Physical laboratory experiments : mechanics, optics and heat (1917)
Goodwin, H. M. (Harry Manley), 1870- · Boston : G. H. Ellis Co., Printers · leaf 81
le in any case. The height of the barometer may then beread either by means of a cathetometer, or a telescope andscale. The latter method is to be preferred. A second andthird setting should be made by opening D and allowing themercury to take up a new position in both arms. Aneroid… … rig. 83. ing barometer or barograph, is shown in Fig. 23. Theessential part of the instrument consists of a series of flat-tened cylindrical boxes of thin metal placed on top of eachother and separated by small pieces of metal attached to thecentre of each. The boxes are corrugated so as to render…
Physics · Mechanics
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