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Modern-day 3-D movies are produced by projecting
two different images onto the screen, with polarization directions
that are at 90° relative to one another. Viewers must wear headsets
with polarizing filters to experience the 3-D effect. Explain how
this works.

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Modern-day 3-D movies are produced by projectingtwo different images onto the screen, with polarization directionsthat are at 90° relative to one another. Viewers must wear headsetswith polarizing filters to experience the 3-D effect. Explain howthis works.