Re: The problem with Pulfrich

[P3D Larry Berlin <lberlin@xxxxxxxxx>]

>Gregory J. Wageman asks:
>>That does in fact result in a definite Pulfrich effect if you are
>>wearing the sunglass lens over the appropriate eye.
>
>Which is the appropriate eye?  Leading or trailing?  My guess is you'd
>want to delay the signal to the trailing eye...
>

That depends on what is moving and whether it should be in front or in back.
If the subject is moving relative to the background and you want the subject
in front, place the lens over the leading eye. If the background is in
motion, you need the lens over the trailing eye so that it will appear in back. 

Try it at your computer with the mouse pointer. Slowly and smoothly run it
back and forth on the screen while covering one eye with the sunglass lens.
The pointer will alternate between appearing slightly in front of the screen
or behind it.

Larry Berlin

Email: lberlin@xxxxxxxxx
http://www.sonic.net/~lberlin/


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