Does anyone know how a Tesla magnifier works?

I am considering making a Tesla magnifier once I've finished my Tesla coil. I know allot of details about its operation conditions but do not understand how the voltage gets stepped up in the extra coil, can anyone explain it?

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Yes, its a separate, resonant coil ,,magnetically coupled to the secondary on the main coil, and pumped by it.
The MadScientist (author)  steveastrouk6 years ago
I thought I would return to this question just how does the voltage get stepped up by the extra coil? (that is the only part I don't understand)
Because the second coil isn't referenced to ground
The MadScientist (author)  steveastrouk6 years ago
What do you mean by that? Isn't it something to do with the secondary coils resonant frequency being 2-4 times greater than the extra coil?
s6 years ago
The process is know as induction.