A microwave oven has produces non-ionizing radiation, would you put your hand inside one while it's on? It's non-ionizing so it should be 100% safe right?
At the power levels we're talking about (5W)? Of course I would. The effects are well known: It heats your hands up at 5 joules per second.
Incidentally, Tech Ingredients has a great video on using microwave ovens without an enclosure and how to block similar directed energy weapons that use a lot more than 5W: https://www.youtube.com/watch?v=Lg_aUOSLuRo
Its not 5W in the EU its based on 10g of mass so its at least 100 times less than that which makes it more ridiculous, mobile phones transmit at 300 milliwatts peak omnidirectionally.
They are like holding a fast blinking very dim led light and being worried about getting burned or some other undiscovered physical phenomenon from EM while staring at a monitor putting much more into your face.
Go right a head then but I know prolonged no distance (touching skin) exposure to wifi RF antenna will burn you from the inside out. It was painful but it heals fast.
What makes you say things like this that are easily verifiably false? I am reaching over and touching my WiFi router’s antennas right now and I’m not being “painfully burned from the inside out.”
I’m hoping the answer is a desire to make a joke and not something that indicates a disconnection with reality.
That’s because your WiFi router’s transmission power is limited.
RF burns are real, but generally aren’t going to happen with consumer gear designed to operate inside your house.
But climb a cell tower and get on the wrong side of a backhaul and you’ll get burned pretty quickly. You can probably get there with some routers running OpenWRT with the power cranked up (not recommending this).
(Worked on RF gear for years and have experienced high power RF output).
"But climb a cell tower and get on the wrong side of a backhaul and you’ll get burned pretty quickly"
No doubt cell towers will burn unless one has considerable skin area in contact with the metal mast. I recall being on broadcast transmitting masts where 10s of kW were being radiated and RF burns were accepted as an occupational hazard.
Keeping one's hands firmly clasped to the mast was essential to avoid burns. Nevertheless, some burns couldn't be avoided, for when clinging to the tower one's legs are often wrapped around the mast or a part of it. I recall a good pairs of jeans and overalls being ruined by the RF arcs between the mast and my knees. The pants were peppered with burn holes several mm diameter. Similarly, my knees had multiple RF burns on them.
One should wear shorts in such circumstances so one could keep in full contact with the metal surface but TX towers are often cold and windy places.
Incidentally, I once had a Seiko digital watch ruined on the tower, its LCD went totally black. Also, one can't use a digital multimeter either for the same reasons. However, with precautions we could use ancient analog multimeters so long as they used copper oxide rectifiers—as they had an upper cutoff frequency of about 10kHz. The only meters we found suitable were AVO-8s.
I can think of a few reasons why you might get different results. The plastic cover over the metal antenna might be thick enough to keep your skin away(inverse-square law). The version of WiFi has different frequencies(2.4 ghz vs 5 ghz). The Wi-Fi isn't actively transmitting at full power. Or you're simply not holding it there as long.
I'm sure we could come up with a repeatable experiment for this that doesn't have any risk of burning.
Just because touching a 1000w lightbulb will burn you does not mean a milliwatt led will. Getting burns is based heat which is based on power absorption, and phones do not put out enough power give you RF burns no matter how long you hold them against you.
"but I know prolonged no distance (touching skin) exposure to wifi RF antenna will burn you from the inside out."
Uh? I've never had that experience, any WiFi stuff I've used uses trivial levels of power.
I'd suggest you read my post on microwave radiation, also the one where I have received RF burns whilst working on transmitting towers where the radiated power was between four and five orders of magnitude higher than WiFi equipment.
Microwaves were used to heat up and reanimate frozen hamsters. You just obviously don’t do it at 1000W, unless you are planning on eating said hamsters..
But taking into account the amount of heat a gram of tissue can reasonably absorb, it doesn’t cause any biological change whatsoever.
Two separate issues are at work here. Ionizing radiation will cause damage to cells no matter the power level (however, at very low power levels such as the normal background radiation the damage is likely negligible).
Non-ionizing radiation such as microwaves produces heating effects. At low power you may perceive warming and nothing else, at high power you'll surely be burned.
Heating from microwaves can be more damaging than say heat from a stove because the longer wavelength means heating starts from one's insides and will cause considerable tissue/organ damage before one realizes what's happening.
Microwave ovens can be very dangerous if the door interlocks are bypassed and the door opened whilst it's operating. People who are seen on YouTube doing this are either ignorant of the dangers or are just plain crazy!
Microwaves, especially shorter wavelengths above 5GHz (that's about 5 times that of mobile phones) are especially damaging to the eyes as interior of the eye doesn't have a good way of dissipating heat.
I was taught never to look into waveguides even when only used with receiving equipment as even the local oscillator can have enough power to damage one's eyes if concentrated in a small area. About 1W/cm^2 has a noticeable heating effect and from about 5GHz (approx 6cm wavelength) the CSA of waveguides is small enough to concentrate EM radiation of, say, 1W to do damage to one's eyes.
For mobile phones scale that figure down as the longer wavelength dissipates the power over a greater area (also remember area goes up by the square of the wavelength which means that phone wavelengths are much less damaging than microwave frequencies (>3GHz).
I'm not up to date on the latest research but from what I was taught I'd be concerned if more than 0.1W/cm^2 were entering my eyeball. In fact, if I recall the Russian standard for exposure was 0.1W/cm^2 which was considerably tighter than the US figure of 1W/cm^2.
Keep in mind those figures were for the microwave band which starts at 3GHz. As mentioned, because of the longer wavelength of mobile phones it's unlikely one could exceed those figures whilst using a mobile.
Incidentally, Tech Ingredients has a great video on using microwave ovens without an enclosure and how to block similar directed energy weapons that use a lot more than 5W: https://www.youtube.com/watch?v=Lg_aUOSLuRo