Presentation on theme: "SC.912.L14.4. How do microscopes work? Light Microscopes Produce magnified images by focusing visible light. Staining can be used to show structures."— Presentation transcript:
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 AdvantageDisadvantage Light Microscope Scanning Electron Microscope Transmission Electron Microscope