Electric toy making for amateurs. This work treats on the making of electrical toys, electrical apparatus, motors, dynamos and instruments in general ... By T. O'Conor Sloane .. (1914)
Sloane, T. O'Conor (Thomas O'Conor), 1851-1940 · New York, The N.W. Henley publishing co. · leaf 22
orous cup. The exciting solution is a ten per cent, solution ofcaustic soda. The wires are connected as shown, oneto the zinc plate and one to the can itself. The battery is liable to polarization, but the largesurface of the iron protects it to some extent. If it is desired to make it constant or… … Fig. 3. A Tomato Can Battery. with. This makes it a Lalande-Chaperon battery.The E. M. F. is about .75 volt. Materials for Battery Cells. Before leaving the subject a word may be said on the cell proper. Porcelain marmalade jars make excellent receptacles for small couples. In selecting a vessel…
Electric apparatus and appliances · Electric toys
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