Annual Report of the National Bureau of StandardsU.S. Government Printing Office, 1965 |
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Page 6
... methods of testing . This need for excellence was well summarized in 1953 by the ad hoc committee which evaluated the function and operation of the National Bureau of Standards in relation to national needs : " It is not sufficient to ...
... methods of testing . This need for excellence was well summarized in 1953 by the ad hoc committee which evaluated the function and operation of the National Bureau of Standards in relation to national needs : " It is not sufficient to ...
Page 16
... methods of spectral classification of other types of noise . U. S. Frequency Standard Reevaluated . — An extensive ... method of determining phase shifts in the atomic beam frequency standards . This improved method and understanding ...
... methods of spectral classification of other types of noise . U. S. Frequency Standard Reevaluated . — An extensive ... method of determining phase shifts in the atomic beam frequency standards . This improved method and understanding ...
Page 19
... methods of realizing this standard are thus under way . One proposal being investigated is to define the standard of luminous intensity by absolute photometry in terms of the radiation in watts from a source multiplied by the response ...
... methods of realizing this standard are thus under way . One proposal being investigated is to define the standard of luminous intensity by absolute photometry in terms of the radiation in watts from a source multiplied by the response ...
Page 30
... methods to increase the system sta- bility and improve measurement accuracy . The reflectometer uses a precision ... method . Besides their use as a supplement to the Dictionary of Color Names , these centroid colors can be used for a ...
... methods to increase the system sta- bility and improve measurement accuracy . The reflectometer uses a precision ... method . Besides their use as a supplement to the Dictionary of Color Names , these centroid colors can be used for a ...
Page 37
... methods are being studied . In one method , the entire pulse of radiant energy from the laser is absorbed within a liquid - filled calorimeter , and the temperature rise of the liquid is measured by means of a thermocouple . In the ...
... methods are being studied . In one method , the entire pulse of radiant energy from the laser is absorbed within a liquid - filled calorimeter , and the temperature rise of the liquid is measured by means of a thermocouple . In the ...
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Popular passages
Page 23 - THE INSTITUTE FOR BASIC STANDARDS provides the central basis within the United States of a complete and consistent system of physical measurement; coordinates that system with measurement systems of other nations; and furnishes essential services leading to accurate and uniform physical measurements throughout the Nation's scientific community, industry, and commerce.
Page 37 - The second is the duration of 9 192 631 770 periods of the radiation corresponding to the transition between the two hyperfine levels of the ground state of the caesium- 133 atom.
Page 150 - Provides quantitative data on the physical and chemical properties of materials, compiled from the world's literature and critically evaluated.
Page 117 - Heat. Temperature Physics. Heat Measurements. Cryogenic Physics. Equation of State. Statistical Physics. Radiation Physics. X-ray. Radioactivity. Radiation Theory. High Energy Radiation. Radiological Equipment.
Page 1 - These include the development and maintenance of the national standards of measurement and the provision of means and methods for making measurements consistent with these standards: the determination of physical constants and properties of materials; the development of methods and instruments for testing materials, devices, and structures; advisory services to government agencies on scientific and technical problems...
Page 151 - Legibility of Alphanumeric Characters and Other Symbols; I. A Permuted Title Index and Bibliography.
Page 6 - reasonably good," it must be superior. It is not sufficient to have fairly good standards of measurement ; fairly good methods of testing materials, mechanisms or structures ; or reasonably good determination of important physical constants. The standards, the measurements, the test procedures must be the very best, the most accurate, the most reliable that can possibly be achieved at any given time, limited only by the state of the art at the time. It is thus more than a play on words to say that...
Page 13 - Subcommittee on Science, Research and Development, House Committee on Science and Astronautics, opened hearings on problems of the Government-Science relationship.
Page 152 - CERC publications are available from the Clearinghouse for Federal Scientific and Technical Information, 5285 Port Royal Road, Springfield, Virginia 22151.
Page 79 - Bureau is a principal focal point in the Federal Government for assuring maximum application of the physical and engineering sciences to the advancement of technology in industry and commerce.