NURSING ANM AND GNM

Detailed explanation-1: -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 bottom of a tube and looked through it, objects on the other end became magnified.

Detailed explanation-2: -Janssen was the son of a spectacle maker named Hans Janssen, in Middleburg, Holland, and while Zacharias is credited with inventing the compound microscope, most historians surmise that his father must have played a vital role, since Zacharias was still in his teens in the 1590s.

Detailed explanation-3: -1590: Two Dutch spectacle-makers and father-and-son team, Hans and Zacharias Janssen, create the first microscope.

Detailed explanation-4: -The early Janssen microscopes were compound microscopes, which use at least two lenses. The objective lens is positioned close to the object and produces an image that is picked up and magnified further by the second lens, called the eyepiece.

Detailed explanation-5: -Hans and Zacharias Janssen were known for inventing the compound optical microscope. This contributed to the cell theory by making it easier and more practical to observe cells.