Merchant, F. W. (Francis Walter), 1855-1937, Chant, Clarence Augustus, 1865-1956 · Toronto : Copp Clark · leaf 210
amativg thezinc. This is done by washing the plate in dilute sulphuricacid, and then rubbing mercury over its surface. The mercurydissolves the zinc, and forms a clean uniform layer of zincamalgam about the plate. The zinc now dissolves only whenthe circuit is closed. As the zinc of the amalgam… … Fig. 210.—>.iiijil LTahanoscope. The wirepasses several tiinci around the frame, andits ends are joined to the binding-posts. 236. Detection of an Electric Current. We liave seen(§ 233) that when tlie wire joiniii*^^ the plates of a voltaic cellis brought over a magnetic needle, tlie needle…
Physics
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