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Eyepiece: The Lens The Viewer Looks Through To See The

The document summarizes the key parts of a compound microscope in 3 sentences: The eyepiece, body tube, arm, nosepiece, and objective lenses make up the viewing components of a microscope, while the stage, slides, illumination, and condenser are involved in holding and lighting specimens. Focusing is achieved through coarse and fine adjustments, and lenses ranging from 4X to 100X can be used via the nosepiece. Diopter adjustments, iris diaphragms, and stage controls further aid the viewing and examination of specimens.

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Kemuel Lozada
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137 views4 pages

Eyepiece: The Lens The Viewer Looks Through To See The

The document summarizes the key parts of a compound microscope in 3 sentences: The eyepiece, body tube, arm, nosepiece, and objective lenses make up the viewing components of a microscope, while the stage, slides, illumination, and condenser are involved in holding and lighting specimens. Focusing is achieved through coarse and fine adjustments, and lenses ranging from 4X to 100X can be used via the nosepiece. Diopter adjustments, iris diaphragms, and stage controls further aid the viewing and examination of specimens.

Uploaded by

Kemuel Lozada
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
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Download as DOCX, PDF, TXT or read online on Scribd
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Eyepiece: The lens the viewer looks through to see the

specimen. The eyepiece usually contains a 10X or 15X power


lens.

Diopter Adjustment: Useful as a means to change focus on one


eyepiece so as to correct for any difference in vision between
your two eyes.

Body tube (Head): The body tube connects the eyepiece to the
objective lenses.
Arm: The arm connects the body tube to the base of the
microscope.

Coarse adjustment: Brings the specimen into general focus.

Fine adjustment: Fine tunes the focus and increases the detail
of the specimen.

Nosepiece: A rotating turret that houses the objective lenses.


The viewer spins the nosepiece to select different objective
lenses.

Objective lenses: One of the most important parts of a


compound microscope, as they are the lenses closest to the
specimen.
A standard microscope has three, four, or five objective lenses
that range in power from 4X to 100X. When focusing the
microscope, be careful that the objective lens doesn’t touch the
slide, as it could break the slide and destroy the specimen.

Specimen or slide: The specimen is the object being examined.


Most specimens are mounted on slides, flat rectangles of thin
glass.
The specimen is placed on the glass and a cover slip is placed
over the specimen. This allows the slide to be easily inserted or
removed from the microscope. It also allows the specimen to be
labeled, transported, and stored without damage.
Stage: The flat platform where the slide is placed.

Stage clips: Metal clips that hold the slide in place.

Stage height adjustment (Stage Control): These knobs move


the stage left and right or up and down.

Aperture: The hole in the middle of the stage that allows light
from the illuminator to reach the specimen.

On/off switch: This switch on the base of the microscope turns


the illuminator off and on.

Illumination: The light source for a microscope. Older


microscopes used mirrors to reflect light from an external source
up through the bottom of the stage; however, most microscopes
now use a low-voltage bulb.

Iris diaphragm: Adjusts the amount of light that reaches the


specimen.
Condenser: Gathers and focuses light from the illuminator onto
the specimen being viewed.

Base: The base supports the microscope and it’s where


illuminator is located.

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