| A | B |
| objective lens | lens closest to object being viewed |
| eyepiece | magnifies image 10x |
| arm & base | support the microscope and body tube |
| stage clips | hold the slide in place on the stage |
| diaphragm | controls the opening through which light passes |
| body tube | maintains correct distances between eyepiece and objectives |
| coarse adjustment knob | moves stage or body tube to allow focusing on image |
| fine adjustment knob | moves stage or body tube slightly; used with highest power objective lens |
| magnification | increases the size of the object in the microscope field |
| field of view | the area in the microscope in which an object is viewed |
| revolving nosepiece | holds objectives, and rotates them |
| compound light microscope | type of microscope made up of tube with lenses, stage, and light |
| scanning electron microscope | electron bounce off surface of object; magnify 100,000x actual size |
| transmission electron microscope | electrons pass through objects; magnify 200,000x actual size |