As it happens, my colleague in the development of GlowScript, David Scherer, was intrigued by this dancing pendulums video and wrote a GlowScript program to model this motion:
http://www.glowscript.org/#/user/GlowScriptDemos/folder/Examples/program/DancingPendulums This works with browsers that support WebGL, which include current versions of Chrome, Firefox, and Safari (but with Safari you need to go to the Advanced section of Safari preferences and check "Show Develop menu in menu bar", then on the Develop menu check "Enable WebGL"). And you need a modern graphics card, that has GPUs (Graphics Processing Units). You can navigate the scene by dragging with the right button to rotate the view (or hold down the Ctrl key, then drag) or by dragging with both left and right buttons to zoom (or hold down the Alt key, then drag, or use the mouse wheel). Click on "Edit this program" to see the very short GlowScript program that produces this 3D animation. For more information: http://matterandinteractions.wordpress.com/2011/09/23/glowscript-3d-animations-in-a-browser/ Bruce On Tue, Oct 4, 2011 at 6:25 PM, Rich Murray <[email protected]> wrote: > Fwd: Pendulum physics -- 15 pendulums, longer in a line, show spurious > casuality with remarkable wave dynamics, Ernst Mach 1867, 1:45 video: > Rich Murray 2011.10.04 > > ---------- Forwarded message ---------- > From: John Garst <[email protected]> > Date: Tue, Oct 4, 2011 at 12:49 PM > Subject: Pendulum physics > To: John Garst <[email protected]> > > Just neat! > > JEG > > http://sciencedemonstrations.fas.harvard.edu/icb/icb.do?keyword=k16940&pageid=icb.page80863&pageContentId=icb.pagecontent341734&state=maximize&view=view.do&viewParam_name=indepth.html#a_icb_pagecontent341734 > > ============================================================ > FRIAM Applied Complexity Group listserv > Meets Fridays 9a-11:30 at cafe at St. John's College > lectures, archives, unsubscribe, maps at http://www.friam.org > ============================================================ FRIAM Applied Complexity Group listserv Meets Fridays 9a-11:30 at cafe at St. John's College lectures, archives, unsubscribe, maps at http://www.friam.org
