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From: "Bob (not my real pseudonym)" <invalid@invalid.invalid>
Newsgroups: alt.binaries.pictures.aviation
Subject: Re: How An Optical Illusion Makes This Helicopter Look Like It's Floating - camera shutter speed matches helicopter`s rotor-yr3ngmRuGUc_xvid.avi (01/11)
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Date: Tue, 07 Mar 2017 02:19:47 -0800
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Obviously using anti-gravity technology taken from the Roswell
Grays... =}
On 6 Mar 2017 07:13:59 -0800, Miloch <Miloch_member@newsguy.com>
wrote:
>http://jalopnik.com/seemingly-floating-helicopters-are-just-my-favorite-1792955477
>
>
>shutter speed just happen to match up perfectly, causing this delightful effect:
>
>"No matter how fast it can shoot, a camera can only capture video one image at a
>blade rotation speed and the camera shutter speed match up perfectly and every
>single frame catches the blade in the same place.
>
>This is the same phenomenon that makes rotating wheels seem like they are moving
>slower than they really are and LED lights seem like they are blinking on video.
>
>faster rate than our eyes can detect. Camera refresh rates can pick it up,
>though.
>
>Science!
>
>
>
>
>*
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