Time Fountain - Optical Illusion



Uploaded by: shengd
Video Description:
This device creates the illusion that a simple stream of water droplets can defy the known laws of physics. By controlling a set of flickering LEDs, the dripping water can appear to slow down, freeze in mid-air, and even reverse in direction.
This illusion exists because the brain attempts to fill in the gaps between flashes with its anticipated motion. It is the same reason that your brain interprets the 24 frames/second of a movie to be in-motion, rather than recognizing the individual still frames .
The credit for this device belongs to Nate True. You can learn how to build your own Time Fountain at: http://cre.ations.net/creation/the-time-fountain


Tags for this video: fountain illusion optical opticalillusion time

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Comments for this video on YouTube
ok that is sick ( 2 months ago by dexty13)
ok that is sick
WOw! Amazing! =0 ( 2 months ago by oneofusall)
WOw! Amazing! =0
Yeah, you also need ... ( 2 months ago by brakspbfun)
Yeah, you also need a black light, and high lighter flued..
I could be wrong, ... ( 1 month ago by CaraSohma)
I could be wrong, but I believe that there's a steady stream of water and there are lights behind it making it look like there are only a few drops and that they're glowing. When the water flows "backwards", and "stops" it's actually only the lights changing. Because it's dark in the room you can't see they constent stream of water, but if you watch from :59 to 1:11 it's easier to see.
yeah i think your ... ( 1 month ago by thecanadian1313)
yeah i think your right
although this trick is about 5 times easeir with just drops
wassup remember ... ( 1 month ago by bikerboyjosh)
wassup remember this webpage? (meetyourfling) c o m
juscesak
970634037
wow, that's crazy. ... ( 1 month ago by carlichan21)
wow, that's crazy. :O
Array ( 1 month ago by sairfaxroolz813)
0_o
W0W.
where can i buy one?!
i agree. ( 1 month ago by KitsuneNoOMeiri)
i agree.
if anyone want s ... ( 1 month ago by luka1226)
if anyone want s one of these i can make you one, get in contact.
OMG that's so cool! ... ( 1 month ago by sita1jean)
OMG that's so cool! I want one of these! Definitely a crowd pleasure at house parties.
omfg i could play ... ( 1 month ago by Loveingwowtothemax)
omfg i could play with this for so long
that was great! ( 1 month ago by akonamanliwat)
that was great!
Um, isn't this ... ( 1 month ago by atican)
Um, isn't this obvious? And you're actually wrong anyway. There's only one drop at any given moment when the light is flickering. The light turns on at the moment when each drop hits the same location. The stream of drops is very fast, so it looks like one drop suspended in mid air. The light can be timed slightly off so that 'time' can move in slow motion or backwards.
It isn't obvious to ... ( 1 month ago by CaraSohma)
It isn't obvious to everyone, someone asked me about it. And it says in the description,
"...creates the illusion that a simple stream of water droplets..." emphasis on "stream". And it certainly looks like a stream at 1:15. I could be wrong about my interpretation, but I don't think so.
Well, first off, a ... ( 1 month ago by atican)
Well, first off, a 'stream' is different from a 'stream of water droplets.' A stream is one continuous flow of water. A stream of droplets is just one drop following another. There *is* a stream of water droplets, but the light illuminates only one drop at a time. At the moment it's illuminated, there is only one drop present. Otherwise, we'd see all the drops as they come down. We don't perceive fast enough to notice it.
Looking at this ... ( 1 month ago by atican)
Looking at this again, I was focusing on when there was a close-up of one drop. That might be where the confusion is. There are actually several drops illuminated at once. It's like a series of pictures being taken of different drops hitting the same locations at different moments. By syncopating the lights correctly, it looks like drops are suspended in mid-air.
I should have used ... ( 1 month ago by CaraSohma)
I should have used better wording. It would have to be a "stream of droplets" and not a "steady stream". You win. Nice talking with you ;)
can the drops be ... ( 1 month ago by Mattyew)
can the drops be interacted with in fake time?
Ahh, I see exactly ... ( 1 month ago by scarredseraph23)
Ahh, I see exactly what you mean. Good analysis. I was curious about how that worked.
:))))))))) ( 3 weeks ago by ciucinciu)
:)))))))))
donde se compra eso? ( 3 weeks ago by joaquing93)
donde se compra eso?
I must have one of ... ( 1 week ago by Intoxicantt)
I must have one of these
witchcraft! ( 2 days ago by seriouslyWeird)
witchcraft!



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