"pseudoscope" meaning in English

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      "derived": [
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          "word": "pseudoscopic"
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          "word": "pseudoscopically"
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          "ref": "2001, Oliver Sacks, Uncle Tungsten: Memories of a Chemical Boyhood:",
          "text": "One could easily do this with stereo photographs, but one could also do it by making a pseudoscope, with a short cardboard tube and mirrors, […]",
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        "An optical instrument that reverses perception of depth."
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          "optical",
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        "(optics) An optical instrument that reverses perception of depth."
      ],
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  "word": "pseudoscope"
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      "word": "pseudoscopic"
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