Magnification

The amount an image is enlarged

Resolution/resolving power

The extent to which image detail is preserved

Contrast

The ability of an image to stand out against its background

Working Distance

Distance between objective & slide on stage

Field of view/diameter of field

Increase the magnification you decrease the field of view.

Parfocal

When you change lenses (to a higher or lower power) the image will always remain in focus.

Parcentral

When you switch objectives lenses the image will stay in the center of your field of view.

Light Microscopes

40x - 1000x Magnification

Light Microscopes

Produce a color image

Compound Light Microscope

Thin sections of specimen, light must pass through to see inside of the organism

Stereo Dissecting Microscope

Light shines down on specimen to view outer surface detail

Electron Microscope

350,000x Magnification

Electron Microscope

Produces black & white images (nonliving specimen only)

TEM

Transmission Electron Microscope

SEM

Scanning Electron Microscope

Scanning Power lens

4X

Low Power lens

10X

High Dry Power lens

40X

Ocular Magnification

10X

Stage

holds slide

Stage clips

secure slide

Coarse adjustment

big focus (low power only)

Fine adjustment

sharp focus

Condenser

focuses light

Diaphragm

controls light amount

Light source

illuminator

Arm & base

support

Body