A text-book on chemistry. For the use of schools and colleges (1866)
Draper, Henry, 1837-1882 · New York, Harper & brothers · leaf 19
HISTORY OF CHEMISTRY. closely together, they cohere, and can only be partedby the exertion of considerable force. The distance through which these forces, attractionand repulsion, act, is very minute; for if, in the aboveexperiment, the bullets be separated by the smallest in-terval, no attraction… … of an inch intervenes, as wasshown by Newton. The samefact is proved by the apparatusFig. 5, which consists of a plateof glass, a, supported over somemercury in a cup, e. To theother arm of the balance, b c, ishung a pan, <?, containing weights. As long as theglass and mercury are not in contact…
Chemistry · Physics
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