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Check these out to get you and your students inspired to enter next year's contest: Panorama of finalists' entries 1-50 |
University of Wisconsin, Madison, professor Clint Sprott shows standing sound waves in natural gas during their "Wonders of Physics" demo show. The large metal pipe has a row of holes across the top. Gas enters from the right and a speaker generates sound waves on the left. Lighting the gas shows the location of nodes and antinodes. |
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Looking from the roof of the Monona Terrace convention center towards the capitol. |
Frank Lloyd Wright designed the convention center to bridge between the capitol and lake Monona. |
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Tom Senior shared a two-fan fan cart. The switch box he has in his hand can control each fan separately. |
Don Franklin got all of the disks spinning on the ring on the first try. |
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This compound pendulum was entered in the apparatus competion. The orange tip can be easily picked out when performing video analysis. Despite the chaotic nature of the motion, graphs display some interesting patterns which can be modeled using the Lagrangian of the motion, or so I'm told. |
Pasco will be marketing a new device for measuring velocities during rocket launches. It consists of a holder for a photogate head that contains a slot for the plastic film with the black bars. The plastic strip is attached to the rocket, so that when the rocket is launched, the plastic strip is pulled through the photogate beam. |
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This apparatus contest entry shows several pendulum arrays that can be placed on an overhead projector. The one on the left has a series of pendula all of the same period and independent of one another. The middle has a series of pendula that have the same period that are coupled by angled threads. The one on the right has pendula of a number of different periods. |
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