Mondo Knows Facts
Polarised glasses give each eye a separate image
Two projectors send light polarised at right angles, so each lens blocks the other In a polarised 3D system, the two projectors carry matching filters and the audience wears glasses with crossed filters. Each eye therefore sees only its own picture, and the brain fuses the pair into depth. Later systems used circular polarisation so viewers could tilt their heads. It sits in Mondo's movies & tv collection, one of 200 facts that each trace back to the reference below.
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Facts that can change over time are reviewed and updated. If something here looks wrong, Mondo would rather know than be confidently incorrect.
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Tags: projection, 3d, cinema
Polarised glasses give each eye a separate image: the short answers
- Where does this come from, and can I check it?
- Two projectors send light polarised at right angles, so each lens blocks the other. The figure is taken from Encyclopaedia Britannica, which is linked in full on this page. Every fact on Mondo Knows names its source rather than repeating an unsourced claim.
- Is this really a movies & tv fact?
- Yes. It sits on the Movies & TV shelf, one of 2,600 sourced facts grouped into space, animals, the human body, history, science and more. Category pages collect every fact in the same field.
- What else can I read about it?
- The links under the fact point to a quiz, game, puzzle or calculator on the same subject, and the shelf below shows related facts. The wording here is original, and quoted phrases are marked as quotations.