Microscopy

• What do microscopes do?

  magnify and visualize small objects or organisms that are not visible to the naked eye
• Give and advantage of an electron microscope over light microscope

  Higher resolution and magnification capabilities
• What is the formula for finding the magnification of an object using its image size and real size?

  Magnification = Image size / Real size
• Describe how you would convert a measurement from mm to μm

  To convert a measurement from mm to μm, multiply the measurement in mm by 1000
• A student wants to look at a thin piece of onion skin under a lint microscope. Describe the steps she could take to prepare the skin viewing

  obtaining the sample, placing it on a glass slide, adding a drop of water or staining solution, covering with a coverslip, adjusting the focus, and observing the cells under the microscope
• Calculate the real length of a cell with an image size of 0.7 mm under a magnification of x 400

  0.7×400=280 mm