National Bureau of Standards Circular, Τεύχη 569-5751956 |
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Σελίδα 13
... accurate values size , density , and mass [ 244 ] . Tempera- re effects must also be considered if in- vidual measurements made under different nditions are to be related or compared . elastic effects which cause the strain to ig behind ...
... accurate values size , density , and mass [ 244 ] . Tempera- re effects must also be considered if in- vidual measurements made under different nditions are to be related or compared . elastic effects which cause the strain to ig behind ...
Σελίδα 26
... accurate determination of the torsion constant of quartz fibers used in measurement of the magnetic anisotropy of crystals , Ind . J. Phys . 27 , 155 ( 1953 ) . W. A. Shenstone , The methods of glass blowing and of working silica in the ...
... accurate determination of the torsion constant of quartz fibers used in measurement of the magnetic anisotropy of crystals , Ind . J. Phys . 27 , 155 ( 1953 ) . W. A. Shenstone , The methods of glass blowing and of working silica in the ...
Σελίδα 9
... accurate length measurements . The NBS - Meggers Mercury 198 lamp is one of the light sources proposed for use in defining length by reference to a specified wavelength of light . yards a century ago or to be certain of the. 9 3 600 The ...
... accurate length measurements . The NBS - Meggers Mercury 198 lamp is one of the light sources proposed for use in defining length by reference to a specified wavelength of light . yards a century ago or to be certain of the. 9 3 600 The ...
Σελίδα 10
... accuracy and permanence sufficient to justify test by the Bureau . Tests are made in accordance with test - fee schedules , copies of which may be obtained by application to the Bureau . The Bureau does not test carpenters rules ...
... accuracy and permanence sufficient to justify test by the Bureau . Tests are made in accordance with test - fee schedules , copies of which may be obtained by application to the Bureau . The Bureau does not test carpenters rules ...
Σελίδα 11
... accurate of 370515-56-3 11 ing Tapes at the National Bureau of Standards , by Lewis V. Judson ( in press ) contains addi- Standards of length_____ a Tests and calibrations of length standards Standards of mass --- a Distinction between ...
... accurate of 370515-56-3 11 ing Tapes at the National Bureau of Standards , by Lewis V. Judson ( in press ) contains addi- Standards of length_____ a Tests and calibrations of length standards Standards of mass --- a Distinction between ...
Συχνά εμφανιζόμενοι όροι και φράσεις
accuracy amplitude apothecaries apparatus applied avoirdupois pound balance Biol Bremmer British Bureau of Standards calibration CALIFORNIA LIBRARY centimeter Ceram Chem coefficient computed constants cubic inches d(miles decibels density elastic electron feet field FIGURE fluid drams fluid ounces fluid scruple frequencies fused quartz fused silica gallon geodetic Glass Technol Government Printing Office graduated ground wave Inst intervals invar isotopes kc f kilogram laboratory line standards long ton mathematics methods metric system microbalance microseconds millimeters MISCELLANEOUS PUBLICATION mmmmm National Bureau nitrogen ooooo phase Phys physical Plane Earth Theory precision Proc Prototype Meter radians radio propagation Research secondary factor silica fibers Spherical Earth Theory square Standards Circular standards of length statute miles steel tapes surface tables temperature tion tonnage troy troy pound U. S. Government Printing units UNIVERSITY OF CALIFORNIA values velocity viscosity volts per meter Washington 25 weights and measures wwwww yard
Δημοφιλή αποσπάσματα
Σελίδα 18 - Square Measure 144 square inches (sq. in.) = 1 square foot (sq. ft.) 9 square feet = 1 square yard (sq.
Σελίδα 20 - Dry Measure. — 2 pints = 1 quart; 8 quarts = 1 peck; 4 pecks = 1 bushel.
Σελίδα 18 - CUBIC MEASURE 1728 cubic inches (cu. in.) = 1 cubic foot (cu. ft.) 27 cubic feet = 1 cubic yard (cu.
Σελίδα 21 - Measures of Weight 10 milligrams (mg) =1 centigram eg 10 centigrams =1 decigram dg 10 decigrams =1 gram g 10 grams =1 dekagram Dg 10 dekagrams =1 hektogram Hg 10 hektograms =1 kilogram Kg...
Σελίδα 29 - Used in assaying. The assay ton bears the same relation to the milligram that a ton of 2,000 pounds avoirdupois bears to the ounce troy; hence the weight in milligrams of precious metal obtained from one assay ton of ore gives directly the number of troy ounces to the net ton.
Σελίδα 12 - When an equal-arm balance is used to compare an object with standards of mass ("weights"), the effects of variations in the acceleration of gravity are self-eliminating and need not be taken into account, but the apparent mass of the object is slightly different from the true mass because of the buoyant effects of the surrounding air. Mass can then be computed from apparent mass by applying a correction for air buoyancy. When a spring balance is used, an additional correction accounting for the local...
Σελίδα 4 - The essential features of the system were embodied in a report made to the French National Assembly by the Academy of Sciences in 1791. A number of other nations were invited to cooperate with France in establishing the new system, and Holland, Denmark...
Σελίδα 18 - LIQUID MEASURE When necessary to distinguish the liquid pint or quart from the dry pint or quart, the word "liquid" or the abbreviation "liq" should be used in combination with the name or abbreviation of the liquid unit.