Experimental engineering and manual for testing. For engineers and for students in engineering laboratories (1906)
Carpenter, Rolla C. (Rolla Clinton), 1852-1919 · New York, J. Wiley & Sons; [etc., etc.] · leaf 321
he velocity of the submerged ball be vx = 2Vm — v0. A floating staff that remains vertical in still water is some-times used. In case floats are used, the velocity is obtained by notingthe time of passing over a measured distance. The measureddistance should be marked by sights, so that the line of… … Fig. 141.—The Tachometer. firs; auid last lines of the course is to be determined by a stop-watch. 221. The Tachometer, or Woltmans Mill, consists of asmall water-wheel connected to gearing so as to register the § 221.] MEASUREMENT OF LIQUIDS AND GASES. 29 I number of revolutions. The wheel is…
Building materials · Machinery
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