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Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!tut.cis.ohio-state.edu!ucbvax!agate!violet.berkeley.edu!pete
From: pete@violet.berkeley.edu (Pete Goodeve)
Newsgroups: comp.graphics,rec.arts.tv
Subject: Re: How to view Superbowl 3-D
Summary: right phenomenon, wrong credits
Keywords: TV 3-D graphic
Message-ID: <19959@agate.BERKELEY.EDU>
Date: 5 Feb 89 10:50:56 GMT
References: <249@ai.etl.army.mil> <8901301528.AA29630@donnacona.dgp.toronto.edu>
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Organization: University of California, Berkeley
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In article <249@ai.etl.army.mil> mike@ai.etl.army.mil (Mike McDonnell) writes:

< The effect used to do the 3D for the Superbowl is called the "Purkinje
< phenomenon" and has been known for a long, long time.  [...]

and in <8901301528.AA29630@donnacona.dgp.toronto.edu>
 alain@dgp.toronto.edu (Alain Fournier) writes:

< indeed suspect the Purkinje effect has something to do with this.

Interesting...  And I thought *I* was the only one who keeps mixing up
those two names...!  Actually -- as was pointed out by a couple of other
people -- it is a guy named "Pulfrich" that we have to blame for what was
inflicted on us.  As was also correctly pointed out by someone, the
"Purkinje Shift" is the change in *spectral* response as the eye switches
to using rods instead of cones.  Ah well.. it's these damn furriners'
fault for having such awkward names... (:-)) (:-)) (:-))

I guess the whole subject has been pretty well worked out by now, anyway,
except that Pepsi have decided to get a bit of mileage out of it.
Have other people seen that commercial?  I nearly fell out of my chair
the first time I saw it, and I'm still liable to get fits of giggling
at odd moments...  [and *I* never touch anything but Coke Classic...]

                                                -- Pete --