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The steroscope
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- Published on: 22 March 2016
- Published on: 22 March 2016Plus lenses?
Dear Editor
Out of ignorance, I am surprised that the lenses in a stereoscope should be described as "plus" lenses. They may be so, but I would have expected the more important property to be prism, to aid superimposition of the paired images.
Please clarify the optics involved.
BLC
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