Rowland Solar Spectrum
Rowland Solar Spectrum
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- Description
- Henry A. Rowland, the first professor of physics at The Johns Hopkins University in Baltimore, Md., produced a photographic map of the solar spectrum using concave diffraction gratings made with his own ruling engine. The first edition, published in 1886, covered the region from wave-length 3100 to 5790. The scale of these maps was much greater than the maps of Angstrom or Rutherfurd, and they showed many more spectral lines. This set has five of the original seven plates.
- 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 3/16 in x 35 3/8 in; 28.41625 cm x 89.8525 cm
- ID Number
- PH.322957.03
- accession number
- 249200
- catalog number
- 322957.03
- 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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