Journal of Research of the National Bureau of Standards: Engineering and instrumentation. C, Volumes 72-75U.S. Government Printing Office, 1968 |
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Page 17
... stand- ard in a measurement requiring the greatest possible accuracy . 7.10 . Uncertainty in the Length Measurements As previously indicated in Section 4.1 , a determina- tion of the two lengths , L , and L2 , of a silica tube con ...
... stand- ard in a measurement requiring the greatest possible accuracy . 7.10 . Uncertainty in the Length Measurements As previously indicated in Section 4.1 , a determina- tion of the two lengths , L , and L2 , of a silica tube con ...
Page 71
... Standing Waves on Voltage Measurement Assuming uniform diameters of the coaxial system , the error introduced in the ... Standing Waves on Current Measurements Standing waves are at present a more critical source of error in current than ...
... Standing Waves on Voltage Measurement Assuming uniform diameters of the coaxial system , the error introduced in the ... Standing Waves on Current Measurements Standing waves are at present a more critical source of error in current than ...
Page 73
... standing waves are entirely avoidable when Rm is made equal to the load impedance of the cur- rent sensor ( in its enclosure ) at its final application . This is so because the current entering the load will be calibrated for a given ...
... standing waves are entirely avoidable when Rm is made equal to the load impedance of the cur- rent sensor ( in its enclosure ) at its final application . This is so because the current entering the load will be calibrated for a given ...
Page 78
... stand- ardizing radio - frequency voltmeter , J. Res . NBS 44 , 15-30 ( Jan. 1950 ) RP2055 . [ 2 ] Electrodynamic ammeter for very high frequencies , NBS Tech . News Bull . 34 , No. 7 , 103-104 ( July 1950. ) [ 3 ] N. V. Frederick , An ...
... stand- ardizing radio - frequency voltmeter , J. Res . NBS 44 , 15-30 ( Jan. 1950 ) RP2055 . [ 2 ] Electrodynamic ammeter for very high frequencies , NBS Tech . News Bull . 34 , No. 7 , 103-104 ( July 1950. ) [ 3 ] N. V. Frederick , An ...
Page 226
... stand- ards were prepared at different concentrations in each system . The analytical results for all compositions in Al - Mg are presented and discussed . Key Words : Al - Mg : Au - Si ; electron probe standards ; quantitative ...
... stand- ards were prepared at different concentrations in each system . The analytical results for all compositions in Al - Mg are presented and discussed . Key Words : Al - Mg : Au - Si ; electron probe standards ; quantitative ...
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accuracy admittance alloys analysis application approximately atomic attenuation bolometer Bolovac bridge Bureau of Standards calculated calibration calorimeter capacitance capacitor Chem circuit coaxial coefficient connectors constant creep Cryogenic crystal curves density described detector determined dew point disk effect electrical electron electron probe microanalysis energy equation error evaluation experimental field film flow frequency function heat hydrometer IEEE impedance input Instr Instrumentation Vol Key words laser linear liquid load magnetic materials measurements ment meter method microwave Mössbauer effect Mössbauer spectroscopy National Bureau obtained optical oscilloscope output paper parameters percent Phys precision pressure Proc properties pulse radiation range ratio reference resistance resistors resonance sample shown in figure solution specimen spectra stress surface Tech techniques temperature thermal thermal conductivity thermocouple thermodynamic thiosulfate tion Trans tube tungsten uncertainty values vapor voltage waveguide wet-bulb wet-bulb temperature wire x-ray
Popular passages
Page 28 - In no case does such identification imply recommendation or endorsement by the National Bureau of Standards, nor does it imply that the material or equipment identified is necessarily the best available for the purpose.
Page 46 - THE INSTITUTE FOR BASIC STANDARDS provides the central basis within the United States of a complete and consistent system of physical measurement; coordinates...
Page 25 - Passenger comfort is one of the most important factors to be considered in the design of these facilities and this also applies to the waiting rooms, rest rooms, lunch and dining rooms.
Page 21 - ... (1) nuclear data, (2) atomic and molecular data, (3) solid state data, (4) thermodynamic and transport data, (5) chemical kinetics, (6) colloid and surface properties, and (7) mechanical properties.
Page 82 - 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...
Page 23 - The procedure uses the x and y coordinates and the individual directions of the minutiae ( ridge endings and bifurcations). The identity of the...
Page 22 - This publication contains a descriptive listing, item by item, of most of the test and calibration work done at the National Bureau of Standards with the respective fees.
Page 16 - Maryland, and by the Division of Biology and Medicine of the United States Atomic...