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There are many physical phenomena that can be modelled by sine waves:<br> <br> <br> <br> Waves in water are an obvious example,<br> <br> <br> <br> Compression and rarefaction in the propagation of sound,<br> <br> <br> <br> Transmission of all electromagnetic radiation,<br> <br> <br> <br> Vibrations of strings in Musical Instruments,<br> <br> <br> <br> Bodies "bouncing" on a spring.<br> <br> <br> <br> Also, more complicated motion can be modelled by a superposition of many sine waves <br> <br> (using Fourier transforms). This enables complex motions to be studied more <br> <br> easily.<br> <br> <br> <br> My web page; คําอาลัยพวงหรีด <br> <br> - http://It-Viking.ch/index.php/User:LillyStillman6