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The sun makes it run! Discover the fascinating world of solar power as the radiometer in the glass sphere sPINS from the heat of the sun.
The sun makes it run! Discover the fascinating world of solar power as the radiometer in the glass sphere sPINS from the heat of the sun. The vanes are dark and light in colour - the dark vanes absorb the rays, and the light vanes reflect the rays. Ages 8 and up.
