when a wheel spinning so fast then , if we look at that then we could notice that it is rotating in counter durection but comparatively very slowly . WHYYY??????????????
2007-02-16 20:34:21 · 8 answers · asked by Anonymous in Science & Mathematics ➔ Physics
The 1st answer is partially correct. Its all about the amount of FPS (Frames per second) that the eye can see.
Think about Television, it is actually still images played at 30 FPS - it tricks the eye into thinking it is moving; it is the same with this wheel you are talking about - but this is moving much faster, probably 100 fps, it actually moves too fast for the eye - and ends up that you do not see the image you actually should.
A fly would be quite happy with it as they see at around 200 fps - to them our TV is just a series of still images.
2007-02-16 20:45:00 · answer #1 · answered by Doctor Q 6 · 1⤊ 0⤋
actually the human eye has a refresh fee that varies from guy or woman to guy or woman. as a effect we don't see the international because it strikes continuously, yet in discrete chunks. working example: Say you're watching a wheel spinning clockwise, and say your eye sees a spoke on the twelve o'clock place, and then your imaginative and prescient refreshes whilst the spoke has traveled all a thank you to the 11 o'clock place. even however you already know the wheel is spinning clockwise, your innovations will anticipate it relatively is spinning counter-clockwise simply by fact it observed the spoke the 2nd time purely some tiers far off from the place it observed it the 1st time, as a effect it relatively is the easy assumption. the subsequent time you notice the spoke it is going to likely be in the ten o'clock place, and you will back think of it relatively is shifting backward. think of roughly it for a minute, you will get it.
2016-10-02 07:01:38 · answer #2 · answered by ? 4 · 0⤊ 0⤋
Both human vision and human brain, are the most advanced works of evolution and what you experience is not a fault or limitation of any of them.
To verify your experience, independent of a human observer, try video capture of the wheel rotation.
Careful examination of the video clip by various human observers and machine analysis would reveal an optical resonance generated due to simple light reflection and physical circumstances of surface of materials involved.
Mind you, human brain does reduce some of our vision to a pragmatic level. For example, it cuts out the red colour of blood vessels around the lense, or digitally magnifies the full moon in horizon with amazing accuracy !
2007-02-16 21:10:05 · answer #3 · answered by tekno_alan 2 · 0⤊ 0⤋
It's the speed at which the human eye can decipher information, just as if a strobe light were placed on such wheel.
2007-02-16 20:38:29 · answer #4 · answered by mohnfro 1 · 0⤊ 0⤋
light waves and the slow response of the brain to a speedy object are the factors.
light bounces off the surface of the fan, but with it's speed, it alters the light pattern and thus our eyes decipher something counter-clockwise.
2007-02-16 20:47:30 · answer #5 · answered by The Impresario 2 · 0⤊ 0⤋
Light wave is one factor.
2007-02-16 20:39:38 · answer #6 · answered by exo 7 · 0⤊ 0⤋
i don't know but a fan does it too. but if you follow the direction it should go, then it looks as if it is going the right way.............lol. weird huh?!?!?
2007-02-16 20:38:49 · answer #7 · answered by Tammy 3 · 1⤊ 0⤋
always wandered the same thing, optical illusion???
2007-02-16 20:39:51 · answer #8 · answered by Anonymous · 0⤊ 0⤋