Heavy weight 3 lies on flexible
plates a rig id ly fixed in housing
4. When the distance between
fixed plate 1 and movable
plate 2 of the capacitor is
varied, its capacitance is
changed. This distance is varied
by the vibrations of housing 4
which can be measured and recorded
by connecting capacitor
1-2 into an electrical measuring
circuit.
$4347$SmE,M$