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Author Topic: Optical illusion  (Read 2087 times)

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Offline casper

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Optical illusion
« on: January 23, 2009, 09:57:55 PM »
One of the oddest videos I have ever seen.

[youtube]http://uk.youtube.com/watch?v=_Isi2cwJsp4[/youtube]
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Offline Dave

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Re: Optical illusion
« Reply #1 on: January 23, 2009, 10:55:45 PM »
Yea that is quite odd looking. Taken by a mobile phone presumeably? Video cameras always have some effect on how the prop looks, but iIve never seen the rotor look stationary for so long!
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vortex003

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Re: Optical illusion
« Reply #2 on: January 24, 2009, 07:06:14 AM »
Seen that a before.I think someone said the frame rate of the video camera is almost equal to the rotor RPM - hence the illusion.
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Offline String

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Re: Optical illusion
« Reply #3 on: January 26, 2009, 01:48:06 PM »
definitely a strange effect. :o :o :o
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