Inducing a signal in a wire over a short distance

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Discussion Overview

The discussion revolves around the challenge of inducing a weak signal in a wire from a distance without physical contact or modification of the wire or equipment. Participants explore the nature of the signal and the conditions under which it can be achieved, focusing on theoretical and practical aspects of signal induction.

Discussion Character

  • Exploratory
  • Technical explanation
  • Debate/contested

Main Points Raised

  • The original poster (OP) seeks methods to induce a signal in a wire across the room, emphasizing constraints on physical interaction and equipment modification.
  • Some participants inquire about the type of signal the OP intends to induce, suggesting either a baseband signal or a high-frequency signal that could fit within a baseband envelope, similar to AM radio transmission.
  • One participant requests additional details about the signal's origin, the nature of the transmitter, frequency range, the wire's connection, and the distance from the signal source to better understand the scenario.
  • Another participant humorously suggests using a walkie-talkie, noting that any radio transmission could induce minute electrical signals in nearby metallic objects.
  • There is a mention of a potential connection to a previous thread by the OP, hinting at ongoing curiosity or experimentation related to the topic.
  • A participant raises a question about the motivation behind the OP's inquiry, suggesting a possible prank or playful application of physics knowledge.

Areas of Agreement / Disagreement

The discussion does not reach a consensus, as participants express varying levels of curiosity and request for clarification without agreeing on a specific method or approach to inducing the signal.

Contextual Notes

Participants have not provided specific definitions or assumptions regarding the types of signals or the characteristics of the wire, leaving some aspects of the discussion open to interpretation.

ChromeBit
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Hello!
I want to induce a (weak) signal in a wire across the room from me.
I was just wondering, how would I go about doing this if I couldn't touch the wire and couldn't modify the equipment to accept these signals BUT was close and in line of site of the wire?
 
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What kind of signal?
 
Either a baseband signal, or a high frequency signal that fits inside the desired baseband signal (like an envelope in AM radio transmission).
 
I think you need to tell us a whole lot more about what you are trying to achieve
you info so far is just too vague

5 initial questions

1) where is the signal originating ?
2) is the signal being radiated by a purpose built transmitter ?
3) what specific freq range is this signal ?
4) what is this wire connected to?
5) how long is this wire and how far from the signal source ?

cheers
Dave
 
6) And why are you wanting to do this?
 
ChromeBit said:
Hello!
I want to induce a (weak) signal in a wire across the room from me.
I was just wondering, how would I go about doing this if I couldn't touch the wire and couldn't modify the equipment to accept these signals BUT was close and in line of site of the wire?
If I take your question literally, then the answer is "Use a walkie-talkie". Any radio transmission will cause minute electrical signals in local metallic objects.

If you want more information, your going to have to be more specific. For example, what is that "wire across the room" attached to? How are you going to determine that there is a signal on it?
 
ChromeBit said:
Hello!
I want to induce a (weak) signal in a wire across the room from me.
I was just wondering, how would I go about doing this if I couldn't touch the wire and couldn't modify the equipment to accept these signals BUT was close and in line of site of the wire?

I wonder if the OP's question is related to his thread from a month ago...

ChromeBit said:
I'm not sure if I'm going to get any answers here, but I was just wondering... have any of you ever used your physics (or engineering/electrical) knowledge to play some kind of prank on someone?
 

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