>to investigating which metal foils can be made into hats that best resist government mind control rays or whatever.
You joke, but Allan H. Frey already solved that in the 1960s, just add a 2"x2" wire mesh near the temples, over the temporal lobes. Blocks all RF interaction with the brain, no tin foil hat required.
...of course, this doesn't block 'mind control rays', the only thing it actually blocks consists of the Microwave auditory effect, and the only target audience for that consists of Radar techs walking around in front of hugeass antennas. ;)
You joke, but Allan H. Frey already solved that in the 1960s, just add a 2"x2" wire mesh near the temples, over the temporal lobes. Blocks all RF interaction with the brain, no tin foil hat required.
...of course, this doesn't block 'mind control rays', the only thing it actually blocks consists of the Microwave auditory effect, and the only target audience for that consists of Radar techs walking around in front of hugeass antennas. ;)