Angstrom

Angstrom, Anders Jonas, a Swedish physicist, born in 1814, after holding several minor appointments in the University of Upsala, became professor of physics in 1858. He wrote on heat, magnetism, and optics, but his most valuable contributions to science relate to the spectroscope. In the Recherches sur le Spectre Solaire (1869) he carried forward Kirchhoff's great discovery, and he investigated the spectra of gaseous substances. He died in 1874.