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Seems the question is a bit old, but I am doing some work with BLE devices and I stumble upon this page, so I will leave my experience as reference for others.
I can confirm that alluminum foil works as long asthe wrapping is complete (no holes) and its 2-3 layers.
Getting creative with the foil and some origami got the work done :D
if you are trying to unground yourself from a grounded signal that uses iron tectonic plates as a antanii Use magnets to make a magnetic floating box!I am currently working on one!dont use a grounder cable to the earth.. it uses that as antenii Maters of the brain. If you fantasize and have problems?Don't get emotional next..when the day comes you will know what I mean!!!
hi I see the author is a ari g fan
2.4 GHz is on the high end of the radio frequencies and the 5 GHz is on the very high radio to low microwave frequencies. If you want to block electromagnetic frequencies(Wifi) , use bodies of water. The only thing that can get through them is extremely low frequencies (ELF) which broadcasts at about 1 hertz, nowhere near 2.4 gigahertz. ELF is what navy subs use to communicate with others.
An interesting study on cress seedlings was done by 9th grade Danish students. The experiment was repeated by a young Michigan boy, Aiden Fitchett, an article in TriCity Times. You also might want to take a look at the recent studies at the BioInitiative Report 2012.
One of the problems "proving" wireless signals are biologically harmful is "replication" of effects. The problem is genetics of plants/cells/animals vary, as do human weaknesses and strengths. Some people can smoke all their lives and never get cancer, while others get cancer from 2nd hand smoke...just to help understand radiofrequency radiation risks.
To understand the science and how people treat the science on RF see at YouTube Dr. Ted Litovitz giving a talk to U.S. Congress in 2001. It will help to understand the controversy and what it means to take no precautions.
Interestingly, recently the CDC actually issued a stronger warning of RF from cell phones, esp. for children, and then it flip-flopped and RETRACTED it. Within a few days. There is much political pressure to not find any harm, and to not acknowledge biological damaging impacts, sad to say. Fascinating topic.
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Posted:Mar 13, 2011
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