Tyndall, John, 1820-1893 · New York, D. Appleton · leaf 131
ttle.The bottle is closed by a screw firmly fixed in its neck.Two bottles thus prepared are placed in a copper vessel,and surrounded with a freezing mixture. They coolgradually, the water within them approaching its point ofmaximum density. No doubt, at this moment, a smallvacuous space exists… … more room, which the rigid iron refuses to grant. Butits rigidity is powerless in the presence of these molecularforces, and the sound you now hear indicates that the*bottle is shivered by the crystallising molecules. Theother bottle follows; and here are the fragments of thrvessels, showing their…
Heat
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