We often think of solar-powered devices as pretty new. But we’ve been harnessing the sun since long before the first practical solar cell was introduced back in 1954
. For instance, in these solar-powered contraptions from a 1937 Popular Science film — including the amazing fridge that turned sunbeams into ice cubes in just two hours!
Source: Gizmodo – The Solar-Powered Fridge of 1937 Made Sunbeams Into Ice Cubes In 2 Hours