National Bureau of Standards Circular, Τεύχη 569-5751956 |
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Σελίδα 2
... precision measuring instruments that this review is chiefly con- cerned . Individual fibers , with or without metal- lic coatings , have been used as suspensions , as sensing elements and as unit assemblies in many precision instruments ...
... precision measuring instruments that this review is chiefly con- cerned . Individual fibers , with or without metal- lic coatings , have been used as suspensions , as sensing elements and as unit assemblies in many precision instruments ...
Σελίδα 19
... Precision multiple sorption - desorption apparatus , Anal . Chem . 23 , 739 ( 1951 ) . f . Miscellaneous Applications [ 64 ] H. Gaudin , Sur les proprietes du cristal de roche fondu , Compt . rend . 8 , 678 ( 1839 ) , from Shenstone ...
... Precision multiple sorption - desorption apparatus , Anal . Chem . 23 , 739 ( 1951 ) . f . Miscellaneous Applications [ 64 ] H. Gaudin , Sur les proprietes du cristal de roche fondu , Compt . rend . 8 , 678 ( 1839 ) , from Shenstone ...
Σελίδα 1
... precision measurements are made ; State weights and measures officials are interested in laws and regulations on the subject and in methods of verifying commercial weighing and measuring devices . But a vastly larger group of people are ...
... precision measurements are made ; State weights and measures officials are interested in laws and regulations on the subject and in methods of verifying commercial weighing and measuring devices . But a vastly larger group of people are ...
Σελίδα 4
... precision , this difference is so small as to be of no consequence . The metric system , by itself , is not a complete system covering all physical measurements . A complete system requires certain additional units such , for example ...
... precision , this difference is so small as to be of no consequence . The metric system , by itself , is not a complete system covering all physical measurements . A complete system requires certain additional units such , for example ...
Σελίδα 5
... precision measurements . The Bureau , maintained by assessed contri- butions of the signatory governments , is truly international . In recent years the scope of the work at the International Bureau has been considerably broadened . It ...
... precision measurements . The Bureau , maintained by assessed contri- butions of the signatory governments , is truly international . In recent years the scope of the work at the International Bureau has been considerably broadened . It ...
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.