BRIGHTFIELD MICROSCOPY

Brightfield microscope

A type of compound microscope that allows light rays to pass directly to the eye without being defected by an intervening opaque plate.

Resolving power

the ability of a lens to show two adjacent objects as discrete entities.

Working distance

proximity of the slide to the bottom of the objective lens.

Refractive Index

the light-bending abilities of glass, oil, and air media through which light must pass during image formation.

total magnification

this is calculated by multiplying the ocular magnification by other objective magnification.

resolving power/resolution

ability to completely separate two objects in a microscopic field.

70% or 80%

It is recommended to adjust the aperture iris diaphragm to about.__ and __ for better image resolution and contrast.

Coccus

A spherical bacterium.

Rod or bacillus

cylindrical shaped bacteria

spirillum

spiral/S shaped bacteria

diplococci

Spherical/cocci bacteria that grow in pairs and cause diseases such as pneumonia.

coccobacilli

a bacterium that is an oval rod

streptococci

bacteria that form a chain

micrococci and staphylococci

large cocci in irregular clusters

Streptomycetes

*Mold-like* filamentous bacteria

spirochetes

long, slender, spiral shaped bacteria