Translations:AY Honors/Microscopic Life/Answer Key/28/en

1. eye-piece or ocular
2. objective turret, or nosepiece
3. objective lenses
4. coarse adjustment knob
5. fine adjustment knob
6. object holder or stage
7. mirror
8. diaphragm and condenser

The eyepiece or ocular (1)

The part of a microscope that a user looks into. It contains a lens called the ocular.

Objective (3)

The objective is another lens. It is located near the specimen to be observed.

Body Tube

This is a hollow tube that connects the ocular lens to the objective lens.

Nosepiece (2)

The nosepiece is the part of the microscope that the objective lenses attach to. Sometimes the nosepiece houses a prism whose function is to bend light from the image so that the user can sit comfortably instead of hunching over the microscope to look straight down on the specimen.

Stage (6)

The stage is a platform where the slides are mounted.

Diaphragm (8)

The diaphragm is an apparatus located beneath the stage. It focuses light onto the specimen.

Base

The base is the bottom of the microscope on which the rest of the instrument rests.

Focus knob (4 and 5)

The focus knob (or knobs) adjust the distance between the ocular lens and the objective lens. This brings the specimen into focus. Microscopes often come with two focus knobs - a coarse focus and a fine focus. The coarse focus knob makes large changes in the focus. The fine focus know makes smaller adjustments.

Arm

The arm connects to the base and other parts of the microscope (such as the stage, diaphragm, and body tube) attach to it.