How Two Boys Made Their Own Electrical Apparatus
How Two Boys Made Their Own Electrical Apparatus
Containing Complete Directions for Making All Kinds of Simple Apparatus for the Study of Elementary Electricity
Book Excerpt
ted. (App. 20.)
APPARATUS 6.
[Illustration: Fig. 6.]
7. Experimental Cell. Fig. 6. In some experiments a comparison is made between cells with large plates and cells with small ones. This form will be convenient to use where narrow plates are desired. Those shown are 4 × 1/2 in. They are screwed to the cross-piece, which is 4-1/2 × 1 × 7/8 in. Do not let the screws touch each other. The wires are fastened under the screw-heads.
APPARATUS 7.
[Illustration: Fig. 7.]
8. Experimental Two-fluid Cell. Fig. 7. This cell has a zinc strip, Z, and copper cylinder, C, for the "elements." The porous cup, P C, is fully described in App. 11. Z is 5 × 1 in., and should be well amalgamated (App. 20). (Study reasons for amalgamation.) A zinc rod, like that shown in Fig. 4, may be used instead of the strip. The copper cylinder, C, nearly surrounds P C, and is made from a piece of thin sheet-copper, 6 × 2 in. The narrow strip, or leader, A
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