Microbiology Laboratory Midterms
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Last updated 1:01 PM on 2/28/23
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10 Terms
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Microscope
Optical tool used to observe microorganisms
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Why is it called a Compound Microscope?
Intermediate object is projected by the objectives, then enlarged by the eyepiece
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Parfocality
Viewed specimen stays in focus even when objectives are changed
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Virtual Image
Final image formed; inverted
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Magnification
How much larger object appears compared to actual size
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How do you get the Total Magnification?
By multiplying the magnifying powers of the objective and eyepiece
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Resolving Power
Measure of the clearness of the appearance of the specimen
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Focal Length
Amount of distance required between the objective lens and the top of your object
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Working Distance
Distance between the specimen and objective lens
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Numerical Aperture
Number that indicates the angles over which light can enter the lens
Note 
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