microscope

Parfocal

Focus stays same as you move from magnification

Ocular

what you look through; 10x magnification

High power objective

Blue lens; 40x

Arm

Where you pick up microscope

Mechanical stage

Keeps slide in place by a clip

Mechanical stage knobs

Moves mechanical stage

Course focus

Moves stage to bring stage up; big knob

Fine focus

Moves stage; cannot see move; smaller knob

Base

Bottom of microscope

Light intensity knob

Controls light intensity

Light

Lights up organism from below

Condenser

Condensed light toward sample

Iris diaphragm lever

Contracts/expands based on light and preferred view

Stage

Holds slide

Low power objective

yellow knob; 10x

Oil immersion objective

Highest magnification; 100x; can only be used on slides with oil; NO COURSE

Rotating nosepiece

Holds objective and rotates them

Head

Top of microscope; holds objectives and ocular

Resolution

The ability of an optical system to discriminate two close objects as separate

Limiting factors of the resolving power of a microscope

Size of light wavelength and light refraction by objective lens

scanning objective

4x, red lens