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Rontgen, Wilhelm Conrad (1845-1923). German physicist. Discovered Roentgen rays or X-ray (1895)Wilhelm Conrad Rontgen (1845-1923). German physicist. Discovered Rontgen rays or X-ray (1895). In 1901 he was awarded the Nobel Prize in Physics. Rontgen exploring a child with X-ray device by 1900
Phonoplex telegraph invented by Thomas Alva Edison (1847-1931). Engraving
Experiments on the phone from Dr. Alexander Graham Bell (1847-1922), to transmit the human voice over long distances. Boston, 1877, USA. 19th-century colored engraving
Africa. European settler instructing the natives by a projection with the unit called Magic Lantern. Colored engraving from 1879
WATT, James (Greenok 1736-Heathfield, 1819). Scottish inventor and mechanical engineer. Nineteenth-century engraving
Newcomen steam engine invented by Thomas Newcomen in 1712. It consisted of a pump designed to reduce water steam in the galleries of mines. Engraving
