2006-10-16 09:25:14 · 3 answers · asked by Anonymous in Science & Mathematics ➔ Other - Science
A radio receives broadcasts of sound. Although generally this is via "radio waves", the term is often also applied to other transmission methods, e.g. Internet streaming, or cable TV.
The antenna, or aerial, is the component that picks up the radio signal.
2006-10-16 09:32:07 · answer #1 · answered by kirun 6 · 0⤊ 0⤋
You transmit a carrier wave - an electro-magnetic wave of radio frequency. Super imposed on the (modulation) is audio. the Electro-magnetic waves are transmitted using an antenna and received with a antenna. The audio can be any sound - speech or music - amazing invention - you should get one. Two methods of modulation, vary the amplitude of the wave AM, or the frequency of the wave FM. We can even send digital signals now by using electro-magnetic waves. So not just music and speech but video and computer signals too.
2006-10-16 09:32:50 · answer #2 · answered by Mike10613 6 · 0⤊ 0⤋
You. Have. to. be. kidding. me. They have radios in deepest africa and mongolia now. Pull the other one.
2006-10-16 09:39:14 · answer #3 · answered by jennymilluk 2 · 0⤊ 0⤋