Technical Highlights of the National Bureau of StandardsU.S. Department of Commerce, National Bureau of Standards, 1960 |
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Page vii
... signals used to study structure of iono- sphere . Meteor burst propagation observations successful . Observatory installed at Maui , Hawaii .. IGY world data center A. 141 141 141 142 142 2.3.5 . Cryogenic engineering .. 143 ...
... signals used to study structure of iono- sphere . Meteor burst propagation observations successful . Observatory installed at Maui , Hawaii .. IGY world data center A. 141 141 141 142 142 2.3.5 . Cryogenic engineering .. 143 ...
Page 2
... trans- mitted directly along the surface of the earth rather than by reflection from the ionosphere , the received signals are much more stable . This permits their transmission over great distances with greater accuracy than the 2.
... trans- mitted directly along the surface of the earth rather than by reflection from the ionosphere , the received signals are much more stable . This permits their transmission over great distances with greater accuracy than the 2.
Page 8
... signals received from satellites , CRPL has been able to study the structure of the upper part of the ionosphere , measuring the density of electrons and other characteristics . Current studies are investi- gating the size , shape , and ...
... signals received from satellites , CRPL has been able to study the structure of the upper part of the ionosphere , measuring the density of electrons and other characteristics . Current studies are investi- gating the size , shape , and ...
Page 29
... Signals of importance in acoustics can be studied as waveforms of voltage varying as a function of time , but are ... signal . The limitation depends only on the signal - to - noise energy ratio at the input to the system . The ...
... Signals of importance in acoustics can be studied as waveforms of voltage varying as a function of time , but are ... signal . The limitation depends only on the signal - to - noise energy ratio at the input to the system . The ...
Page 42
... signals , sinewave rf signals , and rf and microwave noise and impedance . These conferences help define what ranges and accuracies are most needed in these fields , why they are needed , and what immediate and long - range action might ...
... signals , sinewave rf signals , and rf and microwave noise and impedance . These conferences help define what ranges and accuracies are most needed in these fields , why they are needed , and what immediate and long - range action might ...
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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 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.