2007-09-30 18:55:02 · 8 answers · asked by tomas redlow 1 in Science & Mathematics ➔ Alternative ➔ Other - Alternative
what type of wireless signal could be transmitted and sent through, dirt, rock, concrete, water and long distances and carry audio and video data
2007-09-30 18:57:04 · update #1
Well it could be electrical if the water is present, but not for long distances. But the most common it would be the (infra or ultra)sound. That would work well even for few hundred yards depending on the frequency. On some point you should put the emitter of modulated sound form and on the other the receiver tuned for the same wave form. A decoder should do the transformation from digital to audio/video.
Never heard to be tested, but hope to work ;)
Good luck
Dfriend
2007-09-30 19:41:50 · answer #1 · answered by Dfriend 3 · 0⤊ 0⤋
Yes, it can be done electrically like a radio signal set for 76 Hz- its how the US Navy contacts submarines.
2007-10-03 02:45:45 · answer #2 · answered by Anonymous · 0⤊ 0⤋
electromagnetic waves/ radio waves/ ground penetrating radar/
sonar.
I have no idea what the guy above is talking about. Ultra sound is hands on , not long distance.
2007-10-01 07:04:36 · answer #3 · answered by Father Ted 5 · 2⤊ 0⤋
ULF (Ultra low frequency) signals. It's what elephants use to communicate over long distances.
2007-10-02 01:12:17 · answer #4 · answered by kcpaull 5 · 0⤊ 0⤋
A wet, dirty signal.
A blue laser does well under murkey watery conditions.
Also, sonar signals.
And electrical impulses can go a limited distance.
2007-10-01 18:58:37 · answer #5 · answered by Warren W- a Mormon engineer 6 · 0⤊ 0⤋
It hasn't been discovered yet, but how about a gravity wave signal.
2007-10-03 00:02:32 · answer #6 · answered by paul 7 · 0⤊ 0⤋
i want to add to check in here;
http://www.cisco.com/univercd/cc/td/doc/cisintwk/ito_doc/wireless.htm
2007-10-03 01:21:26 · answer #7 · answered by kokopelli 6 · 0⤊ 0⤋
sound waves
2007-10-01 21:11:14 · answer #8 · answered by netta 2 · 0⤊ 0⤋