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18 Cards in this Set
- Front
- Back
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______ made microscope lenses that were capable of magnifying objects up to 270 times
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Leeuwenhoek
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Why was Leeuwenhoek's microscope special?
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It allowed light to pass through the specimen
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Type of light microscope.
Passes light directly through a specimen that has natural color |
Bright field (unstained)
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Type of light microscope
Passes light directly through a stained specimen. |
Bright field (stained)
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Type of light microscope
Magnifies unstained, generally living cells, by amplifying the variations in density within the specimen. |
Phase contrast
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Type of light microscope
Shows the location of specific molecules within a specimen, by tagging the molecules with dyes or antibodies that are attached to dyes that flouresce |
Fluorescence
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Type of light microscope
Uses lasers and special optics to view only a single plane within a specimen. |
confocal
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Electron Microscopy.
These images are 3-D and they are taken of the surface of a specimen. |
Scanning electron microscope
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Electron Microscopy.
These images are of a thin slice of specimen only a few nanometers thick. |
Scanning Electron Microscopy.
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The compound microscope has ______, usually of different magnifications.
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objectives
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scanning objective has a magnification of ____, low magnification has a mag. of ____ and high magnification has a mag. of _______
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4x
10x 40x |
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The _____ supports the objectives
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revolving nosepiece
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The ____ is the platform on which a slide can be placed
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stage
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The _____ is located beneath the stage and is used to regulate the amount of light that can penetrate the specimen and enter the objective
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diaphragm
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The _____ changes the distance between the specimen and objective.
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coarse adjustment knob
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_____ is how much larger an object appears under the microscope.
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magnification
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The _____ is the ability of the microscope lens to show detail
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resolution
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______ is the distance between the tip of the objective lens and the slide when the specimen is in focus
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working distance
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