Poynting, J. H. (John Henry), 1852-1914, Shakespear, Gilbert Arden, ed, Barlow, Guy, joint ed · Cambridge, University Press · leaf 199
r-screws are withdrawn so that neither is in contact with the rider,that on the left so far that the rider will not touch it in its subsequent travel.The beam is lowered and allowed to swing. Then the right-hand screw isadvanced till it bears against the end of the rider and pushes it some… … Fig. 2. Arrangement of right-hand micrometer-screw. read. Let its reading be m-^. It is then withdrawn a little so as to leavethe rider free, and the centre of swing 0^ is determined in the usual wayfrom three successive turning-points. Then the micrometer is advancedagain so as to push the rod a…
Poynting, J. H. (John Henry), 1852-1914 · Physics
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