Circular of the Bureau of Standards, Masalah 24U.S. Government Printing Office, 1925 |
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Halaman 57
... requirements and the uniformity of commercial materials . ( Aug. 27 , 1917. ) 34 Pp . Price , 10 cents . $ 307 . Note on Electrical Conduction in Metals at Low Tem- peratures . .. Francis B. Silsbee Measurements at the University of Lei ...
... requirements and the uniformity of commercial materials . ( Aug. 27 , 1917. ) 34 Pp . Price , 10 cents . $ 307 . Note on Electrical Conduction in Metals at Low Tem- peratures . .. Francis B. Silsbee Measurements at the University of Lei ...
Halaman 59
... requirements of a quantitative radiometer and may be used for measur- ing ratios of intensities extending from the blue throughout the ultra - violet part of the spectrum . ( June 17 , 1918. ) 30 pp . Price , 10 cents . S320 . Additions ...
... requirements of a quantitative radiometer and may be used for measur- ing ratios of intensities extending from the blue throughout the ultra - violet part of the spectrum . ( June 17 , 1918. ) 30 pp . Price , 10 cents . S320 . Additions ...
Halaman 111
... requirements of this test . The results of the investigation show that a high - pressure steam test should be used where cement or cement products are to be treated or " cured " in steam under pressure , and is of value in indicating ...
... requirements of this test . The results of the investigation show that a high - pressure steam test should be used where cement or cement products are to be treated or " cured " in steam under pressure , and is of value in indicating ...
Halaman 125
... requirements . The new table lies between the Holland and Gerlach scales and has three important advantages which should commend it for general use . They are : ( 1 ) It is based upon the specific gravity values of Plato , which are ...
... requirements . The new table lies between the Holland and Gerlach scales and has three important advantages which should commend it for general use . They are : ( 1 ) It is based upon the specific gravity values of Plato , which are ...
Halaman 136
... requirements for mechanical tests , and a specification is proposed with revisions in accordance with the results of these tests . ( Sept. 11 , 1920. ) 25 pp . Price , 10 cents . T173 . Tests of Bond Resistance between Concrete and ...
... requirements for mechanical tests , and a specification is proposed with revisions in accordance with the results of these tests . ( Sept. 11 , 1920. ) 25 pp . Price , 10 cents . T173 . Tests of Bond Resistance between Concrete and ...
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15 cents absorption acid alloys alternating current ammonia annual antenna apparatus brick Bureau of Standards calorimeter carbon cells cement CHIG circuit circular clays coils color commercial committee concrete condensers conference construction contains copper curves described determined discussed effect electrical electrical insulating electrolytic electromotive force Elimination of Waste-Simplified experimental Federal Specifications Board formulas frequency galvanometer given Government Master Specification inductance coils instruments insulating investigation iron laboratory lamps lime magnetic manufacturers materials metal method molybdenite mutual inductance obtained oxide paint plates platinum Portland cement potentiometer Practice Recommendation Price properties pyrometer quicklime radiation radio resistance samples scale Screw Thread self-inductance shown simplified practice specification was officially specification was prepared spectral spectrum steel tables temperature tests thermal expansion thermometers tion tube tungsten United States Government UNIV vapor various voltage W. W. Coblentz Waste-Simplified Practice wave lengths weights and measures wire
Bagian yang populer
Halaman 127 - AA Klein) Constitution and microstructure of silica brick and changes involved through repeated burnings at high temperatures, US Bur.
Halaman 209 - Accordingly, a general conference was held under the auspices of the Division of Simplified Practice, National Bureau of Standards...
Halaman 204 - Spinners have appointed a joint committee ; the National Association of Cotton Manufacturers and the American Cotton Manufacturers...
Halaman 113 - Special Studies in Electrolysis Mitigation. IV. A Preliminary Report on Electrolysis Mitigation in Elyria, Ohio, with Recommendations for Mitigation Burton McCollum and KH Logan From data furnished by the city and the Cleveland Southwestern & Columbus Railway Co.
Halaman 42 - 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 174 - Prosecutions for offenses under this Act may be begun upon complaint of local sealers of weights and measures, or other officers of the several States and Territories appointed to enforce the laws of the said States...
Halaman 195 - March 31, 1931, for the use of the departments and independent establishments of the Government in the purchase of this...
Halaman 173 - 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 20 - 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 22 - Ives 126. Coupled Currents in which the Secondary has Distributed Inductance and Capacity Louis Cohen 127. Effect of Phase of Harmonics upon Acoustic Quality .... MG Lloyd and PG Agnew 128.