On the deflections of the magnetic needle, producible by contact of metals with each other, and by their attrition; with some observations on the applicability of these deflections to the purposes of telegraphic communication.

Bibliographic Details
Main Author: Donovan, Michael
Citation:Proceedings of the Royal Irish Academy, Ser. 1, Vol. IV, pp. 261-267, p. 273, 1847-50
Format: Journal Article
Published: 1847-50