Why is the radiation emitted by cell phones, microwaves and computers not harmful to us?
The actual amount of power emitted by any of these devices is very small (with the exception of damaged microwaves). None of them are high energy “ionising” radiation in which a single photon can do damage. So the only thing they can do is slightly heat your body. In the case of the mobile phone, the maximum energy it can emit is 1/4 watt, which is less than the energy falling on the top of your head on a cloudy day. The other things have similar limits. So it is simply not enough power to do any harm by any *known* mechanism. Of course, there may be unknown mechanisms – but you coud say that about anything.
Here’s one for cell phones – http://skeptoid.com/episodes/4117 Here’s the FDA’s article for microwaves – http://www.fda.gov/cdrh/consumer/microwave.html Here’s a NY Times article for computers – http://query.nytimes.com/gst/fullpage.html?res=950DE2DB113CF933A25751C1A96F948260 Now, there are plenty of “scare” sites out there, usually selling a shield of some sort. Don’t fall for them.
