A London encyclopaedia, or universal dictionary of science, art, literature and practical mechanics : comprising a popular view of the present state of knowledge : illustrated by numerous engravings, a general atlas, and appropriate diagrams . fi< JcndcHSufi/tsAr,?fit-TAfntat Ztyf (/i,?<//•.•?/./.?. Vorem&er /^Al?, S. ul|. HYGROMETER. 525 that the wood shrinks most in summer, andswells most in winter, but is most liable tochange in the spring and fall; that this motionhappens chiefly in the day-time, there beingscarcely any variation in the night; and thatthere is a motio
A London encyclopaedia, or universal dictionary of science, art, literature and practical mechanics : comprising a popular view of the present state of knowledge : illustrated by numerous engravings, a general atlas, and appropriate diagrams . fi< JcndcHSufi/tsAr,?fit-TAfntat Ztyf (/i,?<//•.•?/./.?. Vorem&er /^Al?, S. ul|. HYGROMETER. 525 that the wood shrinks most in summer, andswells most in winter, but is most liable tochange in the spring and fall; that this motionhappens chiefly in the day-time, there beingscarcely any variation in the night; and thatthere is a motion even in dry weather, the woodswelling in the morning, and shrinking in theafternoon : also that the wood by night as wellas by day, usually shrinks when the wind is inthe north, north-east, and east, both in summerand winter; that by constant observation of themotion and rest of the wood, with the help of athermometer, the direction of the wind may betold nearly without a weather-cock. Drs. Hales and Desaguliers contrived anotherform of sponge hygrometer. They made an hori-zontal axis, having a small part of its length cy-lindrical, and the remainder tapering conicallywith a spiral thread cut in it, after the manner ofthe fuzee of
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Keywords: ., bookcentury1800, bookdecade, booksubjectaeronautics, bookyear1829
