National Bureau of Standards Circular, Τεύχη 569-5751956 |
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Σελίδα
... U. S. Government Printing Office , Washington 25 , D. C. UNITED STATES DEPARTMENT OF COMMERCE NATIONAL BUREAU OF STANDARDS • PERIODICALS OF THE NATIONAL BUREAU OF STANDARDS.
... U. S. Government Printing Office , Washington 25 , D. C. UNITED STATES DEPARTMENT OF COMMERCE NATIONAL BUREAU OF STANDARDS • PERIODICALS OF THE NATIONAL BUREAU OF STANDARDS.
Σελίδα
... AMERICA U.S. National Bureau of Standards Circular 569 Issued January 25 , 1956 For sale by the Superintendent of Documents , U. S. Government Printing Office , Washington 25 , D. C. Price 25 cents Page 1 Pag 2 4 4 1 4 1 6.
... AMERICA U.S. National Bureau of Standards Circular 569 Issued January 25 , 1956 For sale by the Superintendent of Documents , U. S. Government Printing Office , Washington 25 , D. C. Price 25 cents Page 1 Pag 2 4 4 1 4 1 6.
Σελίδα 26
... U. S. GOVERNMENT PRINTING OFFICE : 1956 O - 368021 * UNITED STATES * AMERICA 26 7. ADDENDUM.
... U. S. GOVERNMENT PRINTING OFFICE : 1956 O - 368021 * UNITED STATES * AMERICA 26 7. ADDENDUM.
Σελίδα
... U. S. Government Printing Office , Washington 25 , D. C. UNITED STATES DEPARTMENT OF COMMERCE NATIONAL BUREAU OF STANDARDS • PERIODICALS OF THE NATIONAL BUREAU OF STANDARDS.
... U. S. Government Printing Office , Washington 25 , D. C. UNITED STATES DEPARTMENT OF COMMERCE NATIONAL BUREAU OF STANDARDS • PERIODICALS OF THE NATIONAL BUREAU OF STANDARDS.
Σελίδα
... AME National Bureau of Standards Circular 570 Issued May 21 , 1956 For sale by the Superintendent of Documents , U. S. Government Printing Office , Washington 25 , D. C. The National Standards of Length and Mass , U. S. Price 25 cents.
... AME National Bureau of Standards Circular 570 Issued May 21 , 1956 For sale by the Superintendent of Documents , U. S. Government Printing Office , Washington 25 , D. C. The National Standards of Length and Mass , U. S. Price 25 cents.
Συχνά εμφανιζόμενοι όροι και φράσεις
100 kc d(miles apothecaries apparatus atmosphere avoirdupois pound Berkeley Biol Bremmer British Bureau of Standards bushel CALIFORNIA LIBRARY Chem computed conductivity cubic inches decibels Distance From Source electron feet field intensity FIGURE fluid drams fluid ounces fluid scruple free space frequencies fused silica gallon Glass Technol grains ground wave h₂ Inst International invar isotopes kc f kilogram laboratory Line Standards mathematics methods metric system Mhos per Meter millimeters MISCELLANEOUS PUBLICATION National Bureau NBS CIRCULAR permittivity phase velocity Phys physical Plane Earth Theory Proc propagation Prototype Meter quartz radians radio radio propagation Research secondary factor silica fibers Spherical Earth Theory spherical-earth theory standards of length Statute Miles steel tapes strength surface system of weights t(microseconds TABLE temperature tension thermal tion tonnage troy pound U. S. Government Printing units UNIVERSITY OF CALIFORNIA Variation volts per meter wavelength weights and measures yard Ηρ λ
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.
Σελίδα 22 - Projects are conducted in fifteen fields : electricity and electronics, optics and metrology, heat and power, atomic and radiation physics, chemistry, mechanics, organic and fibrous materials, metallurgy, mineral products, building technology, applied mathematics, data processing systems, cryogenic engineering, radio propagation, and radio standards.