Technologies page 306 to 309

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Technologiespage 306 to 309
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Stereoscope or Dissecting Scope

• It is for larger objects that do not need to be
  on a slide. Light is passed through a lens to
  magnify the object. 2X to 40X

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Stereoscope
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Compound Light Scope

• Light passes through a lens to magnify object.
  For objects as small as cell organelles.
  Nondestructive to cell. May need to stain
  transparent cells. 10X, 40X or 400X.

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Compound Light Microscope
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Scanning Electron Microscope (SEM)

• Electrons are bounced off the specimen to magnify
  it to see 3 dimensional surfaces. Will kill
  organism quickly. 100,000X

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Scanning Electron Microscope
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Staphlococcus
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Transmission Electron Microscope (TEM)

• Electrons pass through the specimen to magnify
  object. Can see details of cell organelles very
  well. Vacuum kills the object. 200,000X

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Transmission Electron Microscope
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Scanning Probe Microscope (SPM)

• Uses microscopic needle like probes that runs
  along the surface of an object to give 3
  dimensional images. Used to look at atoms.
  10,000,000X

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Scanning probe microscope
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X Ray Crystallography

• Uses x ray beams passed through a crystal to see
  arrangement of atoms in a molecule.

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X ray crystallography
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