Electricity for Young Makers by Marc de Vinck
Author:Marc de Vinck
Language: eng
Format: epub, mobi
ISBN: 9781680452839
Published: 2017-02-01T05:00:00+00:00
Make a
Speaker out of Paper
M
In the last two projects we used electricity to create light. Y How about we try to make sound with electricity? Y In this project we’ll see what amazing things happen when we bring electricity and magnets together.
HOW SPEAKERS WORK
Have you ever wondered how a speaker works? It’s surprisingly simple! The two wires leading into the speaker carry a varying electrical signal to a wire coil, known as the “voice coil.” This signal causes the electrons in the coil to move and create a magnetic field that attracts and repels a magnet, moving it up and down depending on which direction and how much electrical current is flowing through the coil. This movement is transferred to the cone-shaped part of the speaker. The vibrating cone moves the air in front of it, and our ears translate that into sound.
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Electricity for Young Makers by Marc de Vinck.mobi
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