Zacharias Janssen was born in 1580 in the country Windmills, Holland, and died at the age of 58 years or more precisely in 1638. is a scientist from the Netherlands. The most famous discovery is the first microscope is used to view objects that are very small in size and difficult to reach when using the naked eye. Invention of the microscope is a major influence on the development of science and not a few great inventions that are beneficial to the world civilization were evaluated using a microscope.
He realized very well that in this world there are objects with a smaller size and difficult to reach with the naked eye. In 1590, along with his father, he succeeded in creating a microscope by using concave and convex lenses to magnify objects look very small in size. Adjustment mechanism to focus the microscope was first created and perfected by Campini, a scientist who comes from Italy, in 1668.
The findings of the microscope when it encourages other scientists, like Galileo Galilei (Italy), to make the same tool. Even Galileo dririnya claim as the creator of the first that has made this tool in 1610.
Galileo completed the manufacture of microscopes and microscope in 1609 he made the same named inventors, the Galileo microscope. This type of microscope use optical lenses, so-called optical microscopes. The microscope is assembled from the optical lens has a limited ability to increase the size of the object. This is caused by the diffraction limit of light is determined by the wavelength of light. Theoretically, the wavelength of light is only up to about 200 nanometers. To that end, the lens-based optical microscope can not observe the size below 200 nanometers.
After that a Dutch national named Antony van Leeuwenhoek (1632-1723) continues to develop microscopic magnification. Antony Van Leeuwenhoek actually not a professional researcher or scientist. Profession is actually a 'wine terster' in the city Delft, The Netherlands. He used a magnifying glass to observe the fiber-seratpada fabric. But the great curiosity of the universe makes it one of the inventors of microbiology.
Leewenhoek using a very simple microscope to observe the river water, rain water, saliva, feces, and so forth. He is interested in the many small objects that can move are not visible with the naked eye. He called the move objects with 'animalcule' according to which the animals are very small. This discovery made him more enthusiastic in observing objects was to further improve the microscope. This is done by piling up more of the lens and put it on a silver plate. Finally Leewenhoek create a microscope that can magnify 250 200-300 times. Leewenhoek keep detailed results of these observations danmengirimkannya to the British Royal Society. One of the first on the letter dated 7 September 1674 he described the presence of very small animals which is now known as protozoa. Between 1963-1723 he wrote more than 300 letters reporting the results of his observations. One of them is the form of rods, cocci or spiral which is now known as bacteria. These findings make the world aware of the existence of a very small life forms that eventually gave birth to the science of microbiology.
When In Europe, the microscope has been known since the 17th century and used to see the animals kind of microbe. Interestingly, Japanese people love to use it for observing small insects, and the results of these books contain detailed descriptions of the on insects.