On 02/19/2011 09:58 PM, Terry Blanton wrote: > http://berkeley.intel-research.net/arahimi/helmet/ > > "Abstract > > Among a fringe community of paranoids, aluminum helmets serve as the > protective measure of choice against invasive radio signals. We > investigate the efficacy of three aluminum helmet designs on a sample > group of four individuals. Using a $250,000 network analyser, we find > that although on average all helmets attenuate invasive radio > frequencies in either directions (either emanating from an outside > source, or emanating from the cranium of the subject), certain > frequencies are in fact greatly amplified. These amplified frequencies > coincide with radio bands reserved for government use according to the > Federal Communication Commission (FCC). Statistical evidence suggests > the use of helmets may in fact enhance the government's invasive > abilities. We speculate that the government may in fact have started > the helmet craze for this reason." > > <more with piccys!> > > Jones, I don't think they were well grounded.
I knew their work. Without proper grounding the amplification affect makes sense: The aluminium foil probably serves as a rudimentary antenna for signals of the right wave length, that is, of around 10-20 cm. The experiments are worth repeating with proper grounding, in my opinion. I appropriately informed the creators of the AFDB <http://zapatopi.net/afdb/>, but never got any reply. I did not tried to contact the authors of the paper, for obvious reasons ;)
