The nucleus of the group was the well established NBS Cryogenic Physics Section which had a forty-five year heritage in low temperature reseach and development. At the request of the US Atomic Energy Commission, the design and construction of a large hydrogen liquifier was commenced and in late 1951
โฆ LIBER โฆ
Interferometric measurement of length scales at the National Bureau of Standards
โ Scribed by J.S. Beers; Kang B. Lee
- Publisher
- Elsevier Science
- Year
- 1982
- Tongue
- English
- Weight
- 794 KB
- Volume
- 4
- Category
- Article
- ISSN
- 0141-6359
No coin nor oath required. For personal study only.
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During the war, radio amateurs of the United States participated in three observing projects sponsored by the Bureau, the object of which was to obtain basic data urgently needed in making radio propagation predictions for the Allied Armed Forces. The first two projects called NBS-ARRL projects I an