What science discovery was the main thing that made a telephone work? Why?

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What science discovery was the main thing that made a telephone work? Why?

2007-12-02 07:05:22 · 3 answers · asked by Gail Therese C 2 in Science & Mathematics ➔ Astronomy & Space

3 answers

magnetic induction
so a moving object (in the microphone, moved by the vibrations in the air (sound)(caused by talking)) creates a current, which travels through the wires and can them move another object (speaker) by the same principle. allowing someone to converse with someone else a long way away without shouting!

http://en.wikipedia.org/wiki/Electromagnetic_induction

it also led to the national grid, which allowed the mass use of telephones

2007-12-02 07:19:30 · answer #1 · answered by Anonymous · 0⤊ 0⤋

Hi. Electricity.

2007-12-02 07:10:56 · answer #2 · answered by Cirric 7 · 0⤊ 0⤋

The invention of the microphone.

2007-12-02 07:46:23 · answer #3 · answered by johnandeileen2000 7 · 0⤊ 0⤋