pretty cool science trick
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<div class="fb-post" data-href="https://www.facebook.com/photo.php?v=805329629490060" data-width="466"><div class="fb-xfbml-parse-ignore"><a href="https://www.facebook.com/photo.php?v=805329629490060">Post</a> by <a href="https://www.facebook.com/thesiakapkeli">Siakap Keli</a>.</div></div> |
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In the Middle Ages, this would get you burnt at the stake.
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<iframe width="560" height="315" src="//www.youtube.com/embed/_-agl0pOQfs" frameborder="0" allowfullscreen></iframe>
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That thing looks like a Darwin Award machine. :hmmm:
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The water is waving around back and forth 24 times per second along with the 24 Hz sound wave, so to the human eye it would just look like it's diffusing randomly. By recording the water 24 times per second, though, you really only see the water in the same position during each of its "waves", so to the camera it looks like it's holding still in mid-air.
Leave it to Twitter and that stupid "I ****ing love science" Facebook group to strip science down to "OMG THIS LOOKS KEWL <3 IM SUCH A NERD LOL". |
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Then I read it a third time, and now my brain hurts, and I'm scared of you. |
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The same thing applies to the water here, except that instead of waving once every three seconds, it's doing it 24 times every 1 second. The camera is the person "taking pictures", except that it's also doing it 24 times per second (since that's the speed it records at). Does that make sense? |
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That's nothing one time I took acid and I saw sound waves.
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