RF (radio frequency) can (and does) travel through water at a "very low frequency". The Navy uses VLF to communicate with submarines, but it's not very effecient. The messages sent to subs via VLF are usually "Come to periscope depth to receive a message".Originally posted by legac@Jun 5 2005, 06:35 AM
would you mean underwater telecommunication?
I have learned that electromagnetic waves can be transferred underwater with very low frequency and it needs a very big frame of " antenna" to capture. I am not sure whether it is right or wrong.
Originally posted by lionking@Jun 1 2005, 09:35 AM
Would an AC signal in water be the same as a signal in a wire?
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