CONSTANTS. 



CONSTANTS, 



i lit. <>f v. 



./, = J &9 [i - o.ooo 3 o( - 59)] i-e 56 - 68]. 



, are given on pages ; further discussion of this 



subject consult (iciri n H-. 1'liil. Mas:, xi. 431 (1895). 



scale of temierature in which th. ta the hydrogen scale 



national Bureau of Wrights ai. >. whi.-h represents, as nearly as it is 



known, th. absolute s 



VALUE OF g AT DIFFERENT LATITUDES AND ELEVATIONS. 



g = #45 ( i o.oo 259 cos 2 X o.oo ooo 020 // 

 , = 980.6 -^- approx. This i> the approximate average value of </ at latinm 



sea-level. Thr experimental values vary widely in the next place of figures. 

 X = latitude of place. 

 // - altitude of place above sea-level in metres. 



M- n-ndi-r it probable that near the earth's Mirfooe the coetti 

 more nearly o.oo ooo 030. 



BROWN AND SHARPE WIRE GAUGE. 



The diameter corresponding to any -runi:"' nuiiil.er al>ove zero . -e less 



than that of a No. o \\ire> may be found t<> within one liundivd-th.>u>andth of an inch 

 nal places) by the expression 



Diam. in inch. -s of 1 



v = 0.32 486 x 0.89 052 5", 

 gaup- number n J 



f diain. in in. -lies ~ 1.51 170 + 7.94964 - 



= 9.51 170- 10. + (9.94 964 5 - io.);. 



The diai. dim: to any gauge numbers 0,00,000, and - 



I by th.- follouim: expressions in which .V is the n . /cros. 



i. in inches =0.28 930 x i 

 Log of diam. in inches a ~i..\<> 1348 -f O.o; 



n whi< h the gauge is based are No. ooo 



...005 inch exactly. 



PHYSICAL AND CHEMICAL CONSTANTS. 



tended tables consult LAKDOLY Wftd BOftwnu isch 



CONSTANTS, 



