On a self-recovering coherer and the study of the cohering action of different metals (Reprinted from Proceedings of the Royal Society, vol 65, pg 166-172, 1899)

A systematic study of the action of different metals as regards to their cohering properties is conducted. The state of sensitivity of the coherer to electric radiation is less transitory, and is induced generally speaking, by a somewhat unstable contact and low EMF acting in the circuit. In the majority of the metals, the normal tendency is toward a diminution of contact resistance by the action of electric waves. The occasional increase of resistance, in general when the pressure and EMF are increased.