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Fifteen uncoupled simple pendulums of monotonically increasing lengths

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Fire Walk With Me Donating Member (1000+ posts) Send PM | Profile | Ignore Fri Jul-22-11 01:30 PM
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Fifteen uncoupled simple pendulums of monotonically increasing lengths
dance together to produce visual traveling waves, standing waves, beating, and (seemingly) random motion.

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.



http://www.youtube.com/watch?v=yVkdfJ9PkRQ&feature=share
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ret5hd Donating Member (1000+ posts) Send PM | Profile | Ignore Fri Jul-22-11 01:36 PM
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1. replying so i can find this later
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MineralMan Donating Member (1000+ posts) Send PM | Profile | Ignore Fri Jul-22-11 01:38 PM
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2. That is simply too cool! I believe I must build one of those to
put on the coffee table in front of the couch. Had the original maker of the "executive pendulum" thing thought of this, there would be one everywhere.

Marvelous, and thanks!
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lob1 Donating Member (1000+ posts) Send PM | Profile | Ignore Fri Jul-22-11 01:40 PM
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3. Really neat. K&R.
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abelenkpe Donating Member (1000+ posts) Send PM | Profile | Ignore Fri Jul-22-11 02:22 PM
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4. Cool! Nt
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NV Whino Donating Member (1000+ posts) Send PM | Profile | Ignore Fri Jul-22-11 02:25 PM
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5. Very cool!
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snot Donating Member (1000+ posts) Send PM | Profile | Ignore Fri Jul-22-11 02:30 PM
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6. Awesome!
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VWolf Donating Member (1000+ posts) Send PM | Profile | Ignore Fri Jul-22-11 03:00 PM
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7. Looks like #2 and #10 are slightly off
but that's nitpicking.
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Jim__ Donating Member (1000+ posts) Send PM | Profile | Ignore Fri Jul-22-11 03:05 PM
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8. Wow! - n/t
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laconicsax Donating Member (1000+ posts) Send PM | Profile | Ignore Fri Jul-22-11 03:44 PM
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9. Cool! Thanks for sharing. n/t
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trusty elf Donating Member (1000+ posts) Send PM | Profile | Ignore Fri Jul-22-11 04:26 PM
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10. Elegant!
Thanks.
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