The Institute of Physics ( IOP ) по журналам "Metrologia"
Отображаемые элементы 1-20 из 1745
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(1996-08-01)A newly developed Au/Pd thermocouple has shown very high reproducibility and good immersion characteristics. A stability test of the Au/Pd thermocouple has been conducted for 1000 h at 1000 C in air to assess its suitability ...
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(1972-07-01)A hot cathode 114Cd, as well as a watercooled hot cathode 198Hg lamp were recently designed. The line profiles of the visible radiations produced by use of these were investigated and the wavelengths measured. The result ...
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(1973-04-01)
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(1973-01-01)Molecular absorption lines are used for the stabilization of laser wavelengths. Because of the strong absorption at 568.2 nm 127I2-absorption was studied with a krypton ion laser. Two new absorptions were found at 530.9 ...
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(1995-12-01)
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(1986-01-01)This paper describes the design and construction of a novel form of equal-arm balance. The balance has been designed to study the performance of flexure strips for use as pivots in a 1 kg mass comparator working at the ...
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(1998-08-01)An integrating-sphere source developed by MTL Systems, Inc. was calibrated for them by a commercial standards laboratory traceable to the National Institute of Standards and Technology (NIST), resulting in values of spectral ...
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(1999-02-01)An extended-cavity diode laser has been stabilized to hyperfine components of the 6-3, P(33) transition of the B-X system of 127I2 at 633 nm, and its performance evaluated by comparison with an iodine-stabilized He-Ne ...
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(1999-10-01)In industrial practice, the decision to accept or reject an inspected item is usually made on the basis of measurement information. Since this information is rarely complete, it is not possible in general to be absolutely ...
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(1986-01-01)
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(1990-01-01)``Melting'' and ``freezing'' behaviour of Ga-In eutectic has been studied in order to find the reason for the observed irreproducibility of the ``melting'' and ``freezing'' points of binary eutectics. It is shown that ...
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(1995-01-01)This paper charts the history of the electrical units up to 1964: from conception through the CGS to the SI via the MKSA system. It incorporates a shortened version of IEC Publication 164 which was published in 1964.
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(1969-10-01)An extensive program of neutron source calibrations using an improved manganese bath technique has been completed. Sources generating four neutron spectra were compared at different concentrations of manganese. The results ...
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(2000-10-01)The results are presented of absolute spectral responsivity measurements for SPPD11 and SPPD11-04 pulse-type silicon semiconductor detectors (developed by the Research Institute of Pulse Technique, Moscow), carried out ...
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(1995-12-01)An experimental system using correlated photons for radiometric purposes has been set up at the National Institute of Standards and Technology (NIST). We use pairs of correlated photons to produce spatial maps of the ...
Отображаемые элементы 1-20 из 1745