P3D Re: Pulfrich effect

[Larry Berlin <lberlin@xxxxxxxxx>]

>Date: Fri, 2 Jan 1998 
>From: boris@xxxxxxxxxxxx (Boris Starosta) writes:
>........................
>Now I realize that I have also often seen the Pulfrich effect:  Go out at
>night with binoculars, and after becoming accustomed to the dark (to
>maximize the effect), take the binoculars to observe a relatively dense
>star field.  You want to have both relatively bright and faint stars in the
>same field.  When handholding the binoculars, you will get some shake -
>what's interesting is that any bright star appears to shake much more, on
>top of a field of relatively stable fainter stars.  Thus the bright star
>appears dissociated from the firmament, which "lags behind" in its apparent
>motion.
>
>Works with either eye.  Funny, how I've been familiar with this for over
>two decades, but only just now have come to understand the mechanism behind
>it.

*****  Yes! That's it. Great examples too. Most of 3D's special stuff is
exactly like that. Right there and so familiar we seem to not notice it
until someone points it out. :-)

Larry Berlin

Email: lberlin@xxxxxxxxx
http://www.sonic.net/~lberlin/
http://3dzine.simplenet.com/


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