Leyden Jar with
Lane's Discharging Electrometer
A Lane apparatus is a
Leyden Jar fitted with a calibrated spark gap. They were used primarily
in medical applications, in order to regulate the amount of voltage
applied to the patient.
This jar can
be separated into three parts: The outer metal can, the glass jar, and
the inner metal electrode. It was used to demonstrate that the charge in
a Leyden jar is held in the glass, not the metal.
Horizontal Leyden Jar