The iris of the optical microscope is ____.

A) the platform that holds the specimen slide
B) the controls that bring the objective being examined into focus
C) the eyepiece through which you view an image
D) a diaphragm that opens and closes to change the amount of light illuminating the specimen
E) the mechanism that controls left-right and forward-backward movement of the stage

Optical Microscope

A type of microscope that uses visible light and a system of lenses to magnify objects, allowing for the observation of small details not visible to the naked eye.

Illuminating

Providing light to an area or making something clearer and more understandable.

Iris

The colored part of the eye, made of muscular tissue that contracts and relaxes, altering the size of the pupil.