sc.912.l14.4. how do microscopes work? light microscopes produce magnified images by focusing...
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SC.912.L14.4
How do microscopes work?
Light Microscopes◦ Produce magnified images by focusing visible
light.◦ Staining can be used to show structures in the
cell.◦ Can magnify up to 1000x
Electron Microscopes◦ Produce magnified images by focusing a beam of
electrons◦ Some can magnify 100,000x
Eyepiece – contains magnifying lens Arm – supports the body tube Stage – supports the slide being observed Body Tube – Maintains the proper distance between the
eyepiece and the objectives Focus- Fine and course adjustments move the body
tube to focus the image Objective – Provides magnification. Total magnification
= eyepiece times objective Condenser or diaphragm – controls the amount of light
passing up to the eyepiece Mirror or illuminator – produces or reflects light up
toward the eyepiece
How image is created
Advantage Disadvantage
Light Microscope
Scanning Electron Microscope
Transmission Electron Microscope
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