Lockyer, Norman, Sir, 1836-1920, Seabroke, G. M. (George Mitchell), 1848-1918 · London, Macmillan and co. · leaf 346
ies ofimpulses on the break-wheel of such a force and nature as tokeep the train freely governed by the pendulum. The uniform rotatory motion obtained by this clock as far asexperiments can be made by applying widely different weights, CHAP. XX.] METHODS OF MOUNTING LARGE TELESCOPES. 323 and… … Fig. 148.—Foucaults governor. The form of governor most usually employed will beseen in figures previously given. The governor raises aplate and thus becomes a frictional governor, by which Y 2 324 STARGAZING : PAST AND PRESENT. [book v. all overplus of power is used up in frictions, or by…
Astronomy · Telescopes
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