Vibration Period.
In electrical resonance the period of a vibration in an electrical
resonator. The length of this period indicates the quality of the
resonator in responding to electrical oscillations by sympathetic
vibration. For conductors of small resistance the period is thus
calculated. Let T be the period of one-half a full vibration; L the
absolute coefficient of self-induction expressed in centimeters or in
henries X 10-9; C the electrostatic capacity of the terminals, also
expressed in the same unit; v the velocity of light in centimeters per
second. Then we have the formula