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Biology 1161- First Lab. Jerry Walls with 100- correct answers
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Biology 1161- First Lab. Jerry Walls with 100- correct answers
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Biology 1161-First Lab. Jerry
Walls with 100%
correct answers
Magnification - answer is determined by multiplying the
strength of the oculars by the strength of the objective.
Thus 10X oculars and 4X objective would result in a 40
times magnification (40X). 10X oculars and a 40X
objective would enlarge the image by 400 times (400X).
Oculars - answer —the eyepieces, the lenses you look
through.
Objectives - answer —the lenses closest to the specimen.
Nosepiece - answer —the circular platform that houses the
objectives.
Stage - answer —the rectangular plate under the
objectives that has a hole in the center.
, Stage arm— - answer the piece of metal that swings aside
to let you put on a slide.
Stage micrometer - answer the device with two knobs that
lets you move the slide to the side and back and forth.
Condenser - answer —the large lens just below the hole in
the stage that focuses light on the specimen.
Iris diaphragmx - answer series of curved metal plates
that adjust with the iris diaphragm lever to allow you to
control how much light enters the condenser.
Understage illuminator - answer —the light source.
Coarse focus knob - answer —used only with low power. A
few turns moves the stage very close to the objectives.
Fine focus knob - answer —allows very fine, delicate
adjustment of the lenses, especially at higher powers.
Power. - answer —amount of magnification (X)
Parfocal - answer —a microscope that stays more or less in
focus, with the subject still centered, when you switch
from one power to the next.
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