Electro-Medical Instruments and Their Management, and Illustrated Price List of Electro-Medical Apparatus
by K. Schall
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Description
Excerpt from Electro-Medical Instruments and Their Management, and Illustrated Price List of Electro-Medical Apparatus It is of the greatest importance and convenience that there are bodies which conduct, and others which do not conduct electricity, for we are thus enabled to direct the electricity exactly to the spot where we desire its action, and to send it along metal wires which are supported by insulators, over any distance we like.