Tables of physical and chemical constants and some mathematical functions / by G.W.C. Kaye and T.H. Laby.

  • Kaye, G. W. C. (George William Clarkson), 1880-1941.
Date:
1911
Catalogue details

Licence: Public Domain Mark

Credit: Tables of physical and chemical constants and some mathematical functions / by G.W.C. Kaye and T.H. Laby. Source: Wellcome Collection.

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    CONVERSION FACTORS BRITISH INTO METRIC CONVERSION FACTORS Conversion factors based on the relations given on p. 4. g is taken as 981 ~2. Reciprocals are given for converting metric into British measure. cm.-sec British. Length— 1 inch = 1 yard = 1 mile = Area— 1 sq. inch = Volume— 1 cubic inch = 1 cubic foot = 1 pint = 1 gallon = Mass— 1 grain = 1 oz. (avoir.) = 1 lb. „ 1 ton = Density— 1 lb./cub. ft. = Velocity— 1 mile/hour = Metric. 2* * * §5400 cm.# •9144 metre* 1*6093 km. 6*4516 sq cm. 16*387 c.c. 28*317 litre •5682 litre 4*5460 litre X *0648 gram 28*350 grams •4536 k. gm. 1016 k. gm (Reciprocal.) *01602 gm./cm.3 44*70 cm./sec. '3937 t 1*0936 *6214 •1550 + *0610 •03531 1*7598 *2200 X I5'432 •03527 2*2046 *039842 62-43 •02237 British. Metric. Force— 1 poundal 1 pound wgt. Pressure— 1 lb./sq. inch >) jj 1 ton/sq. inch = >3 3) Work— 1 ft.-pound Power— 1 horse-power Heat— 1 B. Th. unit \ (1 lb., i° F.)J 13,825 dynes 4*45 x io6 dynes 68,971 1*45 xio~5 dynes/cm.2 70*31 *01422 gm./cm.2 1*545 xio8 6*47x10-° dynes/cm.2 i’575 '6349 k. gm./mm.2 (Reciprocal.) 7*233 X IO~5 2*247 X IO~6 1*356 joules§ •746 k. watt. 252*00 calories 7373 1 34 •00397 MISCELLANEOUS DATA CONVENIENT APPROXIMATE RELATIONS i yard = 1 metre, less 10% 2 lbs. = 1 k. gram, „ 2 galls. = 10 litres, „ (1 tonne \ less ->°/ \(iooo k. gm.)/ ' 1 ton British. U. States. 1 yard at 59°*6F, 1 lb. 1*20 gal 1 mm. 1 micron, /*= 10 [A /X= IO = 10 3 metre 1 A.U. = io~10 1 mil = io-3 inch yy SOME BRITISH WEIGHTS AND MEASURES Useful in photography, etc. The avoirdupois, troy, and apothecaries grain are the same in weight. 1 lb. (avoir.) = 7000 grains =454 grams 1 oz. „ = 43 7\ 33 =28*3 1 oz. (troy) = ) 1 oz.(apothe- > = 480 „ =31*1 caries)] 1 fl drachm 3 = 60 minims = 3*55 c.cs. 1 fl. oz. 3 = 8 fl. drachms = 28*41 1 pint =20 fl. ozs. =568 A 10% solution is 1 grain in 10 minims of solution 1 oz. (avoir.) „ 10 fl. ozs. 2 oz. „ „ 1 pint mathematical yy yy yy Number. Log.ofNumber. 7T 3*141592654 •49715 7r2 9*869604401 •99430 I /tv •318309886 1*50285 \l 7r 1*772453851 •24857 1 radian 57°*29578 1*75812 i° •017453 radian 2*24188 e 2*718281828 •43429 loge 10 2*302585 • •36222 To convert yy yy yy Multiply by Common into hyperbolic logs, 2*3026 Hyperbolic „ common „ '4343 * Correct to 1 part in a million. f Correct to 3 parts in a million. % Owing to the definition of the gallon (see p. 4), this number is dependent on assumed buoyancy and temperature corrections. § 1 joule = 10 ergs. || 1 tonne = 1000 k. gm.