Who invented the first folded microscope?

There is no overall consensus regarding the inventor of the first compound microscope. Most of the authorities believe that the tool that was invented by the Dutch manufacturer of the spectacle and glasses of Zacharias Janssen, in Middleburg, Holland around 1595, believed that his father Hans Janssen - both collaborated to design and building glasses and glasses. However, some other authorities believe that Hans Lippershey, a German living in the same city, and also a manufacturer of viewers, invented the first folded microscope at about the same time; Although it is credited to inventing a telescope, there are more doubts about its invention of the microscope. It is likely that Lippershey and Janssens who knew each other all contributed to the development of both instruments. It consists of a relatively powerful lens with a short focal length - known as a target - and a larger but less powerful lens with a relatively long focal length known as a eyepiece. Both lenses are usually connected by a tube; An object to be a novelOuman, is located under the lens lens and focused by setting the distance to the object.

Janssens would be familiar with the production and characteristics of the lenses due to their employment, and it is assumed that the first folded microscope could appear from their attempts to build stronger glasses. None of the oldest tools Janssens survived, but the first folded microscope that still exists can be seen in the Middleburg Museum and is expected to have been made by Janssens. It is not very similar to a modern microscope with a stand, a phase on which samples and interclaimable lenses can be placed that provide a number of magnification. Instead, it resembles a small telescope that it consists of two tubes, each of which has a lens at one end, holding a slightly wider tube so that they can be moved back and forward to focus on the subject of interest and change enlargement. Although this microscope was clearly designed as a hand, exThere are links to another early microscope, built by Janssens, which stood on a tripod and would probably look more like a modern tool.

The earliest surviving microscope could only increase objects about three times up to nine times. Yet it worked on the same principles as a modern microscope and prepared a way for the development of tools that would provide much higher magnification, and opened the previously unknown microscopic world. Later, in the 17th century, another Dutch amateur scientist, Anton van Leeuwenhoek, used microscopes of his own design to study microorganisms in water drops; Although stronger than Janssens compound microscopes, Leeuwenhoek had only one spherical lens. British scientist Robert Hooke, contemporary Leeuwenhoek, has made a number of enhancements to a composite microscope that allowed to achieve much higher magnification. His work from 1665 Micrographia documents his observation of insects, cells and microorganisms and helped create a compound microscope as the basicA tool for scientists.