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July 19, 2005

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john reeve

You might be interested in the polarizing filter, which would break this barrier by simply removing off-axis waves:

"21. Polarizing Filter - A filter used in photography to polarize the light entering a lens. A polarizer allows light in from one direction as opposed to multiple directions caused by reflection and/or glare."

or, more technically,

http://en.wikipedia.org/wiki/Polarization


By reducing the light waves to just one plane, barriers become invisible.

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