Author: andrei

Pluto discovered, 1930

In 1894 the American businessman Percival Lowell founded an observatory in Flagstaff, Arizona, where he dedicated himself to astronomical research. His theories about canals on Mars resulted in the scientific…

Edison patented the phonograph, 1878

In March 1857, the French printer and bookseller, Édouard-Léon Scott de Martinville, patented the first device for recording sound, the phonautograph. His invention inscribed an image on a cylinder coated…