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    Look at things with a microscope
    0:34

    Look at things with a microscope

     5.92K  views
    A compound microscope was invented in the Netherlands in the early 17th century
    0:38

    A compound microscope was invented in the Netherlands in the early 17th century

     4.67K  views
    The greatness of science
    0:43

    The greatness of science

     6.79K  views 1 comment