| Question | Answer |
| 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 |
