Compound Light Microscope. Transmission Electron Microscope (TEM)
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The Compound Light Microscope
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What is it? • The microscope pictured
above is a compound light microscope.
• The term light refers to the method by which light transmits the image to your eye.
• Compound deals with the microscope having more than one lens.
• Microscope is the combination of two words; "micro" meaning small and "scope" meaning view.
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Parts and
Uses
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Eyepiece and Body Tube • The eyepiece
contains the ocular lens which magnifies objects a given amount that is listed on the eyepiece.
• The body tube supports the eyepiece and objectives.
• How much do our microscopes magnify?
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Nosepiece, Objectives, and Stage Clips • The nosepiece
holds the 3 objectives.
• The objective lenses range in magnification from 4X, 10X, and 40X.
• The stage clips holds the slide in place.
Nosepiece
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Magnification • What happens as the power of magnification increases?
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Stage, Light, and Diaphragm • The stage supports
the slide being viewed.
• The light source projects upward through the diaphragm, the specimen, and the lenses.
• The diaphragm regulates the amount of light on the specimen.
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Arm and Base
• The arm is used to support the microscope when it is carried.
• The base supports the microscope.
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Coarse Adjustment Knob
• Moves the stage up and down for focusing.
• NOT TO BE USED WITH ANY OTHER OBJECTIVE BUT THE 4X
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Fine Adjustment Knob
• Moves the stage slightly to sharpen the image.
• Used with the 10X and 40X objective to focus.