National Bureau of Standards Circular, Τεύχη 569-5751956 |
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Σελίδα 5
... feet from the flame . These fibers are deposited in a angled mass and must be eased apart . They re fairly short and may be damaged by super- icial scratches from the contacts . Fibers can also be drawn by a hand method [ 1 , 5 , 9 ] in ...
... feet from the flame . These fibers are deposited in a angled mass and must be eased apart . They re fairly short and may be damaged by super- icial scratches from the contacts . Fibers can also be drawn by a hand method [ 1 , 5 , 9 ] in ...
Σελίδα 3
... feet . This Roman mile of 5 000 Roman feet was introduced into Britain , became 5 000 English feet , and in Tudor times ( probably in the reign of Henry VII , 1485 to 1509 , but definitely by a statute of Queen Elizabeth , who reigned ...
... feet . This Roman mile of 5 000 Roman feet was introduced into Britain , became 5 000 English feet , and in Tudor times ( probably in the reign of Henry VII , 1485 to 1509 , but definitely by a statute of Queen Elizabeth , who reigned ...
Σελίδα 6
... feet = 1 yard , and 1 760 yards = 1 mile are the same in both countries ; but there are some very important differences . In the first place , the U. S. bushel and the U. S. gallon , and their subdivisions differ from the corresponding ...
... feet = 1 yard , and 1 760 yards = 1 mile are the same in both countries ; but there are some very important differences . In the first place , the U. S. bushel and the U. S. gallon , and their subdivisions differ from the corresponding ...
Σελίδα 7
... feet , inches , and binary fractions of an inch , thus 9 feet 4 % inches . If , however , these measured lengths are to be subsequently used in calculations of area or volume , that method of subdivision at once becomes extremely ...
... feet , inches , and binary fractions of an inch , thus 9 feet 4 % inches . If , however , these measured lengths are to be subsequently used in calculations of area or volume , that method of subdivision at once becomes extremely ...
Σελίδα 8
of a unit . Elevations of land above sea level are given in feet even though the height may be several miles ; the height of aircraft above sea level as given by an altimeter is likewise given in feet , no matter how high it may be . On ...
of a unit . Elevations of land above sea level are given in feet even though the height may be several miles ; the height of aircraft above sea level as given by an altimeter is likewise given in feet , no matter how high it may be . On ...
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.