Appleton's dictionary of machines, mechanics, engine-work, and engineering : illustrated with four thousand engravings on wood ; in two volumes (1873)
D. Appleton and Company · New York : D. Appleton and Co. · leaf 438
was made by Bunsen andGroves, by using nitric acid in contact with the platinum plate, contained in the porous earthenwarevessel, shown in the preceding figure. Sulphuric acid, diluted with four or five parts of water, ispoured into the outer glass vessel containing the sine cylinder, which has a… … Buu sens battery i very generally u=ed on the continent of Europe. Cylinders of carbon, in contactwith the nitric acid, are substituted for platinum, the carbon being moulded to an iron tube, by cokingpounded bituminous coal therein. By soaking the coke in sugar, and calcining it a second time,…
Mechanical engineering · Mechanics · Engineering
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