so many notes even though it has no valves? We’ll find out about how waves can fit into pipes, strings and rods in this webcast.

00:08:20
Join Ron Hipschman at a live webcast where he’ll investigate sound waves, interference, beats, and harmonics. What is sound? How high a pitch can you hear? Can two sounds add up to no sound? Explore these questions and more in this resonant presentation.

04:53
How can a wind-powered sailboat move faster than the wind? Why do the America's Cup sails look like airplane wings? With the beginner in mind, Exploratorium senior scientist Paul Doherty introduces the basic physics of sailing and sail design.

00:02:00
See the subtle, mesmeric effects revealed by slow-motion observation of three iconic exhibits: Circling Wave Umbrella, in which spinning fabric forms pockets of swirling air; Rift Zone, a miniature geothermal landscape created by air bubbling through fine sand; and Vortex, a swirling vortex of water in a hydrodynamic dance with gravity.

00:00:45
View a selection of video clips from three exhibits that are part of the new Outdoor Exploratorium collection at Fort Mason.

00:46:27
SETI is a scientific effort seeking to determine if there is intelligent life outside Earth. We were at Aricebo Radio Observatory in March 2003 when scientists listened to the most promising transmissions from UC Berkeley’s SETI@home search. Join the Exploratorium’s Ron Hipschman and special guest Dan Werthimer, chief scientist and principal investigator for the SETI Institute’s efforts, including Arecibo Observatory’s search of artificial radio signals coming from other stars.

00:55:27
Watch as Exploratorium staff and local teachers compete for the title of Iron Science Teacher. Each contestant has 10 minutes to make a science lesson out of a secret ingredient. In this special Halloween edition, today's secret ingredient is: Plastic Bags!

00:11:16
Our team of middle school students from the Aim High program investigates new technologies that use our unique physical traits as tools for identification. Vox Unlocks tunes into voice recognition

12:25:46
Why do many things sound different underwater? How are echoes made? Can you feel or see sound? Join us as we delve into the mysteries of sound. This webcast will feature an Aim High student demonstrating how to make a membranophone; Exploratorium physicist Dr. Paul Doherty modeling sound with ringing aluminum rods, corrugated plastic whirlies, and a slinky; and Marco Jordan, lead educator in the Exploratorium's Outreach program, demonstrating sound science with a "whine" glass and a singing bowl.