Elecro-magnetic waves

[Segilla]

Why is it that these *magnetic* waves don't interfere with each other simply because they are on different frequencies?

[BadlyHungBoy]

Hi Segilla - from what I remember of my physics lessons, electromagnetic waves on different frequencies won't interfere with each other precisely because they have different frequencies. Harmonics can cause a problem which is why pirate radio stations are such a pain.

The "magnetic" bit does not mean that they interact like magnets - try this

http://www.purchon.com/physics/electromagnetic.htm

I found it on Google

[pagey]

Principle of superposition (or superimposition). The waves are all mixed up and effectively added together. By using fourier transforms you can seperate them again. And then there's polarisation...