By: Elizabeth Cook
The microscope is a tool that is used in a lab to view very small (microscopic) objects. There are many different types of microscopes, but they all have the same purpose.
There are three different categories of microscopes, the electron, compound and the compound light microscope. The compound microscope is commonly used for about 10X magnification, and was invented by Zacharias Janssen. It has two systems of lenses: The ocular/eyepiece lens and the objective lens, which is closest to the object of magnification. The compound light microscope can magnify an object up to 1000X to 2000X the original size. This was also invented by Zacharias Janssen It works by using light to transmit the images to our eyes. The compound/compound light microscopes should always be carried by the base and the eyepiece(see picture below). The electron microscope is used for maximum magnification, which can go up to about 10,000,000X the original size. This microscope works by scanning a focused electron beam over a surface to create an image. The electrons then react with the object of magnification and produce the images. The electron microscope was invented by Ernst Ruska and Max Knoll. It is also much larger than the other microscope types.
Microscopes are very useful in all labs and are a major key in new discovery. Without microscopes, we would not be able to view microscopic objects and we wouldn't know as much as we do about other organisms.
Citations:
http://www.cas.miamioh.edu/mbi-ws/microscopes/compoundscope.html
http://www.explainthatstuff.com/electronmicroscopes.html
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| The Compound Microscope |
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| The Electron Microscope |
Why are schools most likely to have light microscope rather than a electron microscope?
ReplyDeleteSchools mostly use light microscopes because they cost way less than an electron microscope, and they're smaller and easier to move around.
Deletewhich Microscope would be better to use?
ReplyDelete