talus comotion c((motion

What is scoop?
An amusement. The bow-tie spinner rotates when placed in bright sunlight on a counter or windowsill.

1.5" cube base of aluminum
6" high
stainless steel cantilever
silver bearing
spinner made from c))motion plastic

How does it work?
The two c))motion strips curl in opposite directions. When exposed to sunlight or a bright desk lamp, they uncurl asymmetrically, shifting the center of mass. So the spinner rotates.

Two strips are needed to cancel out any offsets created by variations in ambient temperature. That is, a hot summer day uncurls both strips symmetrically, so the spinner remains unmoved. It is the asymmetry of a light source which pulls one curl farther from the axle than the other.
How bright ?
It takes about 15,000 lux for the scoop to begin spinning. For comparison, full sun at noon is 100,000 lux. A bright desk lamp, about a foot away, also works. Note the scoop will start spinning at lower light levels than a desk radiometer.
Yes. See US Patent 6966812
Limited, numbered edition of 20. Click on info button to order. Three-arm tripus series sold out.
Other examples of solar rockers and Ferris wheels can be found at genuineideas
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