Solar Spectrum

Solar Spectrum

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Description
“PHOTOGRAPHIC MAP OF THE SOLAR SPECTRUM / MADE BY PROF. H. A. ROWLAND, JOHNS HOPKINS UNIVERSITY.” The scale extends from 44.8 to 49.4 units.
Henry A. Rowland, the first professor of physics at Johns Hopkins University in Baltimore, Md., produced a photographic map of the solar spectrum using concave diffraction gratings made with his own ruling engine. This is a section of the first edition, published in 1886.
Ref: “Photograph of the Normal Solar Spectrum. Made by Professor H. A. Rowland,” Johns Hopkins University Circular 5 (1886).
Location
Currently not on view
Object Name
spectrum photograph
date made
1886
maker
Rowland, Henry A.
place made
United States: Maryland, Baltimore
Measurements
overall: 11 1/8 in x 35 3/8 in; 28.2575 cm x 89.8525 cm
ID Number
PH.322957.05
accession number
79596Z12
249200
catalog number
322957.05
Credit Line
Columbia University
See more items in
Medicine and Science: Physical Sciences
Science & Mathematics
Data Source
National Museum of American History
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