Eighth International congress of applied chemistry - Washington and New York, September 4 to 13, 1912 - (1912) (14583209367)

Identifier: eighthinternatio26inte (find matches)
Title: Eighth International congress of applied chemistry : Washington and New York, September 4 to 13, 1912 ... --
Year: 1912 (1910s)
Authors: International Congress of Pure and Applied Chemistry. 8th, Washington, D.C., and New York, 1912
Subjects: Chemistry, Technical Chemistry
Publisher: (Concord, N.H. : The Rumford press)
Contributing Library: ASC - York University Libraries
Digitizing Sponsor: York University - University of Toronto Libraries



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f the mixtures were madedirectly upon the depolarizing material as removed from thebatteries, but previous to making the test all of the mixtures werepassed through a ten mesh screen. The internal resistance of thebattery depends, naturally, not only on the conductivity of themixture but also the tightness with which it has been compressedin filling the cell. An additional factor influencing the internalresistance that will result from any given mixture, is not onlythe weight per unit volume of battery space, but also the mannerin which the packing is performed. The remaining common ingredient of dry cells is the least costlyof all, but is nevertheless of considerable importance. This isthe air occupying the void spaces in the depolarizing mixture,that is space not occupied by water, salts, carbon, graphite ormanganese dioxide. The volume of voids varies from about3 to 15 cubic centimeters. All of the data given have referenceto a standard #6 cell, the dimensions of which are 2\ by 6.
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xxvi) Congress of Applied Chemistry 513