Journal - Franklin Institute of the State of Pennsylvania (1826)
Franklin Institute, Philadelphia, Franklin Institute (Philadelphia, Pa.) · [Philadelphia : Franklin Institute] · leaf 330
clear that in this experiment is pre-sented unquestioned evidence of that polarity which has apparentlybeen ivanting, and which want has thus far furnished the only groundsfor the assumption of the discovery of a new force. That the non-appearance of the spark at P was due to an exactneutralization… … 274 Chemistry, Physics, Technology, etc. We found that it was not necessary to employ cores surrounded bycoils of wire to produce the so-called etheric force. We note thefollowing experiment: a hollow cylinder of non-conducting materialas a test tube was covered on the outside with a sheet of…
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