Davis's manual of magnetism : including galvanism, magnetism, electro-magnetism, electro-dynamics, magneto-electricity, and thermo-electricity (1854)
Davis, Daniel · Boston : Palmer and Hall · leaf 55
The conducting power of the metals is, of course,in proportion to their reduction of the magnetizingpower of the collateral current. The alloy of silverwith a little copper used in coinage, is the best con-ductor of the metals tried, and platinum the poorest.59. Powder Cup. In fig. 26 is… … of the battery current. Two copper wires, woundwith cotton thread, except at their ends, are joinedby a short piece of fine platinum wire. These wirespass through the bottom of a small glass cup, C, sothat the platinum wire lies free in its cavity. On VOLTAIC GAS PISTOL. 39 putting a little…
