Journal of Research of the National Bureau of Standards, Volume 88U.S. Department of Commerce, National Bureau of Standards, 1983 |
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Page 24
... t + 1 ) = X ( t + 1 | t ) + B ' ( t + 1 ) D ( t + 1 ) , ( A.8 ) and ( 4.17 ) - P ( t + 1 + 1 ) = Pt + 1 | t ) B ' ( t + 1 ) B ( t + 1 ) . ( A.9 ) - Equivalent Glass Type Nominal Transmittance Transmission Density NG - 11 24.
... t + 1 ) = X ( t + 1 | t ) + B ' ( t + 1 ) D ( t + 1 ) , ( A.8 ) and ( 4.17 ) - P ( t + 1 + 1 ) = Pt + 1 | t ) B ' ( t + 1 ) B ( t + 1 ) . ( A.9 ) - Equivalent Glass Type Nominal Transmittance Transmission Density NG - 11 24.
Page 25
... density glass ; passband effects ; polarization effects ; polynomial fitting ; spectrophotometry ; statistics ; transmit- tance standards . 1. Introduction This paper deals with the preparation and calibration of neutral density glass ...
... density glass ; passband effects ; polarization effects ; polynomial fitting ; spectrophotometry ; statistics ; transmit- tance standards . 1. Introduction This paper deals with the preparation and calibration of neutral density glass ...
Page 26
... density . Since the transmission density is linear with thickness , it is possible to determine , by graphical techniques , the required thickness for a desired transmittance value . Figure 1 shows the relation- ship of transmission density ...
... density . Since the transmission density is linear with thickness , it is possible to determine , by graphical techniques , the required thickness for a desired transmittance value . Figure 1 shows the relation- ship of transmission density ...
Page 27
... density curves of these filters in the spectral range between approximately 440 nm and 620 nm shows that the absorptions appear at the same wavelengths for the different concentrations associated with these glass types . Figures 2 ...
... density curves of these filters in the spectral range between approximately 440 nm and 620 nm shows that the absorptions appear at the same wavelengths for the different concentrations associated with these glass types . Figures 2 ...
Page 47
... density and elastic properties of the specimen . It therefore has value in studying other kinds of specimens than those which were the primary subject of this investigation . Analytical Chemistry NBSIR 82-2496 . Jones , F. E. ...
... density and elastic properties of the specimen . It therefore has value in studying other kinds of specimens than those which were the primary subject of this investigation . Analytical Chemistry NBSIR 82-2496 . Jones , F. E. ...
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absorbed dose accelerometer analysis application Aroclor atomic atomic clocks Available beam biweight Bureau of Standards calculated calibration calorimeter Chem chemical chromospheres clock CoCo(hcp coefficient constant coulometric cryostat curves densimeter density detector determined developed dielectric constant discussed drift effects electrical electron energy engineering equation error estimated evaluation experimental field Figure filter fire flow frequency function heat Key words laboratory laser liquid magnetic maser materials measurements mechanical methane method molecular National Bureau Natl NBSIR neutron NTIS nuclear orientation observed obtained optical paper parameters particle performance photomasks photon Phys pipe polystyrene pressure Proc procedures properties radiation range refractive index resonance sample scattering solid specimen spectra standard deviation structure superconducting surface techniques temperature thermal thermistor thermodynamic thermometry transition transmittance uncertainty values velocity vertex-transitive graph voltage wavelength y-RA thermometers y-ray
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Page 239 - Monographs — Major contributions to the technical literature on various subjects related to the Bureau's scientific and technical activities. Handbooks — Recommended codes of engineering and industrial practice (including safety codes) developed in cooperation with interested industries, professional organizations, and regulatory bodies. Special Publications — Include proceedings of conferences sponsored by NBS.
Page 372 - Standards' was established by an act of Congress March 3, 1901. The Bureau's overall goal is to strengthen and advance the Nation's science and technology and facilitate their effective application for public benefit. To this end, the Bureau conducts research and provides...
Page 239 - National Standard Reference Data Series — Provides quantitative data on the physical and chemical properties of materials, compiled from the world's literature and critically evaluated.
Page 90 - A special series of interim or final reports on work performed by NBS for outside sponsors (both government and non-government). In general, initial distribution is handled by the sponsor; public distribution is by the National Technical Information Services (Springfield, Va.
Page 354 - Commission" means the Federal Trade Commission. (c) As soon as practicable after the date of enactment of this Act, the National Bureau of Standards shall develop test procedures for the determination of substantial equivalency of re-refined or otherwise processed used oil or blend of oil, consisting of such re-refined or otherwise processed used oil and new oil or additives, with new oil for a particular end use.
Page 90 - Studies or reports which are complete in themselves but restrictive in their treatment of a subject. Analogous to monographs but not so comprehensive in scope or definitive in treatment of the subject area. Often serve as a vehicle for final reports of work performed at NBS under the sponsorship of other government agencies.
Page 239 - ... these efforts; builds and maintains competence in the necessary disciplines required to carry out this research and technical service; develops engineering data and measurement capabilities; provides engineering measurement traceability services; develops test methods and proposes engineering standards and code changes; develops and proposes new engineering practices; and develops and improves mechanisms to transfer results of its research to the utlimate user. The Laboratory consists of the...
Page 304 - 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 cesium- 133 atom (13th CGPM, 1967).