microscopes / magnification

• the light microscope was invented about 350 years ago it uses light to form magnified images of cells and other tiny objects
• the highest number the light microscope can produce is x2000
• the electron microscope was invented in the last century
• the electron microscope uses electrons to produce magnifications of up to 2 million
• the higher magnification of electron microscopes allow scientists to see and understand sub-cellular structures
• to calculate magnification you use magnification = size of image / size of real image
• to calculate size of real object you use size of real object = size of image / magnification
• You can use a light microscope to observe draw and label a selection of plant and animal cells.
• 1. eyepiece
  2. /
  3. revolving nose piece
  4. objective lens
  5. stage
  6. condenser
  7. illuminator
  8. base
  9. ocular lens
  10. arm
  11. coarse focus
  12. fine focus