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 2
... estimate of the magnitude of a presumed constant quantity , the true value of which is unknown , cannot realistically be assigned a level of accuracy . One can and does derive an index , such as the standard deviation , of the precision ...
... estimate of the magnitude of a presumed constant quantity , the true value of which is unknown , cannot realistically be assigned a level of accuracy . One can and does derive an index , such as the standard deviation , of the precision ...
Page 10
... Estimated limits of error interval m × 10 6 m × 10 6 m x 10 -0.37 +1.16 ( a ) +1.10 -.22 +1.55 +.03 +1.55 -.20 + 1.29 -0.19 .17 " No determination made of 0 to 300 - mm interval . +1.33 .21 11+ pared on a daily basis to the WWV ...
... Estimated limits of error interval m × 10 6 m × 10 6 m x 10 -0.37 +1.16 ( a ) +1.10 -.22 +1.55 +.03 +1.55 -.20 + 1.29 -0.19 .17 " No determination made of 0 to 300 - mm interval . +1.33 .21 11+ pared on a daily basis to the WWV ...
Page 17
... estimated limits of error for the individual deter- minations . Since the scale was in active use over the greater ... estimate of the effect of the different length determinations obtained for the invar scale can be made by computing a ...
... estimated limits of error for the individual deter- minations . Since the scale was in active use over the greater ... estimate of the effect of the different length determinations obtained for the invar scale can be made by computing a ...
Page 18
... estimated that the uncer tainly in the final result is represented by a standard deviation of 0.00045 cm / s2 . 8. Comparison with Other Gravity Values The mean value of 980.1011 cm / s2 given in table 4 is that determined directly from ...
... estimated that the uncer tainly in the final result is represented by a standard deviation of 0.00045 cm / s2 . 8. Comparison with Other Gravity Values The mean value of 980.1011 cm / s2 given in table 4 is that determined directly from ...
Page 31
... NBS sample , and that the difference between the two laboratories was less than the estimated sys- tematic errors ( 0.01 % for the NBS ) in the pressure measurements . The difficulties of realizing a temperature of 0.000 ° C 31.
... NBS sample , and that the difference between the two laboratories was less than the estimated sys- tematic errors ( 0.01 % for the NBS ) in the pressure measurements . The difficulties of realizing a temperature of 0.000 ° C 31.
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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
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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...
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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.
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