How To Use A K12 Microscope

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How practice you lot turn the image on the left (below) into the paradigm on the right?

With a compound microscope!

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What is a compound microscope?

A compound microscope consists of two or more double convex lenses fixed in the two ends of a hollow cylinder.

compound microscope

Who invented the compound microscope?

Every bit far back as the first century, Romans discovered that clear drinking glass, when held upward to or over an object, had the foreign quality of making the object announced larger.

This discovery led to much experimentation during the centuries that followed, and there are notwithstanding disputes nigh who should be rightfully credited with the invention of the very starting time chemical compound microscope.

It was non until the 1590s that a father and son pair of Dutch eyeglass makers, Zacharias and Hans Jansen, began to really experiment with the glass lenses. They put several lenses in a tube and made an intriguing discovery: The object near the end of the tube appeared to exist greatly enlarged, much larger than any image a magnifying glass that existed at the fourth dimension could produce!

They began to sell these microscopes every bit novelty items. The scientific customs saw no existent use for them because the maximum magnification reached simply 9x, and the images were said to have been blurry, at best.

A century later, another Dutchman, this time a draper and scientist named Anton van Leeuwenhoek, achieved greater success than the Jansen family unit past developing means to make the lenses more than clear.

He also found ways to use more than lenses within a single microscope. He accomplished this by grinding and polishing five hundred and fifty lenses to make his new lens tube that had a magnifying power of 270x and could view objects one millionth of a meter in size (other microscopes of the menstruation could only attain a maximum of 50x magnification).

Van Leeuwenhoek made many biological discoveries using his microscopes. He was the showtime to encounter and describe bacteria, yeast plants, the microcosm of life in a single drop of h2o, and the circulation of blood corpuscles in capillaries.

Van Leewenhoek's work was verified and further developed by English scientist Robert Hooke, who published the get-go work of microscopic studies, Micrographia, in 1665. Robert Hooke's detailed work, that included his ain illustrations, furthered report in the field of microbiology in England and advanced biological science every bit a whole.

During the 350 plus years that have passed since Hooke fabricated his discoveries — such equally viewing cells of a piece of cork, and using sparse slices of an object to obtain the all-time view — the compound microscope has evolved to allow us to come across things in our homes, classrooms, and laboratories that humans one time never thought possible.

The compound microscope also inspired other modern advancements in microbiology, including the electron microscope that allows humans to view nanoparticles!

How does a chemical compound microscope work?

Sentry the video, How to properly use a compound low-cal microscope (below):

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Main parts and functions of a typical compound microscope:

objective lens - magnifies the image on the slide
eyepiece - allows you lot to run into the object and likewise magnifies the image
mirror - reflects lite from some other source through the image being observed
aligning knob - allows yous to focus the prototype, or make it more clear, and then it can be easily seen
stage - holds a slide containing the object to be viewed
stage clips - secure the slide on the stage