2113L McKinney
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
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| Arm | supportive frame of microscope that joins the body tube to the base.
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| base | broad, flat, lower support of microscope
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| body tube | cylindrical tube that supports the ocular lens; extends down to nosepiece. 1 for each ocular lens
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| ocular lens | eyepiece where you place your eye(s) to observe the specimen. Magnification is usually 10x
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| Monocular lens | a single ocular lens
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| Binocular lens | 2 ocular lenses
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| Nosepiece | rotating disk at the base of the body tube where several objective lenses of different lengths are attached; turning this moves an objective piece over specimen being viewed.
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| Objective lenses | mounted on nosepiece; magnification of specimen is determined by which one is used; Longer it is, greater the magnification;
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| Working Distance | distance between tip of the lens and the top surface of the microscope slide
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| Oil-Immersion object lens | is usually 100x; a small drop of oil used on the slide to eliminate the air between lens and slide.
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| stage | flat, horizontal shelf under the objective lenses that supports the microscope slide
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| aperture | hole through which light passes to illuminate the specimen on slide
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| Coarse Adjustment knob | large dial on side that is used only at low magnification to find the initial focus
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| fine adjustment knob | knob moves the objective lens for precision focusing after coarse focus has been achieved.
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| condenser | a small lens under the stage that narrows the beam of light and directs it through the specimen on the slide
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| condenser adjustment knob | moves the condenser vertically; for most techniques, condenser should be in the uppermost position
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| iris diaphragm | is a series of flat metal plates at the base of the condenser that slide together and create an aperture in the condenser to regulate the amount of light passing through the condenser.
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| Lamp | provides the light
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Created by:
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