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What is the motor threshold, when using transcranial magnetic stimulation, in Tesla?

in which way?

In the form of AC or DC magnetic fields?

I am trying to reduce the magnetic field strength of a powerful source, beneath the saturation induction of mumetal

Is there any difference as to how a DC magnetic wave effect the relative permeability of an alloy, compared to an AC magnetic wave?

Does the human brain produce AC or DC magnetic fields?

What is the difference between AC and DC magnetic properties? What should I be aware of when calculating penetration depth?

Which metal has the highest relative permeability at 12T?

how does the magnetic saturation of an alloy, explain why signals mix or not?

What happens on an atomic level when dealing with linearities and non-linearities?

How do you know if the medium is nonlinear or linear?

So basically the ELF signal will travel through the metal the same with or without the presence of a second higher frequency signal (Even if they both irradiate the same area)? What do you mean by "in the absence of nonlinearities"?

I am doing a shielding experiment, where I wish to shield against frequencies of 0.5 - 100 Hz. For this purpose, I have chosen Mumetal. Unfortunately Mumetals initial permeability has a dependency on frequency, meaning after around 500-600 Hz the initial permeability will plummet towards 1. My...