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 1
... length measurements. 1. Introduction 1.1 . Absolute Gravity as the Standard of Force Determinations of the acceleration due to the grav- itational attraction of the earth have been made many times since the early observations of Galileo ...
... length measurements. 1. Introduction 1.1 . Absolute Gravity as the Standard of Force Determinations of the acceleration due to the grav- itational attraction of the earth have been made many times since the early observations of Galileo ...
Page 2
... lengths of ti volved . Virtually all gravity measurements were with some form of pendulum . Basically the pendulum method substitutes a with a ... length of the time interval increased to the point where timing errors become negligible . 2.
... lengths of ti volved . Virtually all gravity measurements were with some form of pendulum . Basically the pendulum method substitutes a with a ... length of the time interval increased to the point where timing errors become negligible . 2.
Page 3
... length and in the release of the object are so formidable that no investigator up to the present has undertaken such an experiment . The restrictions of the elementary free - motion ex- periment can be eliminated by releasing the object ...
... length and in the release of the object are so formidable that no investigator up to the present has undertaken such an experiment . The restrictions of the elementary free - motion ex- periment can be eliminated by releasing the object ...
Page 4
... length Long length Magnitudes of measured parameters Time for short length Time for long length Length Time Temperature 30 centimeters 100 centimeters 156 milliseconds 348 milliseconds Least count in measuring instruments 0.1 micrometer ...
... length Long length Magnitudes of measured parameters Time for short length Time for long length Length Time Temperature 30 centimeters 100 centimeters 156 milliseconds 348 milliseconds Least count in measuring instruments 0.1 micrometer ...
Page 5
... length of 107 cm . A metal sleeve with an outside diameter of 19 mm fitted over one end of each tube and was cemented in place with epoxy cement . The external end of the sleeve was machined to a spherical radius of 12 mm . The sleeve ...
... length of 107 cm . A metal sleeve with an outside diameter of 19 mm fitted over one end of each tube and was cemented in place with epoxy cement . The external end of the sleeve was machined to a spherical radius of 12 mm . The sleeve ...
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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...