Vortex Coil Testing Resonance

Sharing some observations of vortex coils being used in an audio amplifier. Not your conventional type of coil winding and a completely different way of looking at capacitance in oscillating coils.

Something to think about from the generalized established understanding, " The magnitude of the reactance of an inductor rises in proportion to a rise in frequency, while the magnitude of the reactance of a capacitor decreases in proportion to a rise in frequency. As frequency goes up, inductive reactance goes up and capacitive reactance goes down." Electrical reactance - Wikipedia

I understand my meter is not the best for this and I will be doing this again with the right kind to get an accurate reading.

I'm a student of electrical research if anyone can explain what I'm seeing, I'm open to hearing it.