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Zacharias Janssen (ca.1580-ca.1638) was a Dutch spectacle-maker of Middelburg, son of Hans Janssen. He is sometimes given the credit for inventing the first compound microscope, probably with the help of his father in the year 1590, although the origin of the microscope is a matter of debate. Events March 1 - Michel de Montaigne signs the preface to his most significant work, Essays. ... Events March 29 - Swedish colonists establish first settlement in Delaware, called New Sweden. ... Coordinates: , Country Province Area (2006) - Municipality 53. ... Hans Jannsen (1590-?) was the father of Zacharias Jansen, a spectacle manufacturer who, while playing with his fathers lenses, created the first crude microscope. ... A microscope (Greek: micron = small and scopos = aim) is an instrument for viewing objects that are too small to be seen by the naked or unaided eye. ... Bold text{| align=right cellpadding=3 id=toc style=margin-left: 15px; |- | align=center colspan=2 | Years: 1587 1588 1589 - 1590 - 1591 1592 1593 |-vdsf gno[gldw[pvkijxaiamknn csogfhbvdowkhbfkqhjkhrjkhwgfhbjkpnkfokfgok3pkpk9pjhkt9erktyujkip9kijker9thhrkg9hkitr9gtkih9t0ykltk[u0jo0iey9uhyit90ertyhige9rity9riyh9ujirtyuhjnh-4e9tyigh9thiuy0h8tyh34tu8uy8u8u8u8rtu5y8ru8thu0tru0ut0rhutuh0trhu0hseogtrhr8uyhju8t89er9te9r8fy8shit ass dick bitch fuck | align=center colspan=2 | Decades: 1560s 1570s 1580s - 1590s - 1600s 1610s 1620s |- | align=center | Centuries...
Zacharias' brother would later testify under oath that Hans Lippershey, also from Middelburg, had stolen his father's idea for a microcope. However, this is supposed to have occurred at a time when Janssen would have been only 2 years old. Since Zacharias was very young at that time, it is possible that his father Hans made the first one, and young Zacharias took over the production. Hans Lippershey (1570–September 1619) was a Dutch lensmaker. ...
The first crude compound microscope produced by the Janssens was simply a tube with lenses at each end. The magnification of these early scopes ranged from 3X to 9X, depending on the size of the diaphragm openings. A microscope (Greek: micron = small and scopos = aim) is an instrument for viewing objects that are too small to be seen by the naked or unaided eye. ...
References
Zacharias Janssen, Michael W. Davidson, The Florida State University
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