To date I haven't found an inverter that didn't produce frequencies in the sub <100 kHz range.
They're meant to do that. 60 Hz < 100 kHz.
Of course there will be harmonics of 60 Hz, not a pure sine wave plus non-linearities in things.
The skin does a great job protecting the human body when the electrical field is just 60 Hertz as the impedance is 3,000 Ohms. When the frequencies rise over 2 kHz the impedance drops to 500 Ohms.
Yes, but you should calculate skin depth ... in human skin and tissue.
The US Naval Weapons Laboratory found this in 1968 by Herman Schwan and it was quoted in a book titled Electrical Stimulation and Electropathology by J. Patrick Reilly.
According to the 1999 NIEHS EMF RAPID Report just 1 mV/m of internal electric fields is associated with cancer and all sorts of other problems as it affects "cell proliferation, disruption of signal transduction pathways and inhibition of differentiation".
EM waves coming from far will be highly attenuated with depth in the body. But sufficient amplitude, what does penetrate might have some effect.
At one of the EMI labs I visited, they do 200 V/m RF, use for equipment near radar. They said one time someone opened shield room door and entered while the amplifier was on, and he experienced confusion.
"Far field" is > 2 wavelengths. For 60 Hz, that's approximately the distance from England to California. If you're closer than that to a power line, field is not propagating as an EM wave in the 377 ohms of free space. Magnetic field is free to reach right through your body and move ions, generating local current.
If your cell phone operates around 1 GHz, far field is 2' and beyond. If you hold your cell phone at arms length, penetration to the brain will be minimal. If you're going to hold it close to your ear, I recommend a first-generation iPhone because those had an E-field (voltage) antenna. That had caused problems with reception/transmission when user's hand covered antenna, so they switched to B-field (magnetic) antenna. Holding that thing against your head, the magnetic field will reach right into your brain and addle it.
Sub 100 kHz frequencies are used to open sodium and potassium ion channels in order to create nerve block. It's interesting because many complain of symptoms found in those suffering from low potassium and sodium.
Need to understand the amplitude which has this affect, and amplitude delivered.
I've seen RV parked in large parking lot at a church on the hill behind my office and they had sign on their camper that said please turn off cell phones due to EMF sensitivities....yet a quick glance at my phone shows a full 5G signal coming from a tower less than mile away.
Fields up close to cell phone could be much stronger than from a tower in the distance.
