A laboratory course in experimental physics (1896)
Loudon, W. J. (William James), McLennan, John Cunningham, joint author · New York and London, Macmillan and Co. · leaf 186
then calculated from the foregoingexpression, and also observed directly by weighing the dryingtubes : the two results should be the same. XV. DENSITY OF A VAPOUR (DUMAS METHOD). This method is one of direct weighing, a glass envelopebeing first weighed when empty, and then when filled with… … Fig. 16. many practical difficulties, and if performed with due care is amost instructive exercise for the student. The apparatus is simple: a glass bulb with a bent stem, afterbeing carefully dried and weighed, has a small quantity of theliquid whose vapour densityis required introduced intoit,…
Physics
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