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11 Cards in this Set
- Front
- Back
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Microscope |
An instrument that magnifies specimen. |
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Specimen
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Any object under observation.
ie: cells, tissue, urine, saliva |
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Types of Microscopes |
1. Light Microscope -max magnification 1000x -uses both natural and artificial light -observation of living and dead specimen 2. Electron Microscope -uses electron beam - observation of dead specimen only - 2 types: TEM & SEM |
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TEM |
TEM = Transmission Electron Microscope -uranium (radioactive) -used for research -max magnification 1.5 million x |
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SEM |
SEM = Scanning Electron Microscope -cell structure in 3D -research = gold vapor -max magnification 500,000x |
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Ocular/Eyepiece |
Point of observation. Magnifies 10x |
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Stage |
Point of mounting specimen |
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Objective Lenses |
Provides additional magnification. Red = 4x Yellow = 10x Blue = 40x |
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Coarse & Fine Adjustment Knobs |
Focus Specimen |
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Condenser/Iris Diaphragm |
Regulation of light intensity |
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Computation of total magnification |
Formula: Total mag = Eyepiece mag x Objective lens mag 40x = (10x) x (4x) 100x = (10x) x (10x) 400x = (10x) x (40x) |
