Johnson's natural philosophy and key to philosophical charts : illustrated with 500 cuts; being reduced photographic copies of all the diagrams contained in the author's philosophical series of indestructible school charts ; for the use of schools and families (1878)
ind each ball, which gives each of them a forward motion(tliat is, toward the handle) ; but if the cylinder be revolved the otherway, they will have a backward motion. Hence, by one revolution thehall 1 would move forward to the position of ball 3; and ball 2 to thatof ball 4; and soon; until they… … Such screws are employed to elevate, besides water, ores, grain, etc.,and are commonly set at an inclination of about 45°. 172. Figure 17.—Hydraulic ram.—In this machine the mo-mentum of a part of the fluid in motion is effective in raising another Fig. 17.
Physics · Astronomy
Internet Archive · University of Connecticut Library · Public Domain Mark 1.0. Free to use for anything.
