A course of experiments in physical measurement (1897)
Whiting, Harold, d. 1895 · Boston, D.C. Heath and Co. · leaf 386
in a block (y) which is fastened to thefloor. The rod passes through a large hole in a tableto a circular disc of wood (ec/) 20 cm. in diameter, atthe centre of which is a square hole (e), into whichthe upper end of the rod is tightly fitted. Twomarkers, b and g, measure the rotation of the discby… … Fig. 174. Fig. 175. balances (a and A, Fig. 174). Tt is convenient thatfour or more of the points {cdef. Fig. 175) shouldbe in the same straight line and at equal distances,let us say 6 cm. The points a, b, g, and A (Fig. 175)mny be placed so tluit ad, dg, be, and eh are at rightangles to cf, and…
Physics
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