# Wave Interference ?

Could someone explain how so many waves can travel through the same place in the medium at the same time but not interfere with each other.

eg. ADSL, optic fibre telephone, mobile phones etc?

Thanks.

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Tide
Homework Helper
Technically, the waves do interfere with each other. I think what you really mean to ask is "Why can they interfere with each other and then go merrily on their way after the interaction as though nothing had happened?"

pkc111 said:
Could someone explain how so many waves can travel through the same place in the medium at the same time but not interfere with each other.

eg. ADSL, optic fibre telephone, mobile phones etc?

Thanks.
In phase wave pulses will add in amplitude when they pass eachother. But if two out of phase wave pulses pass eachother, decontructive interference will result. That is, their amplitudes will decrease.

Tide said:
Technically, the waves do interfere with each other. I think what you really mean to ask is "Why can they interfere with each other and then go merrily on their way after the interaction as though nothing had happened?"
Sort of.

To my way of thinking every receiver is at a point in the medium where interference is occuring between hundreds of waves there.
How come the signal comes out clear?

Tide