Pendulum Waves

Fifteen uncoupled simple pendulums of monotonically increasing lengths dance together to produce visual traveling waves, standing waves, beating, and (seemingly) random motion.

(via Clusterflock)

Comments

13 Comments so far. Leave a comment below.
  1. Joseph N. Welch,

    I have a sudden urge for a game of Centipede.

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  2. Ben,

    For extra fun, re-watch this video while listening to this in the background, like 5 minutes in:

    http://www.archive.org/details/top.09

    I guarantee you it will be awesome.

    Like or Dislike: Thumb up 3 Thumb down 0

  3. Venture Free,

    You can actually watch the bifurcation leading into and out of chaos. It’s fun to try and mark the moments when one undulating line becomes two, when two lines become four, and so on.

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  4. Stephen,

    This actually made my day

    Like or Dislike: Thumb up 1 Thumb down 0

  5. MarvinTPA,

    I used to do this with the X and Y inputs on my oscilloscope, different sort of display, but same underlying patterns. Fascinating.

    Like or Dislike: Thumb up 1 Thumb down 0

  6. outeast,

    Well, just made one with my (preschool-aged) kids – and a broomhandle braced across 2 chairs, tape, cotton, and 15 Christmas-tree baubles. Wasn’t quite as flawless, but a great little sciencey project nonetheless! So cheers for posting this video, Chris:)

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  7. TDavis,

    At one point the pattern was rather eerily similar to the DNA helix.

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  8. Michelle,

    Can’t watch too long, may give me a seizure!

    Like or Dislike: Thumb up 0 Thumb down 0

  9. Rob-Ert,

    i want to make one. where can i get the plans?

    Like or Dislike: Thumb up 0 Thumb down 0


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