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Young geologists and crystal collectors
night-shift warriors
The egg cell is 85
and yet it controls everything you do
or cheering up someone in recovery
radiometer STEM plush toys Young geologists and crystal collectorsWatch Light Turn into Motion with the Solar Radiometer! Invented in 1873, this beautiful glass Radiometer transforms light into gentle movement. When exposed to sunlight or a lamp, the vanes spin inside their vacuum sealed globe, illustrating the conversion of light into kinetic energy. Each of the four vanes has a black side and a white side, causing them to rotate as photons strike them. A mesmerizing fusion of physics, history, and aesthetics, this
