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Solar hot box linkhorace de saussure, one of europe’s foremost naturalists of the period, observed: "it is a known fact, and a fact that has probably been known for a long time, that a room, a carriage, or any other place is hotter when the rays of the sun pass through glass
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Scientists discover electricity in Selenium William Grylls Adams along with a student of his, Richard Day, discovered that when selenium was exposed to light, it produced electricity. An electricity expert, Werner von Siemens, stated that the discovery was "scientifically of the most far-reaching importance". The selenium cells were not efficient, but it was proved that light, without heat or moving parts, could be converted into electricity.
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Clarence Kemp pattented solar hot water heater in 1891
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Albert Einstein published his paper on the photoelectric effect (along with a
paper on his theory of relativity). -
Photovoltaic technology is born in the United States when Daryl Chapin,
Calvin Fuller, and Gerald Pearson develop the silicon photovoltaic (PV) cell at
Bell Labs
