| It's not necessarily a good argument to compare to sunlight, because we also have take into account biological adaptation. Sunlight has existed for millions of years on this planet, and therefore all biological life has had time to adapt to it. Human skin for example, has both a protection mechanism, in the form of melanin, and a utilizing mechanism, in the form of vitamin D production. So these are the two things you would normally expect to happen with adaptation: protection and utilization. But when it comes to RF radiation, especially in the microwave range, the natural background flux is not 1000W/m2, but 10^-18 W/m2 (!), at 1 GHz. The current safety limits again are set at around 10W/m2 @ 1Ghz. That's a difference to the background of over a quintillion times (18 zeroes). See image here for reference: https://pbs.twimg.com/media/Dt2NMoJU4AE2oYY.jpg Because the background has been 10^-18 W/m2, we can consider it basically nonexistant, and therefore there has been no adaptation to these frequencies, no utilization, and no protection. But there is another difference to natural sunlight also, and that is that man-made RF is not continuous, but pulsed. Consider what would happen, if the sun suddenly started pulsing on and off a few thousand times per second. These are some of the factors that need to be taken into consideration. It is not as simple as just saying that pulsed microwaves are just like sunlight. From both a physics standpoint, but especially from a biological standpoint, they are not the same, and that is where the problems come from. |
Even with all our adaptations we still get cancer from sunlight on a regular basis.
It is easy to understand why, UVB light is near ionizing has enough energy to damage human DNA causing cancer.
Below UVB there is not enough energy to cause DNA damage through a known mechanism except heating.
Heating directly related to power absorption, a 1500 watt microwave will cook you a 300 milliwatt pulsing microwave transmitter will not heat your flesh enough to cause any damage.
We have a pretty good grip on how various frequencies of radiation affect human biology and cell phone emissions are orders of magnitude lower power that whats needed to heat flesh enough to cause damage you literally get more heat directly from the phone being warm than RF absorption.
I don't propose we stop looking for any possible biological activity due to microwave (or any other spectrum) but repeated test have not shown this to be the case and to do so would mean there is some new mechanism for this to do so.
If you are scared of 300 milliwatt RF emissions I would be more scared of multi-watt LED light emissions due to higher energy levels (terahertz vs gigahertz).