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Definition
| instrument that produces an enlarged image of an object |
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| increase of an object's apparent size |
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| power to show details clearly or ability to produce a clear image (as magnification increases, this decreases) |
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| compound light microscope (LM) |
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Definition
used to see small organisms and cells
(specimen must be thin so that light will pass through, has two lenses stacked on top of each other) |
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| a beam of electrons produces an enlarged image of the specimen |
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| transmission electron microscope (TEM) |
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| beam of electrons passes through a very thinly sliced specimen |
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| scanning electron microscope (SEM) |
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Definition
| specimen is sprayed with a metal so when electrons pass over surface, they bounce off and are projected onto a fluroescent screen or photographic plate |
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Who made 400 different lenses?
called the father of microbiology (first to view prorozoa)
called protozoa (animalcules)
first to describe a bacterium |
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| permanent slides that are made to last a long time |
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| temporary slides that are made to last only a short time |
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| Tell your teacher at once if you find any parts of the microscope missiong or damaged |
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| To avoid scratching the lenses, never clean or wipe them with anything other than lens paper. use a new piece of lens paper on each lens you clean. Never touch a lens with your finger. The oils on your skin may attract dust or lint that could scratch the lens |
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| Always look at the microscoe from the side when moving an objective so that the microscope does not hit or damage the slide |
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Definition
| Never use the sun as a direct source of light |
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Definition
| To avoid moving the objective into the slide, never lower the objective toward the stage while looking through the eyepiece |
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Definition
| Never use the coarse adjustment whenfocusing the high-power objective lens. This could break your slide or damage the lens. |
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