File:SpectroscopyResearch 006.jpg
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Summary[edit]
| Description | Arc spectra of copper [top] over wavelength range of 3400 to 3860A; standard tungsten lamp spectrum [bottom] at 50A intervals. Both recorded through a rotating stepped sector. | |||
| Date | 4/3/1961 | |||
| Source | National Institute of Standards and Technology | |||
| Author | National Institute of Standards and Technology | |||
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This image is in the public domain in the United States because it is a work of the United States Federal Government, specifically an employee of the National Institute of Standards and Technology, under the terms of Title 17, Chapter 1, Section 105 of the US Code.
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 15:33, 11 March 2014 | | 5,993 × 4,779 (19.1 MB) | NISTResearchLibrary (talk | contribs) |
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