A text-book on chemistry. For the use of schools and colleges (1866)
Draper, Henry, 1837-1882 · New York, Harper & brothers · leaf 39
d by heat. It consistsessentially of a metallic bar, a a, resting at one end againstan immovable prop, e; the other end bearing upon alever, b. The extremity of this lever presses upon asecond lever, e, which also serves as an index. Upon Explain its formation. What effect has the addition of salt… … Fi9-18- the index-lever a. spring acts so asto oppose the le-ver b, and thepoint of the in-dex ranges over agraduated scale,d. If lamps be ap-plied to the barit expands, andthe pressure, tak-ing effect on the lever, puts it in motion, the index trav-ersing over the scale. On removing the lamps the…
Chemistry · Physics
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