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 15
... density gradient in the air and the viscous drag resulting from relative motion of the object . The buoyant effect ... density p , the ratio of the molecular forces to the gravitational forces would be expected to be less than Fm Ca U Fu ...
... density gradient in the air and the viscous drag resulting from relative motion of the object . The buoyant effect ... density p , the ratio of the molecular forces to the gravitational forces would be expected to be less than Fm Ca U Fu ...
Page 16
... density , C is the average molecular velocity , and U is the object speed . The gas pressures present in this experiment were such that the Stokes law forces would be expected to be of the same order of magnitude or less . If a = 5 × 10 ...
... density , C is the average molecular velocity , and U is the object speed . The gas pressures present in this experiment were such that the Stokes law forces would be expected to be of the same order of magnitude or less . If a = 5 × 10 ...
Page 18
... density , and E is the modulus of elasticity . If the origin is taken as the bottom of the tube , at y = Lo the ... density of approximately 2210 kg / m3 with a modulus of 7.2 × 1010 N / m2 . Invar has a density of approximately 8000 kg ...
... density , and E is the modulus of elasticity . If the origin is taken as the bottom of the tube , at y = Lo the ... density of approximately 2210 kg / m3 with a modulus of 7.2 × 1010 N / m2 . Invar has a density of approximately 8000 kg ...
Page 29
... density of weights Piston area Elastic deformation Estimate of clearance Thermal expansion of piston Atmospheric pressure Air density Local gravity Temperature measurements - Hypsometer Thermometer self - heating Bridge balance Change ...
... density of weights Piston area Elastic deformation Estimate of clearance Thermal expansion of piston Atmospheric pressure Air density Local gravity Temperature measurements - Hypsometer Thermometer self - heating Bridge balance Change ...
Page 31
... density 13.5951 g / cm2 , under normal gravity , 9.80665 m / sec2 ) . The value , 26,132.2 reported by Roebuck and Cram was given in terms of the value 13.5955 for the density of mercury ; here it has been adjusted to the conventional ...
... density 13.5951 g / cm2 , under normal gravity , 9.80665 m / sec2 ) . The value , 26,132.2 reported by Roebuck and Cram was given in terms of the value 13.5955 for the density of mercury ; here it has been adjusted to the conventional ...
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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...
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...