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Looper's Delight
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Stunning!
Gareth, Sentientfx - Innovative music plugins. http://sentientfx.com/ > Date: Wed, 28 Sep 2011 15:17:06 -0700 > From: looppool@cruzio.com > To: Loopers-Delight@loopers-delight.com > Subject: Pendulum LOOP > > Beautiful visual loop showing visual pattern consonance and dissonance > > > TinyURL.com/pendulumLOOP > > > What it shows: Fifteen uncoupled simple pendulums of monotonically > increasing lengths dance together to produce visual traveling waves, > standing waves, beating, and random motion. One might call this kinetic > art and the choreography of the dance of the pendulums is stunning! > Aliasing and quantum revival can also be shown. > > How it works: The period of one complete cycle of the dance is 60 > seconds. The length of the longest pendulum has been adjusted so that it > executes 51 oscillations in this 60 second period. The length of each > successive shorter pendulum is carefully adjusted so that it executes > one additional oscillation in this period. Thus, the 15th pendulum > (shortest) undergoes 65 oscillations. When all 15 pendulums are started > together, they quickly fall out of sync—their relative phases > continuously change because of their different periods of oscillation. > However, after 60 seconds they will all have executed an integral number > of oscillations and be back in sync again at that instant, ready to > repeat the dance. > > Setting it up: The pendulum waves are best viewed from above or down the > length of the apparatus. Video projection is a must for a large lecture > hall audience. You can play the video below to see the apparatus in > action. One instance of interest to note is at 30 seconds (halfway > through the cycle), when half of the pendulums are at one amplitude > maximum and the other half are at the opposite amplitude maximum. > |