Greenhill, G. (George), Sir, 1847-1927 · London and New York, Macmillan and Co. · leaf 263
empty space above called the Torricellianvacuum (fig. 56); this arrangement is called a Barometer,and it serves to measure the atmospheric pressure. 252 THE SIPHON BAROMETER. The barometer may also be constructed, though not soeasily, by filling with mercury the bent tube closed at 0of fig. 57 when…
Hydrostatics
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