Technical Highlights of the National Bureau of StandardsU.S. Department of Commerce, National Bureau of Standards, 1960 |
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Page iv
... frequency and time interval standards . Radio broadcast service ... High - frequency electrical standards . Microwave circuit standards .. Millimeter - wave research .. Redio and microwave materials . Electronic calibration center . 2.1 ...
... frequency and time interval standards . Radio broadcast service ... High - frequency electrical standards . Microwave circuit standards .. Millimeter - wave research .. Redio and microwave materials . Electronic calibration center . 2.1 ...
Page vi
... frequency systems ( 30-300 kc / s ) . High frequency systems ... 134 134 Very high frequency systems . 136 2. Highlights of the research program - Continued 2.3 . vi.
... frequency systems ( 30-300 kc / s ) . High frequency systems ... 134 134 Very high frequency systems . 136 2. Highlights of the research program - Continued 2.3 . vi.
Page 2
... frequency , which is now maintained by means of a natural frequency of the cesium atom , was operated on a regular basis throughout the year and was used to monitor the NBS standard fre- quency broadcasts . International comparisons ...
... frequency , which is now maintained by means of a natural frequency of the cesium atom , was operated on a regular basis throughout the year and was used to monitor the NBS standard fre- quency broadcasts . International comparisons ...
Page 28
... frequencies . A simple method was developed for measuring the relative response of a microphone by means of carrier - frequency circuits . First of all , diaphragm motion is brought about by voltage of various frequencies applied to the ...
... frequencies . A simple method was developed for measuring the relative response of a microphone by means of carrier - frequency circuits . First of all , diaphragm motion is brought about by voltage of various frequencies applied to the ...
Page 40
United States. National Bureau of Standards. at a frequency of 26.1 Mc / s at room temperature with a line width of about 50 kc / s . The temperature dependence of the frequency was measured over a temperature range from 77 to 536 ° K ...
United States. National Bureau of Standards. at a frequency of 26.1 Mc / s at room temperature with a line width of about 50 kc / s . The temperature dependence of the frequency was measured over a temperature range from 77 to 536 ° K ...
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absorption accuracy alloys analysis analyzed antenna apparatus applied atmosphere automatic basic beam Bone Char Boulder Chem chemical Chemistry compounds conducted Conf constant cross sections Cryogenic Cryogenic Engineering crystals density determined developed dielectric effects electrical electron equipment evaluation experimental frequency frequency standards gage blocks gases heat helium high temperatures holmium hydrogen industry infrared instrument International investigated ionization ionosphere ions isotope laboratories liquid low temperatures maser materials Mc/s mechanical ment metals method Metrology microwave molecular molecules neutron nuclear observed obtained operation optical oxide percent phase Phys physical plasma plasma physics polymers precision pressure problems Proc processes produced properties pyrometer radiation radio propagation radio waves range reactions refractive refractive index resonance samples scattering solution spectra spectrum structure surface technical techniques theoretical theory thermal thermocouple thermodynamic tion ultraviolet values vapor voltage waveguide wavelength Weights and Measures X-ray
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