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Show f RADIO PRIMER ) 4 COPPER-ADVANCE. Trade name for an alloy of copper and nickel, a material that is widely ijj. used fur resistance colls and rheo-Its rheo-Its resistivity Is high and its rature co-officlent Is practically negligible. J J j BANK WINDING A method of 1 j winding an Inductance coll In layers or for the reception of long wave lengths This eliminates the neces- f slty of adding separate colls to tho C primary inductance, which take up Ij more space than can be afforded i Electrolyte A salt or acid solution thnt conducts electricity. The solution solu-tion ln the filament storage battery Is Wj an electrolyte. oo |