Fuck Yeah Fluid Dynamics

Celebrating the physics of all that flows. Ask a question, submit a post idea or send an email. You can also follow FYFD on Twitter and Google+. FYFD is written by Nicole Sharp, PhD.

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We saw previously how vibrating a falling stream of water and filming it with a matching camera frame rate appears to “freeze” the falling liquid. This video shows the same illusion, now with a 24 Hz sine wave, which the falling water mimics. Vibrating the speaker that drives the water stream slightly slower or slightly faster than the camera frame rate makes the water appear to slowly fall or rise relative to its “frozen” wave state. This is a beat effect caused by the slight difference in frequency between the water and the camera.  (Video credit: brusspup; via BoingBoing; submitted by many readers)

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    GOIL!
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  21. jennbern reblogged this from fuckyeahfluiddynamics and added:
    Love this
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  24. yaprozrel reblogged this from fuckyeahfluiddynamics and added:
    Видел недавно гифку, сделанную из отрывка этого видеоролика. А теперь мне наконец-то попалось и полное видео...
  25. higherandhigher420 reblogged this from fuckyeahfluiddynamics and added:
    Woah.
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