Technical Highlights of the National Bureau of StandardsU.S. Department of Commerce, National Bureau of Standards, 1960 |
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Page 3
... constant motion , so that much can be learned about the ultimate nature of matter . As the success of physical research at the low temperatures depends to a great extent upon the accuracy with which temperatures can be measured in this ...
... constant motion , so that much can be learned about the ultimate nature of matter . As the success of physical research at the low temperatures depends to a great extent upon the accuracy with which temperatures can be measured in this ...
Page 23
... constant for slit- widths up to 2 mp . The standard also shows other bands between 380 and 650 mμ that are useful to supplement other standards used for this range . The new glass , with certified values of the wavelengths of 11 ...
... constant for slit- widths up to 2 mp . The standard also shows other bands between 380 and 650 mμ that are useful to supplement other standards used for this range . The new glass , with certified values of the wavelengths of 11 ...
Page 36
... constant over long periods of time , uniform throughout the Nation , and compatible with other standards used throughout the world . Measurements of electrical quantities directly in terms of length , mass , and time ( " absolute ...
... constant over long periods of time , uniform throughout the Nation , and compatible with other standards used throughout the world . Measurements of electrical quantities directly in terms of length , mass , and time ( " absolute ...
Page 38
... constant of boric oxide is under study at the Bureau . At frequencies from 1 to 2 kc / s , both dielectric constant and loss increase sharply above 500 ° C ; the dielectric constant rises to above 300 at 900 ° C , indicating that very ...
... constant of boric oxide is under study at the Bureau . At frequencies from 1 to 2 kc / s , both dielectric constant and loss increase sharply above 500 ° C ; the dielectric constant rises to above 300 at 900 ° C , indicating that very ...
Page 44
... constant to at least 2 × 10-12 over the year . In an initial experiment with thallium , a thallium beam was ... constantly controls the cavity tuning of the maser . The correction signal is obtained by Zeeman modulation of the ammonia ...
... constant to at least 2 × 10-12 over the year . In an initial experiment with thallium , a thallium beam was ... constantly controls the cavity tuning of the maser . The correction signal is obtained by Zeeman modulation of the ammonia ...
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Page 177 - Handbooks — Recommended codes of engineering and industrial practice (including safety codes) developed in cooperation with interested industries, professional organizations, and regulatory bodies. Special Publications...
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Page 69 - These guides, which are generally consistent with the recommendations of the National Council on Radiation Protection and Measurements (NCRP) and the International Commission on Radiological Protection (ICRP), have been adopted by the Atomic Energy Commission in the development of its radiation protection standards.
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Page 189 - RG Mathey and D. Watstein: Investigation of Bond in Beam and Pullout Specimens with High-yield-strength Deformed Bars, /. ACI, vol.
Page 241 - Research on crystal growth and characterization at the National Bureau of Standards during the period January to June 1963, ed.
Page 159 - The custody, maintenance, and development of the national standards of measurement, and the provision of means and methods for making measurements consistent with those standards, including the comparison of standards used in scientific investigations, engineering, manufacturing, commerce, and educational institutions with the standards adopted or recognized by the Government.
Page 153 - A new guide to information resources in the social sciences has been published by the National Referral Center for Science and Technology at the Library of Congress.
Page 191 - No. 1, 1-29 (July 1961). Reinhart, FM, Twenty-year atmospheric corrosion investigation of zinc-coated and uncoated wire and wire products, Am. Soc. Testing Materials Spec. Tech. Publ. 290, 1-141 (June 1961). Time standards, AG McNish, Instr. and Control Systems 33, 1340-1341 (Aug.