To: electronics_101@...

Sent: Sunday, October 28, 2001 4:27 PM

Subject: [Electronics_101] Fw: communication concepts ??

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hello, could anyone explain me the following ?? 1. how do the waves actually travel through air ? ( for eg. waves in a radio receiver )

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Sound waves cannot travel thru a vacumn. But I think light waves could, How is this done, could members tell us.

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?2. why dont these waves mix up ? how is it that same waves are received after tuning the receiver ??

Different waves have different frequencies, thats why they dont mix up. We are able to receive because the receiver is tuned to that particular frequency.

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