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Anonymous Poster

Current Through Air

03/11/2010 3:59 AM

why we cannot use the air medium to transmit current?????????????????????

but we can sent signals with different amplitude and frequencies????????????????

is there any possiblity to transmit current through the air medium??????????????//

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#1

Re: current using air medium

03/11/2010 4:22 AM
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#2

Re: current using air medium

03/11/2010 5:05 AM

Air is an insulator. If it weren't, then no electrical circuit exposed to it would work.

Dry air has a breakdown voltage of around 30kV/cm, above which sparks will jump the gap.

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#3

Re: current using air medium

03/11/2010 6:04 AM

Just try to imagine what would happen if our atmospheric air was a electric conductor.

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#4

Re: current using air medium

03/11/2010 10:08 AM

Try this experiment:

  1. Stand on the top of a tall hill or building during an electrical storm.
  2. Hold onto a tall, sharp pointed metal rod.
  3. Observe what happens when lightning strikes the rod (oops).

Now, aren't you glad air doesn't conduct electricity?

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#5

Re: current using air medium

03/11/2010 3:52 PM

you need to look at how radio wave propagate

http://www.wisegeek.com/what-are-radio-waves.htm

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#6

Re: Current Through Air

03/11/2010 11:27 PM

But air IS a medium through which electricity is conducted. Do a search on the term "dielectric" and learn what it means with relation to air. Lightning is the result of a breakdown in the dielectric properties of air in the presence of extreme potential.

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#7

Re: Current Through Air

03/12/2010 12:26 AM

The Answer is YES indeed.

In as early as 1891, Nicolas Tesla has successfully demonstrated the transmission of electrical energy without cables. An electrical conduction energy using space and matter. Wireless transmission and was named "The Tesla Effect" in honor of Nicolas Tesla.

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