Parts of Microscope Flashcards
A cylindrical metallic tube that holds the eyepiece tube that holds the eyepiece lens at one end and connects to the nose piece at other end.
Head
This is the part connecting the base to the head and the eyepiece tube to the base of the microscope. It supports the head of the microscope and is also used when carrying the microscope.
Arm
the lowermost part of the microscope that supports the entire microscope structure.
Base
The ________ (ocular Lens) is closest to the viewer’s eye. They are located at the top of the microscope.
Eyepiece
It’s the eyepiece holder. It carries the eyepiece just above the objective lens. In some microscopes, such as the binoculars, the eyepiece tube is flexible and can be rotated for maximum visualization for variance in distance.
Eyepiece Tube
control knob present only in the binocular microscope that is used to change focus on one eyepiece. It is used to correct any difference in vision and compensate for the differences in vision between the viewer’s two eyes.
Diopter Adjustment
is a movable circular structure that houses all the objective lenses. It is also called the revolving turret. It is connected to the body tube and lies just above the stage.
Nose Piece
the lens that is closest to the specimen. They are fitted on the nosepiece. A standard microscope has 3 to 4 objective lenses of different magnifying powers: 4X, 10X, 40X, and 100X.
Objective Lenses
Knobs are the control knobs used to focus the microscope on the specimen.
Adjustment Knobs
used for fine adjustment. It is a smaller knob and is used to move the stage up or down very slowly. The stage covers a very small distance on each rotation of the fine adjustment knob. It is used to sharpen the image.
Fine Adjustment Knob
used for focusing the image under low power magnification. It is a larger knob and is used to move the stage up or down very rapidly.
Coarse Adjustment Knob
This is the section in which the specimen is placed for viewing.
Stage
are the control knobs used to move the stage mechanically. There are two knobs; one for moving left and right and the other for moving forward and backward. This will move the slide in the field of vision.
Stage Control Knobs
This is a hole in the microscope stage through which the transmitted light from the source reaches the stage.
Aperture
is a light source. In some compound microscopes, a mirror, which reflects the light from an external source to the sample, is used.
Microscopic Illuminator
These are lenses that are used to collect and focus light from the illuminator into the specimen.
Condenser
It’s also known as the iris. It is found under the stage of the microscope, and its primary role is to control the amount of light that reaches the specimen.
Diaphragm
This is a knob that moves the condenser up or down, thus controlling the focus of light on the specimen.
Condenser Focus Knob
This condenser specially designed for high-quality microscopes makes the condenser movable and allows very high magnification above 400X. High-quality microscopes normally have a higher numerical aperture than objective lenses.
Abbe Condenser
It controls how far the stages should go, preventing the objective lens from getting too close to the specimen slide, which may damage the specimen.
The rack stop
_____ ______ is an electrical control device. ______ _______ are used to on and off the Illuminator
Light Switch
system controls the voltage supplied to the light bulb, controlling the intensity (brightness) of the light bulb.
Brightness Adjustment
