This is kookie . In the two - bit picture below , YouTube userBrusspupshows us how a carefully tuned utterer , a tubing spitting water , and a photographic camera can make an impressive optical fancy – the illusion that H2O flows out of a apparently unmoving tube in 3D spiral shapes .
So how does this function ? It ’s actually pretty simple to mark up : the speaker unit dally a 24 Hz tone ( a very low note ) , which means 24 cycles of the speaker cone per second . A hosepipe carry piddle is attached to the front of the utterer , so it be active in time with the tone ( thus , it is waving back and forth 24 times a 2d ) . This movement have the hose to spray urine back and forth . Finally , a television camera running at 24 fps ( frame per secondly ) is taper at the hose ’s production . The result is what you see below – when we synchronize the tv camera ’s snapshots of reality and the talker ’s movement , we see what attend like an unmoving hose – the camera happen to snap a frame at mo when the thermionic valve is in the same place , so its waste apparent motion is hidden . ( Then Brusspup usher us the effect of tune the speaker system at slightly dissimilar frequencies – trippy clobber , and you may now see the tube moving . )
What we ’re really meet is a series of snapshots of water that pass to look really nifty ; the naked eye does n’t see this core because the eye is n’t a telecasting television camera ( it is not limited to a " 24 systema skeletale per 2nd " view of the world ) . This upshot is tie in to the reason thatcar wheels sometimes " go in reverse"when seen on television or film : because the frame rate of any television camera is circumscribe , the motion of an aim being filmed can interact with the photographic camera in interesting ways .
With all that mumbo - jumbo out of the way , just look at this :
If you like that , you ’ll probably digStrobe Lights & Water Drops , include a " Time Foundation " – a proficiency using a strobe light ignitor to make urine drops appear to " freeze " in mid - air .
( ViaColossal . )
