National Bureau of Standards Circular, Τεύχη 569-5751956 |
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Σελίδα 10
... distances gives glasses and espe- cially fused silica an initially high value for strength . However , the theoretical strength is somewhat modified by certain dis- continuities in the structure and by the ef- fects of various external ...
... distances gives glasses and espe- cially fused silica an initially high value for strength . However , the theoretical strength is somewhat modified by certain dis- continuities in the structure and by the ef- fects of various external ...
Σελίδα 14
... distances and the mean bond an- gles . They also showed that any particles in fused silica showing similarity to crystals are too small to be described as crystalline matter . The structural arrangement of fused sil- ica as confirmed by ...
... distances and the mean bond an- gles . They also showed that any particles in fused silica showing similarity to crystals are too small to be described as crystalline matter . The structural arrangement of fused sil- ica as confirmed by ...
Σελίδα 17
... distance or by a configuration change such as a change in bond angles , an increase of disorder or an increase in structural binding would decrease the expansion coef- ficient [ 289 ] , where bond angle changes in the random structure ...
... distance or by a configuration change such as a change in bond angles , an increase of disorder or an increase in structural binding would decrease the expansion coef- ficient [ 289 ] , where bond angle changes in the random structure ...
Σελίδα 3
... distance from the point of the elbow to the end of the middle finger . This unit was about 18 inches long , but there were important variations in the length of a cubit . The inch was originally a thumb's breadth . In the Roman ...
... distance from the point of the elbow to the end of the middle finger . This unit was about 18 inches long , but there were important variations in the length of a cubit . The inch was originally a thumb's breadth . In the Roman ...
Σελίδα 4
... distance under specified conditions between the lines on the International Prototype Meter without reference to any measurements of the earth or to the Meter of the Archives , which it superseded . The kilogram was originally intended ...
... distance under specified conditions between the lines on the International Prototype Meter without reference to any measurements of the earth or to the Meter of the Archives , which it superseded . The kilogram was originally intended ...
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.