• Thumbnail for Henry Augustus Rowland
    Henry Augustus Rowland (November 27, 1848 – April 16, 1901) was an American physicist and Johns Hopkins educator. Between 1899 and 1901 he served as the...
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  • Henry Rowland may refer to: Henry Augustus Rowland (1848–1901), American physicist Henry Augustus Rowland (minister) (1804–1859), American minister Henry...
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  • Henry Augustus Rowland (September 18, 1804 – September 4, 1859) was an American minister. He was the son of Rev. Henry A. Rowland of Windsor, Connecticut...
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  • Thumbnail for Diffraction grating
    the lead. By the end of the 19th century, the concave gratings of Henry Augustus Rowland (1848–1901) were the best available. A diffraction grating can create...
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  • Thumbnail for Edwin Hall
    working on his doctoral thesis in Physics under the supervision of Henry Augustus Rowland. Hall's experiments in electromagnetics consisted of exposing thin...
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  • carcinologist Henry Augustus Rawes (1826–1885), Catholic hymn writer and preacher Henry Augustus Rowland (1848–1901), U.S. physicist Henry Augustus Stephen...
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  • Thumbnail for Henry August Rowland House
    The Henry August (or Augustus) Rowland House is a historic row house at 915 Cathedral Street in Baltimore, Maryland. Built in the 1880s, this nondescript...
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  • Thumbnail for Hermann von Helmholtz
    Heinrich Kayser, Eugen Goldstein, Wilhelm Wien, Arthur König, Henry Augustus Rowland, Albert A. Michelson, Wilhelm Wundt, Fernando Sanford and Michael...
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  • sample of magnetic material. It was developed by Henry Augustus Rowland. The geometry of a Rowland's ring is usually a toroid of magnetic material around...
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  • Thumbnail for Magnetic circuit
    law, after John Hopkinson, but was actually formulated earlier by Henry Augustus Rowland in 1873. It states that F = Φ R . {\displaystyle {\mathcal {F}}=\Phi...
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  • Heinrich Hertz 1894 John William Strutt, 3rd Baron Rayleigh 1895 Henry Augustus Rowland 1896 Wilhelm Röntgen and Philipp Lenard 1901 Guglielmo Marconi 1903...
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  • Thumbnail for Magnetomotive force
    encountered. The term magnetomotive force was coined by Henry Augustus Rowland in 1880. Rowland intended this to indicate a direct analogy with electromotive...
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  • Thumbnail for J. Robert Oppenheimer
    Oppenheimer traveled to Washington to hand-deliver a letter to Secretary of War Henry L. Stimson expressing his revulsion and his wish to see nuclear weapons...
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  • Thumbnail for Magnetic reluctance
    law for closed electric circuits, is attributed to Henry Augustus Rowland in an 1873 paper. Rowland is also responsible for coining the term magnetomotive...
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  • Thumbnail for John Hopfield
    1899–1925 Henry Augustus Rowland (1899) Albert A. Michelson (1901) Arthur Gordon Webster (1903) Carl Barus (1905) Edward Leamington Nichols (1907) Henry Crew...
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  • Thumbnail for Henry A. Bumstead
    and took up an interest in that subject. He studied physics with Henry Augustus Rowland and found his calling there. In 1891 he obtained the bachelor's...
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  • Joseph Sylvester; the biologist H. Newell Martin; the physicist Henry Augustus Rowland, the first president of the American Physical Society, the classical...
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  • Thumbnail for Chien-Shiung Wu
    Their Lives, Struggles, and Momentous Discoveries (Revised ed.). Joseph Henry Press. pp. 254–260. ISBN 978-0-309-07270-0. Wang, Zuoyue (1970–1980). "Wu...
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  • Thumbnail for Screw-cutting lathe
    standards still exist).[citation needed] In the late 19th century Henry Augustus Rowland found a need for very high precision screws in cutting diffraction...
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  • "Kibo" Parry, satirist, Usenet personality, and typeface designer Henry Augustus Rowland (1870), first president of the American Physical Society; Johns...
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  • Thumbnail for Robert Serber
    1899–1925 Henry Augustus Rowland (1899) Albert A. Michelson (1901) Arthur Gordon Webster (1903) Carl Barus (1905) Edward Leamington Nichols (1907) Henry Crew...
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  • Henry Willis (born 1821), English organ builder. February 21 – George FitzGerald (born 1851), Irish physicist. April 16 – Henry Augustus Rowland (born...
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  • Thumbnail for Lyman James Briggs
    Washington, he also continued his research at Johns Hopkins under Henry Augustus Rowland. Although he spent time working with the newly discovered Roentgen...
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  • Thumbnail for Enrico Fermi
    1899–1925 Henry Augustus Rowland (1899) Albert A. Michelson (1901) Arthur Gordon Webster (1903) Carl Barus (1905) Edward Leamington Nichols (1907) Henry Crew...
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  • Thumbnail for X-ray spectroscopy
    wavelength and, finally, a detector is placed at their focal points. Henry Augustus Rowland (1848–1901) devised an instrument that allowed the use of a single...
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  • Thumbnail for Felix Bloch
    1899–1925 Henry Augustus Rowland (1899) Albert A. Michelson (1901) Arthur Gordon Webster (1903) Carl Barus (1905) Edward Leamington Nichols (1907) Henry Crew...
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  • Thumbnail for History of electromagnetic theory
    Schwers'sehen Buchhandl Handl. In Kiel.) Rowland, H. A. (1902). The physical papers of Henry Augustus Rowland: Johns Hopkins University, 1876–1901. Baltimore:...
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  • Thumbnail for Edward Mills Purcell
    discovered nuclear magnetic resonance (NMR) with his colleagues Robert Pound and Henry Torrey. NMR provides scientists with an elegant and precise way of determining...
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  • Thumbnail for David Gross
    1899–1925 Henry Augustus Rowland (1899) Albert A. Michelson (1901) Arthur Gordon Webster (1903) Carl Barus (1905) Edward Leamington Nichols (1907) Henry Crew...
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  • Henry DeWolf "Harry" Smyth (/ˈhɛnri dəˈwʊlf ˈsmaɪθ/; May 1, 1898 – September 11, 1986) was an American physicist, diplomat, and bureaucrat. He played...
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