National Bureau of Standards Circular, Τεύχη 569-5751956 |
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Σελίδα
... heat and power , atomic and radiation physics , chemistry , mechanics , organic and fibrous materials , metallurgy , mineral products , building technology , applied mathematics , data processing sys tems , cryogenic engineering , radio ...
... heat and power , atomic and radiation physics , chemistry , mechanics , organic and fibrous materials , metallurgy , mineral products , building technology , applied mathematics , data processing sys tems , cryogenic engineering , radio ...
Σελίδα 2
... heating and insulating devices [ 77 , 80 , 313 ] . These devices are well suited for high temperature work because of the high- softening range , low - heat conductivity , and resistance to thermal shock exhibited by the fibers ...
... heating and insulating devices [ 77 , 80 , 313 ] . These devices are well suited for high temperature work because of the high- softening range , low - heat conductivity , and resistance to thermal shock exhibited by the fibers ...
Σελίδα 3
... heat loss and evaporation . Discussions of design characteristics [ 107 ] and application to par- ticular measurements can be found in the ref- erences cited . The springs resist corrosion and can be easily cleaned but have very little ...
... heat loss and evaporation . Discussions of design characteristics [ 107 ] and application to par- ticular measurements can be found in the ref- erences cited . The springs resist corrosion and can be easily cleaned but have very little ...
Σελίδα 5
... heat of the flame must be regulated so that it is neither high enough to volatilize an excessive amount of the fused silica nor low enough to prevent curly fibers result from uneven heating [ 1 , 2 5 .ca fibers [ 1 to 3 , 92 ] were ...
... heat of the flame must be regulated so that it is neither high enough to volatilize an excessive amount of the fused silica nor low enough to prevent curly fibers result from uneven heating [ 1 , 2 5 .ca fibers [ 1 to 3 , 92 ] were ...
Σελίδα 6
curly fibers result from uneven heating [ 1 , 2 , 94 , 195 ] , so curly in some cases as to resem- ble watch springs [ 2 ] . These fibers can be straightened by " soft flaming " but are weak- ened as a result [ 195 ] . A slight bowing ...
curly fibers result from uneven heating [ 1 , 2 , 94 , 195 ] , so curly in some cases as to resem- ble watch springs [ 2 ] . These fibers can be straightened by " soft flaming " but are weak- ened as a result [ 195 ] . A slight bowing ...
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.