compound light microscope
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Compound Light Microscope. Uses two lenses and has a light source Ocular lens usually magnifies x10 Can be used to view living cells Highest magnification of a compound light microscope is 2,000x. Electron Microscope. Beam of electrons produce an enlarged image of specimen

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compound light microscope
Compound Light Microscope
  • Uses twolenses and has a light source
  • Ocular lens usually magnifies x10
  • Can be used to view living cells
  • Highest magnification of a compound light microscope is 2,000x
electron microscope
Electron Microscope
  • Beam of electrons produce an enlarged image of specimen
  • Highest magnification of an electron microscope is 200,000x
  • Cannot be used to view living cells
scanning electron microscope
Scanning Electron Microscope
  • Electron beam is focused on a specimen coated with a very thin layer of metal
  • Electrons that bounce off form an image on a fluorescent screen
  • Show 3-D images of cell surfaces
  • Black and white images only (artificial colors sometimes added)
transmission electron microscope
Transmission Electron Microscope
  • An electron beam is directed at a very thin slice of a specimen stained with metal ions
  • Electrons passing through the specimen strike a fluorescent screen, forming an image
  • The formed image can show the internal structure of a cell in fine detail
  • Black and white images only (artificial colors sometimes added)
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