Main Page | See live article | Alphabetical index The year 1913 CE in science and technology. See also: 1912 in science, other events of 1913, 1914 in science and the list of years in science. Table of contents 1 Chemistry 2 Physics 3 Geology 4 Technology 5 Nobel Prizes 6 Births 7 Deaths Chemistry Protactinium was first identified by Kasimir Fajans and O. H. Göhring Henry Moseley shows that nuclear charge is the real basis for numbering the elements and discovers a systematic relation between wavelength and atomic number by using x-ray spectra obtained by diffraction in crystals. Physics William Bragg and Lawrence Bragg work out the Bragg condition for strong X-ray reflection Niels Bohr presents his quantum model of the atom Robert Millikan measures the fundamental unit of electric charge Johannes Stark demonstrates that strong electric fields will split the Balmer spectral line series of hydrogen Geology Albert Michelson measures tides in the solid body of the Earth Technology Kinemacolor, the first commercial "natural color" system for movies is invented Nobel Prizes Heike Kamerlingh-Onnes is awarded the Nobel Prize for Physics Alfred Werner is awarded the Nobel Prize for Chemistry Charles Robert Richet is awarded the Nobel Prize for Medicine Births March 26 - Paul Erdös, mathematician Deaths November 7 - Alfred Russel Wallace, biologist This article is from Wikipedia. All text is available under the terms of the GNU Free Documentation License.