Solar Spectrum

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).

Date Made: 1886

Maker: Rowland, Henry A.

Location: Currently not on view

Place Made: United States: Maryland, Baltimore

See more items in: Medicine and Science: Physical Sciences, Science & Mathematics

Exhibition:

Exhibition Location:

Credit Line: Columbia University

Data Source: National Museum of American History

Id Number: PH.322957.05Accession Number: 79596Z12249200Catalog Number: 322957.05

Object Name: spectrum photograph

Measurements: overall: 11 1/8 in x 35 3/8 in; 28.2575 cm x 89.8525 cm

Guid: http://n2t.net/ark:/65665/ng49ca746b3-1d91-704b-e053-15f76fa0b4fa

Record Id: nmah_1826130

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