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Scientific American, Vol. 62, No. 8 (February 1890) (1890)
leaf 8
nation. Hence, the meter readings luted to twenty liters by adding water. The solution L', is sliown, as indicated by the dotted line, Q, and represent lamp hours in 16 candle power lamps, more must be faintly acid, turning blue litmus paper deep vice versa. intelligible to the consumer than… … and constantly rotated, however badly Fig. 10.-VOLT HETEB. Fig. ll.-AKFEBE HETEB. © 1890 SCIENTIFIC AMERICAN, INC.Patents · Current · Zinc · Scientific American · Solution · Steam engine · Patent office · Post office · Hydrochloric acid · Water gas · Electric lighting · Saturated solution · Sulphuric acid · Electromotive force
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