File:Helmholtz coils in free radical experiment NBS 1957.jpg
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Summary
| Description |
English: Research on en:free radicals in 1957 at the US National Bureau of Standards (now NIST) The radicals are bombarded with electrons inside the vacuum chamber (center). The chamber is surrounded by Helmholtz coils (hoops) on three axes which are adjusted to cancel external magnetic fields in the chamber. Caption: Apparatus for measuring the energy loss of bombarding electrons passing through a free radical condensate |
| Date | |
| Source | Retrieved January 30, 2014 from Annual Report 1957, Research Highlights of the National Bureau of Standards, miscellaneous publication 226, US Government Printing Office, p. 30 on Google Books |
| Author | A. V. Astin, director of Bureau of Standards, is listed on title page |
Licensing
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This work is in the public domain in the United States because it is a work prepared by an officer or employee of the United States Federal Government as part of that person’s official duties under the terms of Title 17, Chapter 1, Section 105 of the US Code.
Note: This only applies to original works of the Federal Government and not to the work of any individual U.S. state, territory, commonwealth, county, municipality, or any other subdivision. This template also does not apply to postage stamp designs published by the United States Postal Service since 1978. (See § 313.6(C)(1) of Compendium of U.S. Copyright Office Practices). It also does not apply to certain US coins; see The US Mint Terms of Use.
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| This file has been identified as being free of known restrictions under copyright law, including all related and neighboring rights. | ||
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 23:12, 30 January 2014 | | 1,114 × 848 (276 KB) | wikimediacommons>Chetvorno | User created page with UploadWizard |
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