http://www.acousticprophecy.com/how-does-a-metal-rod-make-a-high-pitched-sound Bible prophecy and prophetic music Mon, 06 Feb 2012 05:50:15 -0700 http://wordpress.org/?v=2.8.5 hourly 1 http://www.acousticprophecy.com/how-does-a-metal-rod-make-a-high-pitched-sound/comment-page-1#comment-10184 Miles Thu, 11 Feb 2010 03:35:26 +0000 http://www.acousticprophecy.com/how-does-a-metal-rod-make-a-high-pitched-sound#comment-10184 The friction caused the rod to vibrate, and vibrations are what create sound waves. The size, shape, and material that the object is made of all have an effect on how far apart the sound wave's are. Deeper sounds are made by sound wave's spaced further apart, and higher sounds are made by sound wave's spaced closer together. The friction caused the rod to vibrate, and vibrations are what create sound waves. The size, shape, and material that the object is made of all have an effect on how far apart the sound wave’s are. Deeper sounds are made by sound wave’s spaced further apart, and higher sounds are made by sound wave’s spaced closer together.

]]> http://www.acousticprophecy.com/how-does-a-metal-rod-make-a-high-pitched-sound/comment-page-1#comment-10183 charles s Thu, 11 Feb 2010 01:46:30 +0000 http://www.acousticprophecy.com/how-does-a-metal-rod-make-a-high-pitched-sound#comment-10183 The deeper concept is that the teacher's hand is not sliding smoothly but is starting and stopping repeatedly. At first the hand doesn't slide due to the friction between his hand and the rod. Then with additional force the hand breaks free. But the hand doesn't immediately start to move and becomes stuck briefly then sticks again and so forth. What then is happening is that there is a resonate frequency to the rod, depending upon things like its length and mass. So with all this starting and stopping, when that happens in a time frame that matches the resonate frequency of the rod, you will hear that fundamental tone. And the vibration in the rod tends to cause the hand to start and stop in accord with the frequency of vibration of the rod. Remember, the sound you hear is the rod vibrating at its resonant frequency. The deeper concept is that the teacher’s hand is not sliding smoothly but is starting and stopping repeatedly. At first the hand doesn’t slide due to the friction between his hand and the rod. Then with additional force the hand breaks free. But the hand doesn’t immediately start to move and becomes stuck briefly then sticks again and so forth. What then is happening is that there is a resonate frequency to the rod, depending upon things like its length and mass. So with all this starting and stopping, when that happens in a time frame that matches the resonate frequency of the rod, you will hear that fundamental tone. And the vibration in the rod tends to cause the hand to start and stop in accord with the frequency of vibration of the rod. Remember, the sound you hear is the rod vibrating at its resonant frequency.

]]>