Article ID: CBB936872789

Ruling Engines and Diffraction Gratings Before Rowland: The Work of Lewis Rutherfurd and William Rogers (2018)

unapi

Diffraction gratings are famously associated with Henry Rowland of Johns Hopkins University but there were precursors. Although gratings were first made and used in Europe, reliable machines for ruling gratings were developed in the USA, and two men, Lewis Rutherfurd and William Rogers, tackled the problem before Rowland. Rutherfurd, a wealthy independent astronomer, designed and built the first screw-operated engine for ruling diffraction gratings, the fore-runner of almost all subsequent ruling engines. With it he and his assistant D. C. Chapman ruled many gratings which he generously distributed to practising scientists, thereby materially advancing the science of spectroscopy. Rogers was a Harvard astronomer who developed an interest in the ruling of fine lines on glass that led him to construct a ruling engine with which he investigated the causes of the errors in the rulings he had examined. He continued to seek improvements with a second engine designed for ruling diffraction gratings. He ceased developing this engine when Rowland’s excellent gratings began to be available, concentrating instead on related problems to which he could apply the knowledge and skills he had gained, but his investigations assisted Rowland and other later ruling engine builders. This paper brings together what is known about the ruling engines of Rutherfurd and Rogers, their development, the gratings they produced, their quality and the work that was done with them, and assesses and compares their achievements and the impacts of the work of these two men.

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Authors & Contributors
Sweetnam, George Kean
Hentschel, Klaus
Brown, C. N.
Lessing, Peter
Adams, Sean Patrick
Freiburger, Dana A.
Journals
Nuncius: Annali di Storia della Scienza
Annals of Science: The History of Science and Technology
Historical Studies in the Physical and Biological Sciences
Earth Sciences History: Journal of the History of the Earth Sciences Society
Virginia Magazine of History and Biography
Physis: Rivista Intemazionale di Storia della Scienza
Publishers
American Philosophical Society
Johns Hopkins University Press
Princeton University
Concepts
Spectroscopy
Physics
Scientific apparatus and instruments
Astronomy
Geology
Societies; institutions; academies
People
Rowland, Henry Augustus
Rogers, William Barton
Jewell, Lewis E.
Hotchkiss, Jedediah
Rogers, Henry Darwin
Nagaoka, Hantarō
Places
North America: United States; Canada
Japan
France
United States
Europe
Times
19th century
20th century, early
Edo Era (Japan, 1603-1868)
20th century
Institutions
Massachusetts Institute of Technology, MIT
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