 Inductors oppose change in current!
Kirchhoffâ€™s Law! (Now, we are going to tailor it to our specific system!)
$c1â€‹Q+(L)dt_{2}d_{2}Qâ€‹=0$
This is a differential equation!

The first term represents the capacitor, and the second represents the inductor!
Looking at the oscilloscope, we end up with this function!
$Q(t)=Q_{max}cos(Ď‰t)$ Knowing this now, we can plug that back in to receive another equation
Ď‰ = Angular Frequency (rads/sec) L = Self Inductance (H, Henrys) C = Coulombs (C) T = Period (Seconds)
$T=Ď‰2Ď€â€‹$ $T=2Ď€LCâ€‹$