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Microscope

Terms in this set (17)

Arm
Supports the tube and connects it to the base
Eyepiece
the lens at the top that you look through. They are usually 10X or 15X power.
Base
The bottom of the microscope, used for support
Body tube
Connects the eyepiece to the objective lenses
Coarse adjustment
Used for focus on scanning. Usually the low power lens is used enabling the movement of the tube.
Fine adjustment
Used for focus on oil. Moves the body tube for focussing the high power lens.
Objective lens
Generally, three or four objective lenses are found on a microscope, with ranges of 10X, 40X, 100X powers. Lenses are colour coded, the shortest lens is of the lowest power, and the longest lens is high power lenses.
Light/Mirror
A steady light source (110 volts) used in place of a mirror. If your microscope has a mirror, it is used to reflect light from an external light source up through the bottom of the stage.
Stage
The flat platform where you place your slides. Stage clips hold the slides in place. If your microscope has a mechanical stage, you will be able to move the slide around by turning two knobs. One moves it left and right, the other moves it up and down.
Stage clip
hold the slides in place.
Revolving nosepiece
This is the part that holds two or more objective lenses and can be rotated to easily change
Diaphragm
Can adjust the amount of light.
glass slide
used to hold specimen for viewing
cover slip
covers specimen on a slide
Cover slip and slide
Take a glass slide, put the specimen on the slide. Put a drop of water on the specimen. Take the cover slip and at a 45 degree angle slowly place the cover slip on the specimen.
how to focus the micoscope
start with the stage at its lowest setting. Make sure the smallest objective lens is being used. Make sure its turned on and light is on. Using the course adjustment knob, slowing raise the slide until the picture is in view.
How to find total magnification
multiply the objective lens magnification by the eyepiece magnification
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