See also: 1873 in science, other events of 1874, 1875 in science and the list of years in science.
Chemistry Per Teodor Cleve discovers that didymium is in fact two elements, now known as neodymium and praseodymium Technology Invention of barbed wire by Joseph Glidden Awards Copley Medal: Louis Pasteur Wollaston Medal: Oswald Heer Births April 25 - Guglielmo Marconi, inventor († 1937) Deaths January 24 – Johann Philipp Reis, physicist, inventor (* 1834) March 28 - Peter Andreas Hansen, astronomer (* 1795)
