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 9
... circuit of the oscilloscope was adjusted to start the sweep circuit at some potential level of the linearly rising ( negative ) signal from the photomultiplier tube . The timers were then triggered from the sawtooth sweep circuit of. 9.
... circuit of the oscilloscope was adjusted to start the sweep circuit at some potential level of the linearly rising ( negative ) signal from the photomultiplier tube . The timers were then triggered from the sawtooth sweep circuit of. 9.
Page 10
... circuit such that an interval displayed on the indicator panel could be retained while the gates were reset for a new timing sequence . Subsequent intervals were then added to the intervals already displayed . This circuit was not ...
... circuit such that an interval displayed on the indicator panel could be retained while the gates were reset for a new timing sequence . Subsequent intervals were then added to the intervals already displayed . This circuit was not ...
Page 12
... circuits was also necessa The indication in the unit which displayed the ti interval for the 1 - m length was consistently ... circuit used the same as that used for the photomultiplier The departure from the nominal multiple of 1,000 ...
... circuits was also necessa The indication in the unit which displayed the ti interval for the 1 - m length was consistently ... circuit used the same as that used for the photomultiplier The departure from the nominal multiple of 1,000 ...
Page 15
... circuit assemblies . The end - to - end resistance of the tubes ranged from 4 to 10 . The tubes were coated on the outsides leaving uncoated only small areas in line with the slit apertures . Since it was possible to vary the separation ...
... circuit assemblies . The end - to - end resistance of the tubes ranged from 4 to 10 . The tubes were coated on the outsides leaving uncoated only small areas in line with the slit apertures . Since it was possible to vary the separation ...
Page 17
... Circuits The 10 - stage photomultiplier tube used in the measurements had a spectral sensitivity peak in the 400 to ... circuit through the coaxial cable connections to the timer panel was capable of following illumination rise times at ...
... Circuits The 10 - stage photomultiplier tube used in the measurements had a spectral sensitivity peak in the 400 to ... circuit through the coaxial cable connections to the timer panel was capable of following illumination rise times at ...
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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...