| A | B |
|---|
| eyepiece | contains a 10X lens to view the specimen |
| arm | supports the body tube |
| stage | supports the specimen |
| stage opening | allows light through the specimen into the eyepiece |
| fine adjustment knob | sharpens image in higher powers |
| coarse adjustment knob | sharpens image, use only at lowest powers |
| base | supports the microscope |
| illuminator | produces light that goes through specimen |
| iris diaphragm | regulates amount of light going through specimen |
| diaphragm lever | opens and closes the diaphragm |
| mechanical stage clips | hold slide and move it |
| low-power objective | attached to nosepiece, magnifies 10X |
| scanning objective | attached to nosepiece, magnifies 4X |
| high-power objective | attached to nosepiece, magnifies 40X |
| nosepiece | holds objectives, rotates to change magnification |
| body tube | supports the eyepiece above the objective |
| total magnification | eyepiece magnification X objective magnification |
| carrying techinique | one hand under base, other hand grasping arm |
| distance from edge of table | at least 10 cm. |
| before trying to focus | move the stage so that the objective is as close to the stage as possible without touching it |
| parfocal | when focused at one power, all objectives will be in focus |
| biggest difficulty? | too much light! adjust the diaphragm |
| stage stop | keeps the stage from moving up too far |
| aperture | allows light through the stage |
