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<u><strong>There are many physical phenomena that can be modelled by sine waves:</strong></u><br> <br> <br> <br> <u><strong>Waves in water are an obvious example,</strong></u><br> <br> <br> <br> <u><b>Compression and rarefaction in the propagation of sound,</b></u><br> <br> <br> <br> <b><u>Transmission of all electromagnetic radiation,</u></b><br> <br> <br> <br> <i><u>Vibrations of strings in Musical Instruments,</u></i><br> <br> <br> <br> <u><strong>Bodies "bouncing" on a spring.</strong></u><br> <br> <br> <br> Also, more complicated motion can be modelled by a superposition of many sine waves (using Fourier transforms).<br> <br> This enables complex motions to be studied more easily.<br> <br> <br> <br> <br> <br> Feel free to visit my homepage <a href="http://www.cybersanso.com/bbs/board.php?bo_table=free&wr_id=435380">แพ็คเกจ วัดบางเตย</a>