Propagating Electromagnetic Waves in Liquids

Both are right.

its not electromagnetic dont absolutely propagate in the water, it has only a short distance propagation. thats why submarine cant communicate with radio but by sonic wave touch each other. or very long radio wave.

I would be very grateful if you could send me some webpages or some reference where I could learn something more of this.

ClearWater Technolgies @ Florida company.

Electromagnetic Waves travel with the E and H fields transversely.

If either component attenuates more-the whole dies fast.

Sea water will attenuate all the E field in a few wavelengths. Clear icemelting lake sweet water will not-for Kms.

Actually Light also dies down fast in sea water. Someone in CR4 will explain lucidly on the faint glow of light with huge attenuation arriving bottom of clear sea.

Hi,Guest,

to my great embarrassing, I dont know the special web site about it, but you can search from google etc. its not a difficult things.

If you go to liberay, yoiu can read a book on hydroacoustic and electromagnetic propagonda in air and water (liquid) etc. you will know its principle and know why people will set up large power very long wave radio station for communication and how sonar works. and its work frequency band for different sea area and deepth.

Im sorry I forget all of their content, so I can ohly give you some suggestion and direction. hope this helpful

They were most likely referring to radio frequency electromagnetic radiation. Light is also electromagnetic radiation but millions of times higher in frequency. Any kind of matter absorbs differently at different frequencies.

The other posts are correct. The propagation of electromagnetic waves in water (or any other medium) is highly dependent on wavelength.

That post on wikipedia should be updated. Many frequencies, such as those used for GPS, are very highly attenuated by water, and effectively do not propagate. However, it should be noted that it is primarily a matter of attenuation of E fields, not fluids stopping propagation. H fields are also attenuated, but less than E - compasses work fairly well underwater, and are commonly used on submarines, both manned and autonomous (I've built a few).

Visible light propagates better than some wavelengths and worse than others. Green generally propagates the farthest of visible light. For that reason, green lasers are used for precision measurement of small distances in some underwater applications where an alternative to sonar (easily detectable by other people) is desired.

Search for 'propagation of electromagnetic waves/light/radio/RF/etc. in water', or 'attenuation in water' or something along those lines, or look at a decent college physics book and you should find some good references and details.

Wickipedia is partially correct. Light propagates through liquid but with high attenuation and same with EM waves (for short waves). But the form of EM waves i.e. acoustic burst can travel with less attenuation through liquids therefore in SONAR/Echo Sounder audio frequencies (VLF-Very Low Freq, 20 Hz to 300 KHz) are used through Transducers and communication/utility achieved