• If either rotate on its axis, in the same or nearly the same plane as it revolves, that one is necessarily subject to tides.
• But the constant motion of the tides offers, at some favored points, a source of power that will remain as long as the earth revolves upon its axis.
• From a heap of tailings the miner can select a sample, by boring into it with a thin tube, inside of which revolves a shaft carrying at its end a flat steel rotary scoop.

0. Word pronunciation is derived from article recording Universe, License CC BY-SA 4.0