Intro To Microscope (1).docx - Introduction to the...

This preview shows page 1 - 2 out of 7 pages.

Introduction to the MicroscopeOVERVIEWFollow along in this online exercise, with guided instruction covering the basics of light microscopy, comparable to what you would learn in a seated lab. You will identify components of the microscope, understand the functions of those components, learn how to focus in on a specimen, and review proper care and maintenance. LEARNING OBJECTIVESIdentify the parts of the light microscope and describe the function of each.List the steps in focusing a light microscope.Describe how to properly handle the light microscope, focus slides, and clean the microscope when finished.BACKGROUNDWhen we walk out the door each day we see many examples of life on earth – trees, birds, other humans. Unless we look closer we will miss the huge diversity of life that is too small to be seen with our eyes alone. The majority of life on earth is microscopic and, until tools were available to visualize these organisms, they were completely overlooked. One of the first tools that opened our eyes to microbial life was the microscope. The light microscope uses lenses along with light to magnify items up to 1000x. This allows us to see organisms like bacteria, archaea, yeasts, protozoans, and algae that we would never notice because they are so small. In addition, we can also look closer to see cells that are the building blocks of the macroscopic organisms (like ourselves, the trees, and birds we noticed earlier.)In addition to magnifying organisms, most cells are colorless so many times preparing slides also involves adding stains (dyes) to color the cells so they are more easily viewed. The slides you will practice with today are either naturally pigmented or have been stained so we can find them more easily. Look for these colors as you are focusing the virtual microscope.THE MICROSCOPE AND YOUR EYESStudents often wonder if they should remove their glasses when using a microscope. If you are nearsighted or farsighted, there is no need to wear your glasses. The focus adjustments will compensate. If you have astigmatism, however, you should wear your glasses because microscope lenses do not correct for this problem. You should still wear

  • Left Quote Icon

    Student Picture

  • Left Quote Icon

    Student Picture

  • Left Quote Icon

    Student Picture