EHS 1-2

29 terms by knappe 

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Arm

Supports the body tube

Coarse Adjustment Knob

Brings object into rapid but fuzzy focus; only used with low power objective

Fine Adjustment Knob

Brings object into sharp focus

Diaphragm

Regulates the amount of light entering the microscope

Iris

Type of diaphragm that is a lever

Disc

Type of diaphragm that is a wheel with predetermined settings

Body Tube

Provides the proper distance between the top and lower lenses

High Power Objective

Used to view the most detail and smallest field of view

Medium Power Objective

Usually contains a 10x lens; mostly used as a focusing point

Low Power Objective

Also called the "scanning" objective because it is used to scan the slide to locate an object for viewing

Base

Supports the microscope

Lamp

Provides transmitted light to form the image

Ocular

The top lens, closest to the eye; usually contains a 10X lens

Nosepiece

Holds the objectives and rotates to allow interchange of objectives

Stage

Support the object to be viewed

Stage clips

Holds the slide in place

Wet Mount

Temporary slide involving the use of a liquid, usually water

Prepared slides

Permenant slides that allow for repeated observations

Cross section

A section of an organism made perpendicular to the longest axis

Longitudinal section

A section of an organism made parallel to the longest axis

Whole mount

A prepared slide that places the whole organism on the slide for viewing, must be thin enough for light to be transmitted through it

Magnification

The ability of a microscope to increase the apparent size of an image of an object

Resolution

The ability of a microscope to show a clear image and to show detail

Compound Light Microscope

Uses transmitted light and 2 lenses to produce an image

Electron Microscope

Uses a beam of electrons to produce an image

Dissecting Microscope

Uses incident light and 2 oculars to produce an image

Total Magnification

Ocular lens multiplied by objective lens

Labels for CLM

Type of microscope, what it is, total magnification, type of slide

Labels for DM

Type of microscope, what it is, total magnification

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