GEORGE BERNARD / SCIENCE PHOTO LIBRARY GEORGE BERNARD / SCIENCE PHOTO LIBRARY
William Henry Fox Talbot. Historical portrait of British photographic chemist William Henry Fox Talbot (1800-77). His photographic system for making prints on silver chloride paper was announced in 1839, the same year as the invention of the daguerreotype. In 1842, he patented the first type of negative (calotype) from which prints could be made. He was consequently awarded the Royal Society's Rumford Medal. He also developed a method for making instantaneous photographs using electric spark illumination, in 1851. His Pencil of Nature (1844) was the first book to be illustrated with photographs. He also published works on astronomy and mathematics.
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