Theory and practice of the electric telegraph; a manual for operators and students (1875)
Churchill, Charles Henry, d. 1904. [from old catalog] · Oberlin, Ohio, Sherman & bros. · leaf 39
iform;if a cylinder, with rounded ends, the intensity is greatest atthe extremities and nearly neutral in the middle. The forcewill accumulate on every projection. 2. Does the charge reside on the outside or does it pervade all the atoms of abody? It manifest^ itself on the surface only. A hollow…
Telegraph
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
![An illustration from Io. Batis. Portae Neap. De humana physiognomia li. VI : in quibus docetur quom[odo] animi propentes naturalibus remediis compesci possint (1602)](https://img.insideoutlibrary.com/img/200/ia-iobatisportaenea00port-141-185.webp)
