. . . "Henry Augustus Rowland (November 27, 1848 \u2013 April 16, 1901) was a U.S. physicist. Between 1899 and 1901 he served as the first president of the American Physical Society. He is remembered today particularly for the high quality of the diffraction gratings he made and for the work he did with them on the solar spectrum."@en . "1901Z"^^ . "1901-04-16Z"^^ . . "1848-11-27Z"^^ . . "Rowland, Henry Augustus"@en . . "Henry Augustus Rowland"@en . . "1848Z"^^ . . . . . . . "American physicist" . . . . .