Henry Augustus Rowland

Henry Augustus Rowland ForMemRS HonFRSE
Born	(1848-11-27)November 27, 1848 Honesdale, Pennsylvania, U.S.
Died	April 16, 1901(1901-04-16) (aged 52) Baltimore, Maryland, U.S.
Alma mater	Rensselaer Polytechnic Institute
Known for	Diffraction grating Rowland circle Rowland ring
Awards	Rumford Prize (1883) Henry Draper Medal (1890) Matteucci Medal (1895)
Scientific career
Fields	Physicist
Institutions	University of Wooster Rensselaer Polytechnic Institute Johns Hopkins University
Academic advisors	Hermann von Helmholtz
Doctoral students	Joseph Sweetman Ames Louis Bell Edwin Hall William Jackson Humphreys Charles Elwood Mendenhall Harry Fielding Reid Albert Francis Zahm
Signature

Henry Augustus Rowland ForMemRS HonFRSE (November 27, 1848 – April 16, 1901) was an American physicist and Johns Hopkins educator. Between 1899 and 1901 he served as the first president of the American Physical Society. He is remembered for the high quality of the diffraction gratings he made and for the work he did with them on the solar spectrum.