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Micro lab test 1

QuestionAnswer
microscope used to view very small objects
2 kinds of light microscopes binocular dissecting microscope compound light microscope
binocular dissecting microscope used to study entire objects in 3 dimensions at low magnification
compound light microscope used to examine small or thinly sliced objects illumination is from below, light passes through clear sections but not opaque
eyepiece occular lens topmost series of lenses
magnifying power of occular lens 10
body tube conducts light rays holds nosepiece and eyepiece
arm supports upper parts provides carrying handle
scanning power objectives magnifying power-40 holds scanning lenses used to view whole slide
low power objective magnifying power of 100 holds low power lens to view object in greater detail
high power objective magnifying power of 400 holds high power lens to view objects in greater detail
oil immersion objective magnifying power of 1000 holds oil immersion lens used in conjunction w oil immersion to view objects w the greatest mangnification
course adjustment knob used to bring object into approximate focus used only w low 40 power objective
fine adj. knob used to bring object into final focus used w low, high, and oil immersion lens
diaphragm or diaphragm control lever controls the amount of illumination
light source attached lamp that directs a beam of light up through object, adjust intensity by rheostat button on side
base flat surface of microscope that rests on table
stage holds and supports microscope slides
mechanical stage moveable stage that aids in accurate positioning of slide
mechanical stage control knobs two knobs forward/reverse movement,right/left movement
objective power of: scanning, low power, high power, oil immersion 4,10,40,100
total (x10) magnification and color of: scanning, low power, high power, oil immersion objectives 40 red course 100 yellow, fine 400 blue, fine 1000 white, fine
inversion images appear upside down and reversed
parfocal compound microscopes keeps in focus what is in the center
diamater of field the circle visible through the lens
how do you convert from millimeters to micrometers multiply the millimeter value by 1000
3 sources of light condenser-on the left,under the table rheo stat- red dial on left iris diaphram- knob under table
meter primary unit of measure approximately 3 feet
1 meter= ? centimeters 100 centimeters
Created by: 1342111766
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