Article ID: CBB001551055

Ruling Engines, Diffraction Gratings and Wavelength Measurements before the Rowland Era (2015)

unapi

Diffraction gratings have contributed enormously to modern science. Although some historians have written about them, there is much more to be brought to light. This paper discusses their development and use in the period up to about 1880 before Rowland began to produce them. Rittenhouse described the action of a diffraction grating in 1786, but no explanation was possible until the wave theory of light was developed. Fraunhofer discovered the dark lines in the solar spectrum in 1814, and then investigated diffraction, producing the first ruled gratings, making detailed measurements and calculating the wavelengths of prominent spectral lines. After Bunsen and Kirchhoff showed the association between spectral lines and chemical elements there was an upsurge of interest in measuring wavelengths. The gratings used in this work almost all came from one source, a relatively unknown instrument maker called Nobert, who made them by an extremely laborious process using a machine he had built himself. The most significant wavelength measurements were made by Ångström, but Mascart, Van der Willigen, Stefan, Ditscheiner and Cornu also did important work. Nobert gratings were investigated by Quincke, copied photographically by Rayleigh, and were known and discussed in the USA. Nobert's work helped to advance spectroscopy much more than has been acknowledged.

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Authors & Contributors
Cahan, David L.
Sarah Terrail-Lormel
Rudolf Filarski
Achbari, Azadeh
Wilson, Preston S.
Willmoth, Frances
Journals
Annals of Science: The History of Science and Technology
Nuncius: Annali di Storia della Scienza
Studies in History and Philosophy of Science Part C: Studies in History and Philosophy of Biological and Biomedical Sciences
Revue d'Histoire des Sciences
Osmanli Bilimi Arastirmalari: Studies in Ottoman Science
Notes and Records: The Royal Society Journal of the History of Science
Publishers
Sdu Uitgevers
Oxford University Press
Franz Steiner Verlag
Edizioni ETS
Cambridge University Press
Concepts
Cross-national interaction
Physics
Spectroscopy
Waves
Chemistry
Scientific apparatus and instruments
People
Helmholtz, Hermann Ludwig Ferdinand von
Morita, Masatake
Jansen, Marin Henri
Winogradsky, Serge
Tocqueville, Alexis de
Stallo, John Bernhard
Time Periods
19th century
20th century
20th century, early
20th century, late
18th century
17th century
Places
United States
Europe
Germany
Turkey
Netherlands
Russia
Institutions
Whipple Museum of the History of Science (Cambridge, Eng.)
United States Navy
U.S. Atomic Energy Commission
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