Pleistocene

All parts to build 1 salt-powered robot

Whether you’re brushing up on atomic numbers or just adding a splash of scientific style

Color reference card for study and display

and uncertainty

radiometer eco toy PleistoceneWatch 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