h a l f b a k e r yYeah, I wish it made more sense too.
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Depending on the angle at which you
look at a set
of
venetian blinds, there is a variation in
the
width of the gap/lath angle. Op Art
Venetians
take advantage of this simple
phenomena.
The Op Art idea consists of two sets of
blinds
with narrower, closer spaced laths,
placed
one directly in front of the other. Each is
of
the same drop length, but one set has a
lath
less. This means that an infinite number
of
subtle patterns can be created by varying
the
pitch of the two blinds.
Moire fringes
http://en.wikipedia.../Moir%C3%A9_pattern
Both useful and aesthetically pleasing. [8th of 7, Dec 03 2007]
[link]
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+ and a couple of sexy Venetians to open and close the blinds for me! |
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If you add the capability to tilt one set with respect to the other, you can have Moire fringes .... |
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Now you get the picture... though I
wasn't certain that this would create
real moirés so I didn't use that term. |
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Can you "create" moiré fringes or are they merely an artefact of observation ... ? |
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with thick acrylic n reflective coating you
could make periscopes |
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