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DOL Inv. 2

Microscopes - Investigation 2

TermDefinition
focal plane A thin layer (plane) at a fixed distance from the objective lens where the image is in focus.
dry mount Capturing a specimen between two slides using no water.
field of view (FOV) The view of the objects when looking through the eyepiece.
microscope A tool used by scientists to make objects appear larger for study.
wet mount Mounting a specimen using a drop or drops of water and a coverslip.
optical power The total magnification that the microscope is set on. Multiply the eyepiece by the objective lens.
magnification The number of times an image is made to look enlarged under the microscope or simple lenses.
ocular (eyepiece) The part of the microscope you look through.
diaphragm Part of the microscope that is used to adjust the amount of light that enters through the stage of a microscope.
objective lens The nosepiece holds 3 or more of these. One is 4x, 10x and 40x.
total magnification Find by multiplying the ocular by the objective lens in use.
millimeter Smallest metric measurement on a ruler. 10mm = 1cm
diameter A straight line across the center of circle.
orientation The position of an object.
appearance The way the object looks under the microscope compared to how it looks on the stage.
coarse adjustment knob (focus) Moves the stage up and down quickly. Use only on LOW POWER.
fine adjustment knob (focus) Moves the stage up and down slightly. Use on any power.
nosepiece Rotates between the objective lenses.
slide Holds the specimen for viewing.
coverslip Small piece of plastic used to protect the specimen and microscope.
inverted Same as upside down.
micrometer Used to measure microscopic specimens. 1000 of these = 1mm
Created by: jhshwood
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