On a microscope, the iris diaphragm controls the amount of light.
A micrscope is used to look closly into animal/plant cell or rocks that look old.
Zacharias Janssen
You place your slide on the stage of a microscope.
the clips
100x with oil immersion
telescope, micrscope, barometer and thermometer
Anton Van Leewenhoek
It's big under the micrscope
it is called the diaphram.
antonie van leeuwenhoek
The distance in front of and behind the focal point that is in relative focus
The diaphragm is not made out of bone, but the diaphragm is a muscle.