Cumming, Linnæus, b. 1843. [from old catalog] · New York, D. Van Nostrand · leaf 90
Fig. 47. In the same manner, if a sheet of paper, before it is excited, becut up into narrow strips, only held together along one edge,after excitement the strips show a violent repulsion, curlingup away from one another. 53. Conductors and Non-Conductors or Insulators. --There is a class of… … Fig. 48. examples, which do not show any sign of electrification whenexcited by friction. This is the case with a brass rod held in 7 2 Electricity. [Book n. the hand, and rubbed with a cats fur or a silk handkerchief.If, however, the brass rod be supported on a handle of glass(Fig. 48) or ebonite,…
Electricity
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