How Do Radio Waves Affect Human Tissue?

AI Thread Summary
Radio waves interact with human tissue primarily through their electric field, which affects the body due to the variable permittivity of different tissues. The magnetic field of radio waves has minimal direct interaction with the body, but it can still influence the medium as the two fields are coupled. The effects of radio waves on tissue can vary significantly depending on the strength and frequency of the waves. For example, stronger magnetic fields, like those used in MRI, demonstrate notable effects on human tissue. Understanding these interactions is crucial for assessing the safety and implications of radio wave exposure.
Livethefire
Messages
49
Reaction score
0
I realize this might be a complicated question, but I can't seem to find any textbooks or papers that address this head on. Perhaps I am naive in this field.

What happens to the electric and magnetic parts of a radio wave as it passes through the human body?


As far as I understand: The electric field of a radio wave will interact with the body tissue quite strongly due to the variable permittivity of the various tissues. However, the magnetic field won't since it doesn't interact much (if at all) with the body. Since the two fields are coupled this still means the magnetic field will change in the medium.

Is this correct? Any further resources or insights into this?

I am aware the analysis of this situation will most likely change depending on field strengths and frequencies but for an average transmitted radio wave, what will happen?

Thank you.
 
Engineering news on Phys.org
Livethefire said:
... snip...

As far as I understand: The electric field of a radio wave will interact with the body tissue quite strongly due to the variable permittivity of the various tissues. However, the magnetic field won't since it doesn't interact much (if at all) with the body. Since the two fields are coupled this still means the magnetic field will change in the medium.

Is this correct? Any further resources or insights into this?

I am aware the analysis of this situation will most likely change depending on field strengths and frequencies but for an average transmitted radio wave, what will happen?

Thank you.

the magnetic field has quite an effect specially as it gets stronger. do a google search on MRI Magnetic Resonance Imaging, as used in the medical world :)

Dave
 
Thread 'Weird near-field phenomenon I get in my EM simulation'
I recently made a basic simulation of wire antennas and I am not sure if the near field in my simulation is modeled correctly. One of the things that worry me is the fact that sometimes I see in my simulation "movements" in the near field that seems to be faster than the speed of wave propagation I defined (the speed of light in the simulation). Specifically I see "nodes" of low amplitude in the E field that are quickly "emitted" from the antenna and then slow down as they approach the far...
Hello dear reader, a brief introduction: Some 4 years ago someone started developing health related issues, apparently due to exposure to RF & ELF related frequencies and/or fields (Magnetic). This is currently becoming known as EHS. (Electromagnetic hypersensitivity is a claimed sensitivity to electromagnetic fields, to which adverse symptoms are attributed.) She experiences a deep burning sensation throughout her entire body, leaving her in pain and exhausted after a pulse has occurred...
Back
Top