Confusing Security Product

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A high-tech, transparent window coating that blocks electromagnetic waves. Wait. It is transparent i.e. it allows light to pass through AND it blocks electromagnetic waves? I think someone needs to retake highschool physics. A more correct analysis would be that the coating is transparent to some forms of electromagnetic waves and opaque to others.

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This page contains a single entry by published on June 8, 2007 5:51 PM.

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