How Everything Works
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QUESTIONS AND ANSWERS
 
Question 1497

Many of the new cordless phones operate at 2.4GHz like a microwave oven. Are we microwaving our ears when we use them, or is the wattage so small it doesn't affect us? - R
As far as anyone has been able to determine so far, the wattage is so small that this microwave radiation doesn't affect us. Not all radiations are the same, and radio or microwave radiation is particularly nondestructive at low intensities. It can't do direct chemical damage and at low wattage can't cause significant RF (radio frequency) heating. At present, there is thus no plausible physical mechanism by which these phones can cause injury. I don't think that one will ever be found, so you're probably just fine.
         

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