such oils are liable to decomposi-tion which would render them conductors. 12 STATIC ELECTRICITY. Shellac is a good insulator when properly prepared. Itshould be dissolved in good alcohol and kept from accumu-lating dirt while in its liquid state. Shellac made upwith wood alcohol contains an… … Fig. 3. through the influence of another charged body in itsneighborhood. This is shown in the following experiment.Let the two similar metal hemispheres, Fig. 3, supportedon insulating stands, be placed with their faces in contact.Each hemisphere has a short wire projecting from it, fromwhich is…
Electronics · Electricity
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