A laboratory course in experimental physics (1896)
Loudon, W. J. (William James), McLennan, John Cunningham, joint author · New York and London, Macmillan and Co. · leaf 22
eter screw untilthe instrument rests equally onthe four supports. Note thereading, and then place thespherometer on a plane surface,and again establish contact atfour points, and note the read-ing. The difference betweenthese two will give the height hof the spherical segment whichhas for its base… … Fig. 9. r* = h(2a-h), 1* , h a = —- H— 2/1 2 To find r, place the instrument on a sheet of cardboard rest-ing on the three supports, and the screw, and press it lightlydown so as to make small indentations. Since the three pointsA, B, and C form an equilateral triangle, r may be determined 12…
Physics
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