Machinery and processes of the industrial arts, and apparatus of the exact sciences (1869)
Barnard, Frederick A. P. (Frederick Augustus Porter), 1809-1889 · Washington, Govt. print. off. · leaf 642
ane, it will slidewithout turning. If itbe then carried forwardin the direction of itsplane from B to C, beingfree to roll, it will de-velop an arc equal to BC. And if it be carriedin a straight line, A 0,from the initial to thefinal point of movement,it will both slide androll, and the arc… … 626 PARIS UNIVERSAL EXPOSITION. gle be represented by ?, the length of path by #, and the arc developedby 0, the relation expressed in the following equation will always sub-sist, viz: 0=acos (p.In order to apply this principle to the operation of the planimeter, werefer to Fig. 148, in which P…
Machinery · Scientific apparatus and instruments
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