Circular of the Bureau of Standards, Masalah 24U.S. Government Printing Office, 1922 |
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Halaman 16
... steel , carbon - steel , and tellurium - aluminum ) for small currents . The percentage of rectification is independent of the frequency and the rectified current is roughly proportional to the square of the alternating current . ( Apr ...
... steel , carbon - steel , and tellurium - aluminum ) for small currents . The percentage of rectification is independent of the frequency and the rectified current is roughly proportional to the square of the alternating current . ( Apr ...
Halaman 18
... steel subjected to alternating magnetization , and description of an apparatus giving 1 per cent accuracy with less than 2 kg . of material . Results are given for domestic and foreign steels , showing a wide range of quality ...
... steel subjected to alternating magnetization , and description of an apparatus giving 1 per cent accuracy with less than 2 kg . of material . Results are given for domestic and foreign steels , showing a wide range of quality ...
Halaman 27
... Steels .. .J . R. Cain Errors in the usual methods for determining vanadium in steels are considered and methods of eliminating or correcting for some of these are discussed . A new method , based on precipitation of the vanadium by ...
... Steels .. .J . R. Cain Errors in the usual methods for determining vanadium in steels are considered and methods of eliminating or correcting for some of these are discussed . A new method , based on precipitation of the vanadium by ...
Halaman 41
... steels show values of the residual induction that are too sinall and of the coercive force that are too large by errors of 10 per cent and 40 per cent , respectively . The chief value of such an instrument is for comparative work in ...
... steels show values of the residual induction that are too sinall and of the coercive force that are too large by errors of 10 per cent and 40 per cent , respectively . The chief value of such an instrument is for comparative work in ...
Halaman 50
... steel with special reference to the commercial application of the magnetic data as criteria of the mechanical fitness of a given steel and of magnetic changes of steel under stress as indications of the state of strain . The evidence ...
... steel with special reference to the commercial application of the magnetic data as criteria of the mechanical fitness of a given steel and of magnetic changes of steel under stress as indications of the state of strain . The evidence ...
Edisi yang lain - Lihat semua
Istilah dan frasa umum
15 cents absorption acid alloys alternating current ammonia analysis Annual reports antenna apparatus Baumé scale Bureau of Standards cadmium calorimeter carbon cell chemical circuits circular clays coaxial coils color commercial concrete condensers constant contains copper curves density described determined Director discussed E. B. Rosa effect electrical electrode electrolysis electromotive force emissivity error experimental formula frequency galvanometer given glass heat hysteresis instrument investigation iron June laboratory lamps linseed oil Louis Cohen magnetic materials mercury metal meters method molybdenite mutual inductance obtained oxide Paint paper gives photometric platinum Portland cement potentiometer Price properties pyrometer radiation reflection resistance resistance thermometer rubber samples scale self-inductance Sept shown silver sodium oxalate solutions specifications spectral spectrum steel tables temperature tests thermometers tion transmission tube tungsten units vanadium vapor various voltage voltameter W. W. Coblentz wave lengths weights and measures wire
Bagian yang populer
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Halaman 84 - Special Studies in Electrolysis Mitigation. IV. A Preliminary Report on Electrolysis Mitigation in Elyria, Ohio, with Recommendations for Mitigation...
Halaman 139 - Specifications and tolerances for weights and measures,, and weighing and measuring devices, adopted by the eleventh annual conference on the weights and measures of the United States, held at the Bureau of Standards, Washington, DC, May 23-26, 1916, and recommended by the Bureau of Standards for adoption by the several States.
Halaman 31 - At all stations the logarithmic decrement per complete oscillation in the wave trains emitted by the transmitter shall not exceed two-tenths, except when sending distress signals or signals and messages relating thereto. USE OF STANDARD DISTRESS WAVE Fifth.
Halaman 18 - ... Concentration Cells Henry S. Carhart 166. The Capacity and Phase Difference of Paraffined Paper Condensers as Functions of Temperature and Frequency Frederick W.
Halaman 14 - The 20° C temperature coefficient of a sample of copper is given by multiplying the number expressing the per cent conductivity by 0.00394.
Halaman 124 - That reasonable variations shall be permitted and tolerance shall be established by rules and regulations made by the Director of the Bureau of Standards and approved by the Secretary of Commerce.
Halaman 9 - Burrows 1 1 8. A Method for Constructing the Natural Scale of Pure Color . . PG Nutting 119. An Approximate Method for the Analysis of EMF. Waves . . PG Agnew 1 20. The Thermoelectric Properties of Tantalum and Tungsten . W . W . Coblentz 121.
Halaman 64 - Relation of the High-Temperature Treatment of High-Speed Steel to Secondary Hardening and Red Hardness...