photo credit: Loren M. Winters
Trapped! Analysis of a Real Collision
This is a multiple-exposure photo (hi-res version) of a bb shot into a hanging elastic strip. The series of images was produced by sequentially firing strobe lights, each with its own colored filter. For more information, see Trapped! Analysis of a Real Collision, where you'll also find an interesting paradox to explain.
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Structures around the World
Try Structures around the World from the Exploratorium to find out about the physics and engineering of structures. There's a photo gallery and multiple building activities.