Parts of Microscope Flashcards
Screw that locks the head of the microscope
Observation Tube Clamping Screw
Used to clean glass and objective lenses
Lens Paper
3 factors for Resting Mode
- Eyepiece should be close together
- Stage is moved up
- Objective should be Scanner
Part of microscope where the viewer looks through to see the specimen
Eyepiece
Commonly used eyepiece magnification
10x
Distance between the two eyepieces
Interpupillary Distance
A means to change focus on one eyepiece to correct for any difference in vision between the two eyes
Diopter Ring
Connects the eyepiece to the objective lenses. aka as the Head
Body Tube
Connects the body tube to the base of the microscope
Arm
Brings the specimen into general focus
Coarse Adjustment Knob
Ability of the microscope to stay in focus, even though objective lenses are changed
Parfocality
Fine tones the focus and increases the details of the specimen
Fine adjustment knob
Rotating turret that houses the 4 objective lenses
Nose Piece
4 objective lenses
Scanner (4x)
Low Power Objective (10x)
High Power Objective (40x)
Oil Immersion Objective (100x)
Ability of the objective lenses to gather light and resolve the fine adjustment of the specimen
Numerical Aperture
Diameter of the image observed, usually in millimeters
Field Number
Objective with Red band
Scanner
Objective with Yellow band
Low Power Objective
Objective with Blue band
High Power Objective
Objective with White/Black band
Oil Immersion Objective
Objective with Green band
5 Lens Microscope
Flat platform where the slide or specimen is placed
Stage
Hole in the middle of the stage that allows light from illuminator to reach the specimen
Aperture
Turns the illuminator on or off
Switch
Adjusts the intensity of illuminator
Rheostat
Controls the amount of light that reaches the specimen
Iris Diaphragm
Used to collect and focus light from the illuminator on the specimen
Condenser
Calibration of Rheostat and Condenser for Colorless Specimens
Rheostat - Max
Condenser - Fully closed
Calibration of Rheostat and Condenser for Colored Specimens
Rheostat - Max
Condenser - Half Open or Half Closed
Oil used for Oil Immersion Objective
Cedarwood Oil
Refractive Index of Cedarwood Oil
1.52
Used to avoid slide and lenses from colliding
Pre-focusing knob