Bauhaus-Universität Weimar

Titel:
The Art of Projecting. A Manual of Experimentation in Physics, Chemistry, and Natural History with the Porte Lumière and Magic Lantern
Person:
Dolbear, A. E.
PURL:
https://digitalesammlungen.uni-weimar.de/viewer/image/lit39441/160/
ELECTRICITY. 
*55 
dissolve while others will grow upon the other terminal. 
The same thing can be done still better by filling the 
horizontal tank for the vertical attachment with the 
solution of lead acetate, and then bending a piece of 
platinum wire or of tin wire around the interior of the 
tank. Then, on inserting another wire at the centre of 
the solution, and making connection with two or three 
cells so as to make the centre wire the negative and the 
hoop the positive pole, a beautiful growth of metallic 
crystals will shoot out from the centre and spread out 
over the entire field. In place of the solution of lead 
use a strong solution of the bichloride of tin, using a 
tin hoop in the solution. Crystals of tin will shoot out 
and appear in great beauty. 
These solutions in the horizontal tank should not be 
more than an eighth of an inch deep. 
HEATING BY THE CURRENT. 
Make a small coil of platinum wire, and thrust the 
ends of the wire through the rubber of the tank, as 
Fig. 112. 
shown in the engraving, Fig. 112. Fill the tank with 
water, and having projected the whole, send the current
        

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