1879
Since time immemorial, human beings had to set things on fire if they wanted to see in the dark. Then, in 1879, Thomas Alva Edison turned night to day in his laboratory in Menlo Park, New Jersey, when he applied voltage to a cotton thread filament in a glass bulb. The era of electric lights had arrived.
Pages: Page 1, Page 2, Page 3, Page 4, Page 5, Page 6, Page 7, Page 8, Page 9, Page 10, Page 11, Page 12, Page 13, Page 14, Page 15, Page 16, Page 17, Page 18, Page 19, Page 20, Page 21, Page 22, Page 23, Page 24, Page 25, Page 26, Page 27, Page 28, Page 29, Page 30, Page 31, Page 32, Page 33, Page 34, Page 35, Page 36, Page 37, Page 38, Page 39, Page 40, Page 41
