Andy,
When I am wearing my "drivers' glasses", a pair of glasses I wear
during the day that has lenses made by, I think, the transitions
people, my cell phone display and the display on my mobile ham rig and
the displays at ATMs and gas pumps are difficult to read.
You may find info here http://www.lcd.kent.edu/ since Kent State
University is reported to be a leader in LCD research and applications.
Bob
ADavidhazy wrote:
Recently I
shared this suggestion that glare light could be used as a
large area source if one could not find or afford or otherwise procure
a large sheet of polarizing material to cover a light box with.
A student in my class mentioned that he saw strange effects when
looking
at his cell phone's display. An LCD display.
After some discussion and looking into the situation it became apparent
that one could use the LCD screen of a laptop or of separate display
device
as a pretty uniform and efficient background source for doing what some
call
"stress analysis" imaging or photography.
Have you all heard/read about such application being described
somewhere?
The LCD screen would be forced to a uniform white tone and a regular
polarizer fitted to the camera lens. Rotating the polarizer causes the
LCD
screen to go from light tone to dark one. Placing a plastic or even
some
glass object between the two will allow for the colorful (sometimes)
visualization of stress patterns within the subject (if it has not been
carefully annealed).
I just did a quick test and am thinking that there are even additional
hidden
applications for this "system" ... right now I am trying to simply find
out if
this use of your laptop's LCD screen is something already widely known.
Feedback?
andy
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( O O )
--------------------oOOO-----O----OOOo-----73 de w8imo@xxxxxxxx------
I plan to live forever. So far, so good......
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