Mass Of Electron Apparatus,

Description

SP4-2012
W/Tube,W/O Solenoid Mass of Electron apparatus is a ‘Magic
Eye’ tube mounted on a base with terminals to accept both heater
and plate voltages. A fan of electrons can be seen by viewing
through the end of the tube. An Air Cored Solenoid is placed over
the tube and a current passed through the solenoid. The field at
the centre of the solenoid causes the fan to curve (distort) and
this curvature is measured to permit the approximate mass of an
electron to be calculated..
SP4-2012