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Originally Posted by oldsinner111
I was reading on a new tech for our brains.We generate a electric field,they have a machine to measure this,hopefully it will be used for mental conditions.They use a room shielded with aluminum 1mm thick,3 layers.So to stop incoming EMR from the earths field too.I have not mic'ed tin foil.
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I was not aware of the generated EMF field of the brain. What I did know is certain problems produce excess electrical activity around the brains perimeter. Not a perhaps highly used diagnostic tool but it is used. Probably just as a verification of what is suspected in some cases. Rather than a preliminary diagnostic approach.
As for even thin tin foil. It means that a repeater in the home for cell phone signals is usually required. We make fun of tin foil hats but in a hot climate a hat externally coated with bright aluminum would be a lot cooler on the head. It would be quite easy to vacuum metalise a finish on any hat.