For millennia, the smallest point humans could see was about as wide as a human hair. Once the microscopic lense was invented roughly 1590, unexpectedly we witnessed a brand-new world that living points in ours water, in our food and also under our nose.

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But it"s unclear who created the microscope. Some historians say it was Hans Lippershey, most famed for filing the an initial patent for a telescope. Other evidence points come Hans and also Zacharias Janssen, a father-son team that spectacle machines living in the very same town as Lippershey.

Janssen or Lippershey?

Hans Lippershey, likewise spelled Lipperhey, to be born in Wesel, Germany in 1570, however moved come Holland, which was then enjoy it a duration of innovation in art and also science dubbed the Dutch gold Age. Lippershey settled in Middelburg, whereby he do spectacles, binoculars and some that the more quickly microscopes and also telescopes.

Also life in Middelburg were Hans and Zacharias Janssen. Historians attribute the invention of the microscope to the Janssens, many thanks to letters by the netherlands diplomat william Boreel.

In the 1650s, Boreel composed a letter to the medical professional of the French king in which he defined the microscope. In his letter, Boreel claimed Zacharias Janssen began writing to him around a microscopic lense in the at an early stage 1590s, back Boreel only saw a microscope himself year later. Some historians argue Hans Janssen helped build the microscope, as Zacharias was a teenager in the 1590s.


Reproduction of an initial compound microscopic lense made by Hans and Zacharias Janssen, circa 1590. Native the national Museum the Health and Medicine, Washington, D.C. (Image credit: publicly domain.)

early microscopes

The beforehand Janssen microscopes were link microscopes, which usage at least two lenses. The target lens is positioned close come the object and also produces an image that is picked up and intensified further by the second lens, called the eyepiece.

A Middelburg museum has actually one of the faster Janssen microscopes, dated to 1595. It had three slide tubes for various lenses, no tripod and was capable of magnifying 3 to nine times the true size. News about the microscopes spread out quickly across Europe.

Galileo Galilei soon boosted upon the link microscope architecture in 1609. Galileo called his device an occhiolino, or "little eye."

English scientist Robert Hooke boosted the microscope, too, and also explored the structure of snowflakes, fleas, lice and plants. The coined the ax "cell" indigenous the Latin cella, which means "small room," due to the fact that he contrasted the cells he witnessed in cork to the small rooms that monks live in. In 1665, and also detailed his observations in the book "Micrographia."

Early link microscopes provided more magnification than solitary lens microscopes; however, they likewise distorted the image more. Netherlands scientist Antoine valve Leeuwenhoek design high-powered solitary lens microscopes in the 1670s. V these he to be the first to describe sperm (or spermatozoa) from dogs and also humans. He also studied yeast, red blood cells, bacteria from the mouth and also protozoa. Valve Leeuwenhoek"s solitary lens microscopes could magnify approximately 270 times bigger than really size. Solitary lens microscopes remained popular well right into the 1830s, together all varieties of microscopes improved.

Scientists were additionally developing new ways to prepare and contrast your specimens. In 1882, the German physician Robert Koch presented his discovery of Mycobacterium tuberculosis, the bacilli responsible because that tuberculosis. Koch walk on to use his staining method to isolation the bacteria responsible because that cholera.

The very best microscopes were approaching a limit by the start of the 20th century. A timeless optical (light) microscopic lense can"t settle objects smaller sized than the wavelength of visible light. However in 1931, German researchers Ernst Ruska and Max Knoll overcame this theoretical obstacle with the electron microscope.

Microscopes evolve

Ernst Ruska to be born the last of five children on Christmas work 1906, in Heidelberg, Germany. The studied electronic devices at the technological College in Munich and went on to examine high voltage and vacuum technology at the technical College that Berlin. It was there that Ruska and also his adviser, Dr. Max Knoll, an initial created a “lens” that a magnetic field and also electrical current. Through 1933, the pair constructed an electron microscopic lense that might surpass the magnifying borders of the optical microscopic lense at the time.

Ernst winner the Nobel prize in Physics in 1986 because that his work. The electron microscopic lense could achieve much higher resolution because an electron"s wavelength is smaller than the wavelength of clearly shows light, specifically when the electron is accelerated in a vacuum.

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Both electron and light microscopy progressed in the 20th century. Today, labs might use fluorescent sign or polarized filters to see specimens, or they use computers to capture and also analyze images that wouldn"t be visible to the human being eye. Over there are reflecting microscopes, phase comparison microscopes, confocal microscopes and even ultraviolet microscopes. Modern-day microscopes can even image a solitary atom.