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Sound is a wave, that is, it’s a vibration that travels through a medium, like air and water.
Sound waves cause changes in air pressure as particles bunch together and spread apart. Now, we can’t see these ripples but our ears can hear them. When the waves reach our ears, the air pressure goes up-and-down and this makes our eardrums go in-and-out at the same rate. Our brain analyses these signals and interprets them as sound.
Some of the animations in this video were sourced from the below websites. A big thank you to them.
Title: Wave phase.gif
Author: Kraaiennest
Link: commons.wikime...
License: Creative Commons Attribution-Share Alike 3.0 Unported
Title: Molecule1.gif
Author: Lookang
Link: commons.wikime...
Licence: Creative Commons Attribution-Share Alike 3.0 Unported
4 окт 2024
