2006-06-25 08:51:11 · 5 answers · asked by Serenity 1 in Science & Mathematics ➔ Biology
1) the rheostat (that little knob that increases or decreases the light coming from the light source)
2) the iris diaphram (works like the iris of the eye, making bigger or smaller circles for the light to pass through)--this is usually part of the condenser
2006-06-26 15:51:03 · answer #1 · answered by Mandy 3 · 0⤊ 0⤋
You can adjust the diaphragm, if present, so that it occludes more or less of your available light source. Or you can modify your light source itself. Some microscopes also allow you to adjust the voltage reaching the built-in light source from its power supply.
2006-06-25 11:43:39 · answer #2 · answered by stellarfirefly 3 · 0⤊ 0⤋
Use the Iris diaphram to adjust the light.
2006-06-25 08:57:32 · answer #3 · answered by Emerson 5 · 0⤊ 0⤋
Either adjust the diaphragm, or increase or decrease the magnification.
2006-06-25 08:56:04 · answer #4 · answered by Cap'n Eridani 3 · 0⤊ 0⤋
iris diaphragm lever and the condenser, condenser knob.
Even changing magnification (revolving nosepiece with objectives) changes light.....least light with oil immersion lense, so you often have to open up iris diaphragm to see better at 900X, 990X or 1000X
2006-06-25 14:43:25 · answer #5 · answered by gopigirl 4 · 0⤊ 0⤋