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The year 1913 in science and technology.

1 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.

2 Physics

• William Henry Bragg and William Lawrence Bragg work out the Bragg condition for strong X-ray reflection
• Niels BohrNiels Henrik David Bohr ( October 7, 1885 November 18, 1962) was a Danish physicist who made essential contributions to understanding atomic structure and quantum mechanics. Bohr's contributions to physics Bohr's model of atomic structure. The theory that presents his quantum model of the atomThe Bohr Model is a physical model that depicts the atom as a small positively charged nucleus with electrons in orbit at different levels, similar in structure to the solar system. It is named for the Danish physicist Niels Bohr. Developments in the fiel
• Robert MillikanRobert Andrews Millikan ( March 22, 1868 December 19, 1953) was an American physicist who won the 1923 Nobel Prize for Physics primarily for his work in determining the value of the charge on the electron and for the photoelectric effect. He later worked measures the fundamental unit of electric chargeThe elementary charge (symbol e or sometimes q is the electric charge carried by a single proton, or equivalently, the negative of the electric charge carried by a single electron. This is a fundamental physical constant and the unit of electric charge in
• Johannes StarkJohannes Stark ( April 15, 1874 June 21, 1957) was a prominent 20th century physicist, and a Physics Nobel Prize laureate. Born in Schickenhof, Bavaria, Stark was educated at the Bayreuth Gymnasium (grammar school) and later in Regensburg. His collegiate demonstrates that strong electric fields will split the Balmer spectral line series of hydrogen

3 Geology

• Albert Michelson measures tides in the solid body of the EarthEarth also known as the Earth or Terra is the planet on which we live, the third planet outward from the Sun. It is the largest of the solar system's terrestrial planets, and the only planetary body that modern science confirms as harbouring life. The pla

4 Technology

• Kinemacolor, the first commercial "natural color" system for movies is invented

5 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