The Popular Educator, Τόμος 4John Cassell, 1854 |
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Σελίδα 239
... barometer , weighs 20 grains , the same quantity of hydrogen weighs 1.39 grains , or about 14 times less than air ; and the same quantity of hydriodic gas , which is the densest of the gases , weighs 89 grains . The Pressure of Gases ...
... barometer , weighs 20 grains , the same quantity of hydrogen weighs 1.39 grains , or about 14 times less than air ; and the same quantity of hydriodic gas , which is the densest of the gases , weighs 89 grains . The Pressure of Gases ...
Σελίδα 254
... BAROMETER . • Cistern - Barometer . - Instruments which are employed to mea- sure the weight or pressure of the atmosphere are called barometers ( from the Greek baros , weight , and metron , mea- sure ) . Barometers are of two kinds ...
... BAROMETER . • Cistern - Barometer . - Instruments which are employed to mea- sure the weight or pressure of the atmosphere are called barometers ( from the Greek baros , weight , and metron , mea- sure ) . Barometers are of two kinds ...
Σελίδα 255
... barometer . The Siphon Barometer . - The siphon barometer is composed of a glass tube bent into two unequal branches . Of these , the greater , which is closed at the top , is filled with mercury , like the cistern barometer ; and the ...
... barometer . The Siphon Barometer . - The siphon barometer is composed of a glass tube bent into two unequal branches . Of these , the greater , which is closed at the top , is filled with mercury , like the cistern barometer ; and the ...
Σελίδα 256
... barometer is found by taking the height every hour for 24 hours , and dividing the sum of these heights by 24. M. Ramond has observed that , in France , the height of the barometer at noon is almost exactly the same as the mean diurnal ...
... barometer is found by taking the height every hour for 24 hours , and dividing the sum of these heights by 24. M. Ramond has observed that , in France , the height of the barometer at noon is almost exactly the same as the mean diurnal ...
Σελίδα 257
... Barometer , or Weather Glass . - As an elegant piece of household furniture , and not as a philosophical instrument , the wheel barometer is specially intended to indicate good or bad weather ! It is sometimes called the dial barometer ...
... Barometer , or Weather Glass . - As an elegant piece of household furniture , and not as a philosophical instrument , the wheel barometer is specially intended to indicate good or bad weather ! It is sometimes called the dial barometer ...
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acid adjectives adverbs ammonia antimony aorist apparatus arsenic atmosphere barometer body bottle called Cash Account CASSELL'S compound contains Cotton Account dative denotes density direction employed English equal example exercise exterior angle Florence flask force fraction French genitive given glass grave accent gravity greater Greek hence hydrogen inches Italian language Latin latter LESSONS liquid London and Westminster manganese marked means mercury metal motion nitric acid noun object orifice oxygen pá-dre participle particles Perfect Tense piston Pluperfect Tense plural precipitate preposition present pressure pronounced quantity qué-sto remark right angles rocks scale sentence side solution sound straight line student sulphur sulphuret surface syllable Tense thou tion triangle tube ú-na University of Pavia velocity verb vessel vowel weight werde Westminster Bank words würde zinc ας δε εν εστιν ης Οἱ ον ου