Learning Objectives
  By the end of this topic, you will be 
   able to:
  1. Name the parts of the microscope 
   and their functions.
  2. Use the microscope to observe 
   biological specimens
  3. Know the difference between the 
   light microscope and the electron 
   microscope
    Compound Microscopes
  The microscopes used in our lab are called 
  compound microscopes because they have 
  two magnifying lens
  a. The Eyepiece Lens is the 
  lens that you look through.
  b. The objective lens is the 
  lens that is immediately 
  above the specimen.
    The Objective Lenses
  There are three objective lenses:
    -  the scanning lens with the 4X label
    -  the low power lens with the 10X 
   label
    -  the high power lens with the 40X 
   label
   Parts of the Microscope
        Parts of the Microscope
         Part                 Function
  Lenses             Magnification
  Stage              To place the slide on
  Clips              Hold the slide in place
  Diaphragm          To control the amount of 
                     light
  Coarse Focus       To focus the image
  Knob
  Fine Focus Knob    To precisely focus the image
  Light              To supply light to the object