Who is the real inventor of the microscope?
Answer:
It is impossible to say who invented the compound microscope. Dutch spectacle-makers Hans Janssen and his son Zacharias Janssen are often said to have invented the first compound microscope in 1590, but this was a declaration by Zacharias Janssen himself halfway through the 17th century. The date is certainly not likely, as it has been shown that Zacharias Janssen actually was born around 1590. Another favorite for the title of 'inventor of the microscope' was Galileo Galilei. He developed an occhiolino or compound microscope with a convex and a concave lens in 1609.
During the 1st century AD (year 100), glass had been invented and the Romans were looking through the glass and testing it. They experimented with different shapes of clear glass and one of their samples was thick in the middle and thin on the edges. They discovered that if you held one of these “lenses” over an object, the object would look larger.
Someone also discovered that you can focus the rays of the sun with one of these special “glasses” and start a fire. These early lenses were called magnifiers or burning glasses. The word lens by the way, is derived from the latin word lentil, as they were named because they resembled the shape of a lentil bean (look up lens in a dictionary).
These lenses were not used much until the end of the 13th century when spectacle makers were producing lenses to be worn as glasses.
The early simple “microscopes” which were really only magnifying glasses had one power, usually about 6X - 10X . One thing that was very common and interesting to look at was fleas and other tiny insects. These early magnifiers were hence called “flea glasses”.
Sometime about the year 1590, two Dutch spectacle makers, Zaccharias Janssen and his father Hans started experimenting with these lenses. They put several lenses in a tube and made a very important discovery. The object near the end of the tube appeared to be greatly enlarged, much larger than any simple magnifying glass could achieve by itself! They had just invented the compound microscope (which is a microscope that uses two or more lenses).
Galileo heard of their experiments and started experimenting on his own. He described the principles of lenses and light rays and improved both the microscope and telescope. He added a focusing device to his microscope and of course went on to explore the heavens with his telescopes.
Anthony Leeuwenhoek of Holland
Robert Hooke, an Englishman (who is sometimes called the “English Father of Microscopy”)...
Hans Lippershey is commonly credited with inventing the first microscope although uncertainy still exists.
Hans Lippershey
That depends upon how far back you want to go.
Eyeglass lenses had to be invented first. Salvino D'Armate is credited with inventing the first wearable eye glasses circa 1284.
The earliest simple microscope was merely a tube with a plate for the object at one end and, at the other, a lens which gave a magnification of less than ten times the actual size.
About 1590, two Dutch spectacle (eyeglasses) makers, Zaccharias Janssen and his son Hans, while experimenting with several lenses in a tube, discovered that nearby objects appeared greatly enlarged. This was the forerunner of the compound microscope and of the telescope.
In 1609, Galileo heard of these early experiments, worked out the principles of lenses, and made a much better instrument with a focusing device.
Anton van Leeuwenhoek of Holland taught himself new methods for grinding and polishing tiny lenses of great curvature which gave magnifications up to 270 diameters, the finest known at that time. These led to the building of his microscopes and the biological discoveries for which he is famous.
He was the first to see and describe bacteria, yeast plants, the teeming life in a drop of water, and the circulation of blood corpuscles in capillaries.
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