ElectroMichel

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

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 DC or AC magnetic fields?

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

Which Metal/Alloy has the highest relative permeability at 12 Tesla?

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 question is this: what if the mumetal is irradiated simultaneously with a high frequency (above 600 Hz) signal, and an ELF (0.5-100 Hz) signal, will the ELF signal be able to penetrate the mumetal (Assuming that it cannot on its own), or will the combination of the two create a new unique signal that does not classify as being between 0.5-100 Hz?