National Bureau of Standards Circular, Τεύχη 569-5751956 |
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Σελίδα 4
... effects of the reducing tendencies of carbon . There is no tendency for quartz or fused silica to adhere to the carbon if both are pure , for the ox- ides of carbon prevent close contact between the molten silica and the carbon ...
... effects of the reducing tendencies of carbon . There is no tendency for quartz or fused silica to adhere to the carbon if both are pure , for the ox- ides of carbon prevent close contact between the molten silica and the carbon ...
Σελίδα 6
... effect of gravity on larger fibers has been noticed when they are drawn horizontally ; however , the small fibers can be drawn either horizontally or vertically with no noticable . effects [ 316 ] . With flame - blown silica fibers ...
... effect of gravity on larger fibers has been noticed when they are drawn horizontally ; however , the small fibers can be drawn either horizontally or vertically with no noticable . effects [ 316 ] . With flame - blown silica fibers ...
Σελίδα 8
... effects when workin with silica fibers . This could be because c the smaller masses involved and the consequer : smaller amounts of heat and fumes . It is well to note , however , that there are some precautions to be taken in quartz ...
... effects when workin with silica fibers . This could be because c the smaller masses involved and the consequer : smaller amounts of heat and fumes . It is well to note , however , that there are some precautions to be taken in quartz ...
Σελίδα 10
... effect of flaws or discontinui- ties is to produce local stresses which ex- ceed the average stress and as a result lead to failure . Calculations of the effects show that they could conceivably account for the differences between ...
... effect of flaws or discontinui- ties is to produce local stresses which ex- ceed the average stress and as a result lead to failure . Calculations of the effects show that they could conceivably account for the differences between ...
Σελίδα 11
... effects of surrounding conditions on them , may cause fracture before the theoretical elastic limit is reached . Because of the effects on strength of these conditions it is difficult to bring values of ... effect of the surface and its.
... effects of surrounding conditions on them , may cause fracture before the theoretical elastic limit is reached . Because of the effects on strength of these conditions it is difficult to bring values of ... effect of the surface and its.
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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.