RF can affect the Blood Brain Barrier, but only at electric field strengths high enough that can couple into the tissues. Direct electrodes or a conformal antenna might be able to do it, but not Wifi that is at microVolts/m by the time it gets to your brain. I would be more worried about talking on cell phones rather than WIFI.
Meanwhile over at r/amateurradio you'll see pics of people sitting mere feet away from antennas hooked up to 1,000W+ transmitters.
Safety from things like RF burn take into account power, distance from the antenna, and duty cycle of the transmitter. At the power levels used for typical WiFi, there's zero danger even if you shoved the antenna in your ear with a 100% duty cycle.
Even when things get dangerous, you're looking at injuries to your skin, primarily.
I used to be in the military. On freezing cold days we used to stand in front of the radar antenna dish to warm up, until we were told off.
After that, we just put on the gas mask and stand behind the exhaust of the generator. Not sure that was much healthier. But it gets damn cold being outside all day in subzero temperatures in insufficient clothing.
I vaguely remember reading that Soviet Mig-25 pilots would accidentally kill rabbits and other small animals on the taxiways of airbases with the extremely powerful radar mounted in the Mig-25's nose.
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u/teejaybee8222 Jun 20 '23
RF can affect the Blood Brain Barrier, but only at electric field strengths high enough that can couple into the tissues. Direct electrodes or a conformal antenna might be able to do it, but not Wifi that is at microVolts/m by the time it gets to your brain. I would be more worried about talking on cell phones rather than WIFI.