Oddly enough, the compound microscope was invented before the single lens microscope. But the instruments were not very good to start with and much more could be seen with very small lenses of short focal length.
In about 1597 two Dutch eyeglass makers, Zaccharias Janssen and his son Hans were experimenting with lenses in a tube. They observed that nearby objects viewed through two lenses in line were magnified. Their device was the first compound microscope. However, their lenses were rather large and the magnification obtained was only about 10X.
Galileo also designed a compound microscope, but it was only useful for reflected light. Robert Hooke built the first useable British compound microscope in about 1655.
The single lens microscopes made by a Dutch amateur lens grinder Antonie van Leeuwenhoek were far superior to the early compound instruments. Van Leeuwenhoek, in about 1670,developed a method for grinding very small glass lenses. They were tiny, of the order of a millimeter in diameter, and could magnify several hundred times. Mounted in a brass plate these lenses could use transmitted light to image objects in a drop of water on the end of a metal pin. Screws were used to move the pin and focus the specimen. Van Leeuwenhoek was probably influenced by Robert Hooke's Micrographia (1665) which he might have seen when he visited London in about 1668. Amongst his vast number of discoveries were bacteria, sperm, blood cells and a myriad of protozoa. He also laid the foundations of plant anatomy. His discoveries were reported to the Royal Society in a series of famous letters. Van Leeuwenhoek made hundreds of microscopes over the years and many people copied them, including Hooke himself. Nine of van Leeuwenhoek's original microscopes still exist today.
compound light microscope - cell theory - electron microscope
compound microscope By Diana maldonado (:
Zacharias Janssen was the first person to invent the microscope and the kind of microscope he made was a compound microscope--a microscope that uses two or more sets of lenses. Plus, the first compound microscope (by Zacharias) was made around 1595 in Middleburg, Holland.
A compound microscope consists of several lenses operating together, whereas a simple microscope is one lens, like a magnifying glass. A compound microscope gives higher magnification and also better resolution than a simple microscope.
The base of a compound microscope is the very bottom of the microscope. You hold it with one hand and you hold the arm with your other hand to avoid breaking the microscope.
Zacharias Janssen's first microscope was called the "simple microscope" or "single lens microscope." It consisted of a single convex lens and was an early version of the compound microscope.
The first usable compound microscope people used was about 1655 by Robert hooke! :)
The first microscope was called the "single lens microscope" and was invented by Zacharias Janssen in the late 16th century.
Robert Hooke invented the first compound microscope.
A compound microscope
The compound light microscope came first, dating back to the late 16th century. The electron microscope was developed much later in the early 20th century.
The modern compound microscope was invented by Zacharias Janssen in the late 16th century, in collaboration with his father Hans. They were spectacle makers from the Netherlands who were credited with the creation of the first compound microscope.
He is the first inventor to invent the compound microscope
The simple one-lens microscope was invented around the 1100's. The compound microscope was invented in 1590.
They discovered the microscope in 1595
The first compound or multi -lens microscope was developed in Holland in 1590 by Hans Janssen and Zacharias.
compound light microscope - cell theory - electron microscope