File:Testing airplanes lenses used in map making. Washington, D.C., May 6. Dr. F.E. Washer of the U.S. Bureau of Standards testing the lens for the airplane cameras that are used by the Army and LCCN2016871637.jpg
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DescriptionTesting airplanes lenses used in map making. Washington, D.C., May 6. Dr. F.E. Washer of the U.S. Bureau of Standards testing the lens for the airplane cameras that are used by the Army and LCCN2016871637.jpg |
English: Title: Testing airplanes lenses used in map making. Washington, D.C., May 6. Dr. F.E. Washer of the U.S. Bureau of Standards testing the lens for the airplane cameras that are used by the Army and Navy. There are lights in the rear of the columnmeters and exposures are made on the photographic plate in front of the doctor. The lens are tested for distortion, focal length, and definition. This work must be very exacting as a small error would make an error of many miles on the maps made by the aerial cameras, 5/6/1937
Abstract/medium: 1 negative : glass ; 4 x 5 in. or smaller |
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Library of Congress
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Author | Harris & Ewing, photographer | ||
Permission (Reusing this file) |
No known restrictions on publication. For more information, see Harris & Ewing Photographs - Rights and Restrictions Information https://www.loc.gov/rr/print/res/140_harr.html
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Collection InfoField | Harris & Ewing Collection | ||
Notes InfoField |
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Part of InfoField | harris & ewing collection · prints and photographs division | ||
Subject InfoField | united states · district of columbia · washington (d.c.) · glass negatives | ||
Location InfoField | district of columbia | ||
Place InfoField | District of Columbia--Washington (D.C.) | ||
Genre InfoField | Glass negatives |
Licensing
[edit]Public domainPublic domainfalsefalse |
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This work is from the Harris & Ewing collection at the Library of Congress. According to the library, there are no known copyright restrictions on the use of this work. | ![]() |
Public domainPublic domainfalsefalse |
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This work is in the public domain in the United States because it was published in the United States between 1929 and 1977, inclusive, without a copyright notice. For further explanation, see Commons:Hirtle chart as well as a detailed definition of "publication" for public art.
Note that it may still be copyrighted in jurisdictions that do not apply the rule of the shorter term for US works (depending on the date of the author's death), such as Canada (50 p.m.a.), Mainland China (50 p.m.a., not Hong Kong or Macao), Germany (70 p.m.a.), Mexico (100 p.m.a.), Switzerland (70 p.m.a.), and other countries with individual treaties. العربية ∙ беларуская (тарашкевіца) ∙ čeština ∙ Deutsch ∙ Ελληνικά ∙ English ∙ español ∙ français ∙ Bahasa Indonesia ∙ italiano ∙ 日本語 ∙ 한국어 ∙ македонски ∙ Nederlands ∙ português ∙ русский ∙ sicilianu ∙ slovenščina ∙ ไทย ∙ Tiếng Việt ∙ 中文(简体) ∙ 中文(繁體) ∙ +/− |
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 01:37, 13 November 2018 | ![]() | 7,994 × 10,064 (9.28 MB) | Fæ (talk | contribs) | LOC upscale 813 × 1,024 → 7,994 × 10,064 |
13:42, 15 March 2018 | ![]() | 813 × 1,024 (136 KB) | Fæ (talk | contribs) | Library of Congress Harris & Ewing Collection 1937 LCCN 2016871637 jpg # 18,731 / 41,540 |
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