T3D Re: Cardboarding...

[Peter Homer <P.J.Homer@xxxxxxxxxxxxx>]

>John B writes:
>>I mean insufficient angular resolution which could be due to film/
>>lens resolution.
>And...
>Jim Crowell writes:
>>If, for
>>example, the top & bottom edges of a cylinder are visible & their
>>disparities specify that the front surface is curved, then you'll see a
>>curve in the blank region.  Your brain interpolates.
>
>Apropos of these statements, but a bit off topic; several years ago I put a
>couple of orthogonally opposed polarizers over the headlights of my car,
>they were about two feet apart (Series IIA Land Rover). I put on glasses
>having the same alignment, and looked around. The only thing I saw which
>held the polarization was a single spike in a phone pole, a long half block
>away. I could tell EXACTLY where that spike was relative to the pole, what's
>more, the pole appeared dimensionally curved at that point. It was a very
>odd sensation, having that enormous depth resolution of a small object at
>that distance. Like an itch you can't scratch, it was... weird!

 An interesting experiment given that one of the original intentions of
Land in developing polaroid was to fit it to car headlights and visors on
the windscreen
in order to reduce problems with dazzle and glare. It was decided that the
best configuration would be diagonal (Orthagonal?) with the same direction
on both of the headlamps and visor so that the visor would be crossed with
the headlamps of oncoming traffic. So the stereo effects you noticed would
not have occured presumably you had your headlamps polarised at right
angles to each other and were wearing standard stereo glasses . What was
the reason for your experiment?.
    P.J.Homer



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