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 10
... frequency multiplier , the shaper , and a seven- place decimal counting unit . A second slave unit carried another seven - place decimal counting unit . Both counting units had a least count of one - tenth of a microsecond . The timers ...
... frequency multiplier , the shaper , and a seven- place decimal counting unit . A second slave unit carried another seven - place decimal counting unit . Both counting units had a least count of one - tenth of a microsecond . The timers ...
Page 12
... frequency of the crystal oscillator was appli although it was negligible compared to other sour of error . A correction for differential delay in open and closing of the gate circuits was also necessa The indication in the unit which ...
... frequency of the crystal oscillator was appli although it was negligible compared to other sour of error . A correction for differential delay in open and closing of the gate circuits was also necessa The indication in the unit which ...
Page 61
... frequency , 0.05 to 10 volts , and 5 microamperes to 10 amperes . The principle may be used with bolometric , ther ... frequency range of about 1 to 1000 MHz , a voltage range of about 20 mV to 1.5 V , and an approximate range of uncer ...
... frequency , 0.05 to 10 volts , and 5 microamperes to 10 amperes . The principle may be used with bolometric , ther ... frequency range of about 1 to 1000 MHz , a voltage range of about 20 mV to 1.5 V , and an approximate range of uncer ...
Page 62
... frequency range and accuracy desired . It may be a thin film deposited on a substrate or a relatively thick conducting disk supported by a sub- strate . These disks have a wider range of resistance ( fractions of an ohm to 1,000 N or ...
... frequency range and accuracy desired . It may be a thin film deposited on a substrate or a relatively thick conducting disk supported by a sub- strate . These disks have a wider range of resistance ( fractions of an ohm to 1,000 N or ...
Page 63
... frequency f , is бт = 1 σmfum Substituting ( 5 ) and ( 6 ) into ( 4 ) , 1/2 ( 6 ) This indicates that the film need not be thinner than about one - fifteenth of the skin depth of the given metal at the maximum frequency of interest for ...
... frequency f , is бт = 1 σmfum Substituting ( 5 ) and ( 6 ) into ( 4 ) , 1/2 ( 6 ) This indicates that the film need not be thinner than about one - fifteenth of the skin depth of the given metal at the maximum frequency of interest for ...
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Common terms and phrases
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...