A text-book on chemistry. For the use of schools and colleges (1866)
Draper, Henry, 1837-1882 · New York, Harper & brothers · leaf 159
ay obtain anunlimited number of sparks—positive ones when a islifted, and negative ones when it is down. A little re-flection will show that none of this electricity comesfrom the excited cake 5, but is merely the effect of itsinductive influence on the electric condition of the me-tallic plate a.…
Chemistry · Physics
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