- #1
IssacBinary
- 93
- 0
Since a changing current creates a magnetic field, and if there's a wire near by, the magnetic field will induce a current in that wire. What is needed / what does it take to turn that magnetic field into EM radiation such as a radio wave?
Or is it purely just the frequency of the current, so once the current reaches radio frequency it will start radiating EM fields.
So does that mean everything is emitting em radiation but at very low frequencies the magnetic field is stronger than the radiation itself?
...Then it brings me on to say, if you generated a current of visible light frequencies..will light start to emit from the wire?
Or is it purely just the frequency of the current, so once the current reaches radio frequency it will start radiating EM fields.
So does that mean everything is emitting em radiation but at very low frequencies the magnetic field is stronger than the radiation itself?
...Then it brings me on to say, if you generated a current of visible light frequencies..will light start to emit from the wire?