Arm
Curved piece of metal that holds the body tube in place over the stage and base; hold microscope by this part
Mirror or light source (lamp)
Increases the amount of light shining through your specimen
Stage
The flat surface on which you put your slide
Low-power objective lens
Magnifies the image on the slide (usually 4X)
Coarse adjustment knob
Large knob used to adjust the position of the body tube, allowing you to quickly bring your specimen into view; use this first and NEVER under high power.
Base
Heavy bottom part that supports all the other parts of the microscope; hold microscope by this
Medium-power objective lens
Magnifies the image on the slide (usually 10X)
Body tube
Light passes through this hollow tube; maintains correct distance between ocular lens and objective lenses
Stage clips
Holds the microscope slide in place on the stage
Revolving nosepiece
Holds the objectives and allows you to change the position of the objectives so that you can change magnification
Diaphragm
Changes the amount of light that enters the body tube and shines through the sample on the stage
Objective lenses
Magnifies the image on the slide; has lens and tube called a mount
Eyepiece
Also called ocular lens; allows you to see the object and magnifies the image (usually 10X)
Total magnification of microscope
Multiply Ocular lens (eyepiece) magnification (10X) by Objective lens magnification (4X, 10X, 40X on our class microscopes)= 40X, 100X, or 400X
High-power objective lens
Magnifies the image on the slide (usually 40X)