A Dutch father-son team named Hans and Zacharias Janssen invented the first so-called compound microscope in the late 16th century when they discovered that, if they put a lens at the top and ...

First invented in the late 16th century by Hans and Zacharias Janssen, a Dutch father and son team, the first so-called compound microscope was invented by discovering that if they put a lens at ...

Are you smarter than a fifth-grader? Zacharias Janssen, a Dutch 10-year-old, is said to create the first compound microscope using multiple lenses in a tube. (We're guessing his father ...

In 1590, Hans and Zacharias Janssen, a Dutch father-and-son team of spectacle-makers, created the first microscope. Clarkson replaces Kaleb Cooper with a 24-year-old nurse Claire Williams says she ...