1.1.5 Microscopy

• What is the formula for magnification?

  Magnification = Image size / Object size
• What is the purpose of microscopes?

  To see what cannot be seen with the naked eye.
• What is a light microscope?

  A microscope that uses light and lenses to form an image of a specimen and magnify it.
• What can be seen with a light microscope?

  Cells and large subcellular structures.
• What is an electron microscope?

  A microscope which uses electrons to form an image.
• What can be seen with an electron microscope?

  Many small things e.g internal structures of subcellular structures.
• What is better about an electron microscope than a light microscope?

  • Higher magnification
  • Higher resolution
  • Clearer image
• What is better about a light microscope than an electron microscope?

  • Cheaper
  • Simpler