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00:02:39
Join the Exploratorium's very own Ken Finn as he demonstrates fun activities, mixing up science with items found around the house.

00:09:29
Have you ever really listened to a ball bounce? Exploratorium staff physicist Thomas Humphrey describes the elegant mathematics of a bouncing ball.

00:06:50
Despite my better judgment, I invite TI staff educator Eric Muller to do one more set of activities—several things you can do with soda straws.

00:00:59
Exhibit developer Erik Thogersen backs away from the Giant Mirror. Watch his image change as he passes through the focal point, then continues on past the center of curvature.

00:04:53
At the Giant Mirror, Senior Staff Scientist Paul Doherty demonstrates a simple way of locating a real image—an image that floats in space in front of the mirror.

00:04:49
Senior Staff Scientist Thomas Humphrey invents a simple experiment to see if the Giant Mirror is spherical or parabolic, and then to see if it's perfectly spherical. By placing a Styrofoam ball at the center of curvature, he's able to prove that the mirror is out of pure sphericity by about one-quarter of one degree.

00:04:37
Staff Neuroscientist Richard Brown demonstrates that the Giant Mirror reflects infrared radiation as well as visible light.

00:52:10
Cheer on the competitors in this zany science cook-off. Teachers compete before a live audience at the Exploratorium for the revered title, "Iron Science Teacher." This week's secret ingredient: batteries.

00:07:42
How big does a mirror have to be for you to see yourself in it? Exploratorium staff physicist Thomas Humphrey describes an activity you can use in your classroom to investigate simple optics.

00:05:59
TI staff educator Eric Muller hits me up for change, and then demonstrates a neat science activity using dry ice.