[ale] OT: Optical Illusion.

[Watson, Keith]

> -----Original Message-----
> From: ale-bounces at ale.org [mailto:ale-bounces at ale.org] On Behalf Of Byron
> Jeff
> Sent: Friday, September 16, 2011 09:43
> To: Atlanta Linux Enthusiasts
> Subject: Re: [ale] OT: Optical Illusion.
> 
> On Thu, Sep 15, 2011 at 11:55:04PM -0400, David Tomaschik wrote:
> > On 09/15/2011 11:46 PM, Michael H. Warfield wrote:
> > > Someone at the meeting tonight asked me to post the URL to the colored
> > > spiral optical illusion I had with me.  Here it is:
> > >
> > > http://topcultured.com/an-illusion-so-impossible-i-had-to-double-
> check-in-photoshop/
> > >
> > > The blue and the green strips in the image are actually the exact same
> > > color.  June wouldn't believe it so I used gimp to create two squares
> on
> > > a white background in another image and used the dropper tool to fill
> a
> > > square from the blue and a square from the green (hint - start with
> the
> > > blue) and they were both identical.  It's even more astonishing
> printed
> > > on paper where the contrast is higher and the blue seems darker.
> > >
> > > Mike
> > >
> > That link is broken.  "Sorry for the delay but TopCultured is getting a
> > much needed overhaul. Come back soon!"
> 
> Google. cache:
> 
> http://webcache.googleusercontent.com/search?q=cache:rOHE3VxIbuoJ:topcultu
> red.com/an-illusion-so-impossible-i-had-to-double-check-in-photoshop/+an-
> illusion-so-impossible-i-had-to-double-check-in-
> photoshop/&cd=1&hl=en&ct=clnk&gl=us
> 
> >
> > --
> > David Tomaschik, RHCE, LPIC-1
> > System Administrator/Open Source Advocate
> > OpenPGP: 0x5DEA789B
> > http://systemoverlord.com
> > david at systemoverlord.com
> >
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> 
> --
> Byron A. Jeff
> Department Chair: IT/CS/CNET
> College of Information and Mathematical Sciences
> Clayton State University
> http://cims.clayton.edu/bjeff


Or go here, which shows what the base color of the spiral is.

http://www.techi.com/2011/09/sick-illusion/


Wow that is so cool. Great brain hack.


keith


--

Keith R. Watson                        Georgia Institute of Technology
IT Support professional Lead           College of Computing
keith.watson at cc.gatech.edu             801 Atlantic Drive NW
(404) 385-7401                         Atlanta, GA 30332-0280