Stream, can easily float upon water whichis colder and therefore denser. When a mass ofwater is unequally heated, by raising its tem-163 Masterpieces of Science perature below, or by lowering it above, currentsare at once established; and, if light matter,such as sawdust, be suspended in the… … Fig. 46.—Currents in waterby heat Fig. 470—Currents in waterby cold colder water being denser, runs down in streamsto supply the place of that which has ascendedto the surface. This is, in fact, the ordinary wayin which heat is propagated through a body ofliquid, and the^process is called…
Astronomy · Geology
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