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24 Cards in this Set
- Front
- Back
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Magnification
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Apparent increase in size of the specimen
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Resolution
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Ability to distinguish two objects that are close together
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Contrast
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Ability to distinguish an object from its background
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Eyepieces or Ocular lenses
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Where you look into the microscope
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Head
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Holds the eyepieces
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Nosepiece
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Holds the objective lenses, may be rotated to select objective lens
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Objective lenses
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Lenses right next to the specimen, they magnify the image and increase resolution
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Scanner Lens
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Usually 4x, typically used to search for the desired part of the specimen
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Low Power Lens
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Usually 10x, permits study of larger features
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High Power lens
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Usually 40x, allows detailed examination of smaller objects
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Very High Power Lens
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Usually 100x, requires special techniques for use
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Frame or Stand
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Holds the parts of the microscope in position
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Coaxial Coarse and Fine Focus Adjustment knobs
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Moves the stage up or down to focus the image of the specimen
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Stage
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Platform on which the specimen is placed
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Stage Clip
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Holds the slide in place on stage
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Coaxial Stage Motion Knob
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Moves the slide held by the stage clip
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Condenser
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Focuses light from the lamp onto the specimen
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Aperture Iris Diaphragm
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Controls angle of light reaching the specimen
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Lamp
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Provides light to illuminate specimen
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Lamp intensity knob
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Controls lamp brightness
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Field Iris Diaphragm
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Controls the width of the beam of light reaching the condenser, and therefore adjusts contrast
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Magnification
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Increase image size only, does not include increasing resolution
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Field of View
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Circle of light that is visible through the eyepieces
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Stains
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Coloured molecules that stick to specific molecules
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