A course of experiments in physical measurement (1897)
Whiting, Harold, d. 1895 · Boston, D.C. Heath and Co. · leaf 340
ph (see ^ 266).Curves traced simul-taneously l>y the arma-ture of an electricalsounder and by a tuning-fork (see Exp. 52) en-able us to estimate pre-cisely exceedingly sH\allintervals of time. (3) There are variousdevices in which themotion of a body maybe directly recorded by the graphical… … Fig. 142. 310 DYNAMICS. of revolution is known, we may obviously infer theposition of the body at different points of time fromthe tracing (a6) made by the pencil. Another device in which the vibrations of a tuning-fork attached to a falling body may be made to indi-cate its position, will be found…
Physics
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