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    Question

    What was invented by 'Zacharias Janssen'?

    A Telescope Correct Answer Incorrect Answer
    B Microscope Correct Answer Incorrect Answer
    C Stethoscope Correct Answer Incorrect Answer
    D Periscope Correct Answer Incorrect Answer

    Solution

    In Boreel's investigation Johannes also claimed his father, Zacharias Jansen, invented the compound microscope in 1590.

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