Merchant, F. W. (Francis Walter), 1855-1937, Fessenden, Cortez, b. 1852 · Toronto : Copp, Clark · leaf 249
ensity. Being then lighterthan the wanner water below, the surface water remainsat the top, and, when its temperature falls below thefreezing point, ice forms and remains at the surface. Why is the fact that water at 4° C. is denser than ice said to bea wise provision in the economy of nature 1 7.… … Fig 185. TRANSMISSION OF HEAT. 241 direction of the circulation. The hoiler A, filled with water, isheated by a furnace in the basement of the house. The upperpart of the boiler is connected by means of a pipe with anexpansion tank D, placed in the top of the building. Anotherpipe passes downward…
Physics
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