❝ Let’s say some malevolent group — the government, powerful corporations, extraterrestrials — really is trying to read and/or control your thoughts with radio waves. Would the preferred headgear of the paranoid, a foil helmet, really keep The Man and alien overlords out of our brains?…
❝ In 2005, a group of MIT students, prodded by “a desire to play with some expensive equipment,” tested the effectiveness of foil helmets at blocking various radio frequencies. Using two layers of Reynolds aluminum foil, they constructed three helmet designs, dubbed the Classical, the Fez, and the Centurion, and then looked at the strength of the transmissions between a radio-frequency signal generator and a receiver antenna placed on various parts of their subjects’ bare and helmet-covered heads.
The helmets shielded their wearers from radio waves over most of the tested spectrum…but, surprisingly, amplified certain frequencies: those in the 2.6 Ghz (allocated for mobile communications and broadcast satellites) and 1.2 Ghz (allocated for aeronautical radionavigation and space-to-Earth and space-to-space satellites) bands.
❝ While the MIT guys’ tongue-in-cheek conclusion — “the current helmet craze is likely to have been propagated by the Government, possibly with the involvement of the FCC” — maybe goes a few steps too far, their study at least shows that foil helmets fail at, and even counteract, their intended purpose. That, or the students are aliens who fabricated these results in an effort to get you to take your perfectly functional helmet off.
I have no reason not to believe the latter conclusion. If not under extra-terrestrial control, the NSA will suffice.
If there’s a difference.