Angstrom Anders Jonas (Angstrom Anders Jonas)

(1814-1874)
Born August 13, 1814 in Legde (Sweden). In 1839 he graduated from the University of Uppsala, from 1858 - professor, head of the department of physics, in 1870-1871 - Rector of Uppsala University. Major works are devoted to spectral analysis. Study the spectra of the flame, electric arc of the sun. In a paper submitted to the Stockholm Academy in 1853, formulated one of the basic principles of optical spectroscopy, showing that the red-hot glowing gas emits light of similar wavelength, which is absorbed by the light of. In 1861, engaged in thorough investigations of the spectrum of sunlight, which led to the conclusion that the presence of hydrogen in the atmosphere of the Sun. In 1868 he published the first detailed atlas of the spectral lines of sunlight for many years remained an authoritative source of data. In 1867, he first studied the spectrum of the aurora borealis. There are studies Angstrom on the thermal conductivity, magnetism. In the name of the scientist called the Common Units of length used when measuring the lengths of light waves: 1 angstrom (1) = 10.8 cm. Angstrom was a member of the Royal Society of London (from 1870), in 1872 awarded the Rumford medal. Died Angstrom in Uppsala June 21, 1874.