• Question: How does a telephone work ?

    Asked by Achsu to Will, Silvia, Kieran, Isaac, Betty on 17 Nov 2016.
    • Photo: William Avison

      William Avison answered on 17 Nov 2016:

      Telephones convert your voice, an analogue signal, into a digital signal. This digital signal is then sent over phone lines, until it gets to the other end, where the signal is then turned back into an analogue signal, which drives the speaker. This is a 2 way process, that allows you to have a conversation with someone.

Comments