Hans and Zacharias Janssen were a Dutch father and son accredited with the creation of the first microscope. Both lived in the Netherlands and were working with each other as spectacle makers.Know More
Hans and Zacharias created the first microscopes through experimenting with different lenses placed at the ends of tubes. Zacharias is typically given credit as the creator of the first microscope, but his birth records suggest his father played an essential role in its creation due to his young age. Records detailing Zacharias' life were destroyed during the bombing of Middelburg by the Germans during World War II.
The most well-known version of their microscope was an adjustable sheath consisting of three different tubes with a bi-convex lens as the eyepiece and a plano-convex objective lens. The lenses were placed at the ends of the tube. Adjusting the tubes allowed for magnification of an item up to ten times its size. It was intended as a hand-held device. The design was considered highly complex, when it was created, and served as the basis of future microscope technology. Anton van Leeuwenhoek and Robert Hooke improved on the design in the 17th century, allowing for the observation of objects as small as diatoms and individual cells.Learn more about Inventions
Although there is no single inventor of the microscope, in 1595, Zacharias Janssen and his father, Hans, invented the first compound microscope. Both glasses makers, their invention proved that a series of lenses inside a tube creates an enlarged image.Full Answer >
Hans Lippershey, a spectacle maker, invented the telescope after seeing his two children, who were playing in his shop, make a weather vane appear larger and clearer by looking through two lenses. Lippershey realized the many possibilities of this discovery, and he made the first telescope in 1608, which he called "kijker" in Dutch, which is translated as "looker."Full Answer >
The cell theory states that the cell is the basic unit of life. Hans and Zacharias Jansen greatly contributed to the various parts of this theory by inventing the first microscope.Full Answer >
Zacharias Janssen is the Dutch spectacle maker who is widely credited as the inventor of the first compound microscope. Although many of the archives surrounding Janssen's invention have been lost, historians believe that Zacharias and his father Hans invented the first microscope at some point in the 1590s.Full Answer >