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00:10:24
Exploratorium staff member Earl Stirling demonstrates the amazing "Pyrograph", an artwork refined over four years. Like a fiery version of the museum’s classic Drawing Board, Stirling’s "Pyrograph" swings a pendulum over a sandy cauldron, tracing out oscillating patterns in colorful fire. This mesmerizing piece evokes both the Foucault pendulum and Dante’s Inferno.

00:01:54
This After Dark event featured a special installation of the Cubatron by Bay Area artist and engineer Mark Lottor. A visually stunning favorite of music and art festival audiences, the Cubatron is a 3–D light sculpture made from 8–x–8-foot modular cubes, each containing 1,000 individually programmable RGB LEDs. Viewed from any direction—even underneath—the Cubatron’s thousands of programmed pixels paint exquisite arrays of color that cascade in spectacularly dynamic patterns.

00:04:23
Ken Murphy, creator of A History of the Sky— a time-lapse visualization that will span an entire year—talks about his project during the After Dark event, Resolution.

00:08:42
Exploratorium graphic artist David Barker describes the physics of baseball bats, and makes some sweet music in the process!

00:05:23
Our host, Stephanie Chasteen, shares some more fun facts and activities having to do with the science of sound.

00:04:51
A detailed demonstration of how to do the Color Chromatography activity, which lets you see the colors hidden in black ink. Includes a discussion of materials needed.

00:01:12
An introduction to an activity that lets you discover the secret colors hidden in black ink. With a paper towel, a black marker, and a cup of water, create a rainbow of colors while exploring capillary action and chromatography.

00:01:33
Explore the science behind this activity, including capillary action (how the water moves up the paper) and chromatography, or how different elements of the ink are carried along at different rates, allowing you to see that black ink is actually made up of many different colors.

00:08:30
TI staff educator Lori Lambertson explains her philosophy of integrating math and science in the classroom, and how she puts it into practice.

00:22:45
Join Exploratorium Senior Scientist Paul Doherty and visiting scientist Alfredo Mateus for an exploration of hands-on demos. In today's webcast, Paul and Alfredo will be looking at a voice activated chemical reaction and what happens when you heat plastic in water!