1 eyepiece or ocular 2 body tube 3 fine adjustment

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1. eyepiece or ocular 2. body tube 3. fine adjustment knob 4. nosepiece 5. high power objective 6. low power objective 7. diaphragm 8. mirror (many microscopes have a light instead)
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9. base 10. coarse adjustment 11. arm 12. stage clip 13. inclination joint Identification of Parts of Microscope - The instructor will explain how to set up and move a microscope. Identify the following parts on your microscope, and record the answers to the questions in the table below. 1. Eyepiece (ocular lens): Topmost series of lenses through which an object is viewed. What is the magnifying power of the ocular lens on your microscope? 2. Body tube : holds nosepiece at one end and eyepiece at the other end; conducts light rays. 3. Arm : Supports upper parts and provides carrying handle. 4. Objectives (objective lenses): Scanning power objective : Holds scanning lens used to view the whole slide. What is its magnifying power? Low-power objective : Holds low power lens used to view the object in greater detail. What is the magnifying power of this lens on your microscope? High-power objective : Holds high power lens used to view the object in even greater detail. What is the magnifying power of this lens on your microscope? Oil immersion objective : Holds oil immersion lens and is used in conjunction with immersion oil to view objects with the greatest magnification. Does your microscope have an oil immersion objective? What is its power? This lens will be used rarely, if at all, in this course. 5. Coarse-adjustment knob : Knob used to bring object into approximate focus; used only with low-power objective. 6. Fine-adjustment knob : Knob used to bring object into final focus.
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7. Diaphragm or diaphragm control lever : Controls amount of illumination used to view the object. 8. Light source : An attached lamp that directs a beam of light up through the object. 9. Base : The flat surface of the microscope that rests on the table. 10. Stage : Holds and supports microscope slides. 11. Mechanical stage : A moveable stage that aids in the accurate positioning of the slide. Does your microscope have a mechanical stage? 12. Mechanical stage control knobs : Two knobs that are usually located below the stage. One knob controls forward/reverse movement, and the other controls right/left movement. II. Preparing a wet mount of the letter "e”. 1. With your scissors cut out the letter "e" from the newspaper. 2. Place it on the glass slide so as to look like (e). 3. Cover it with a clean cover slip . See the figure below. 4. Using your eyedropper, place a drop of water on the edge of the cover slip where it touches the glass slide. The water should be sucked under the slide if done properly.
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  • Fall '19
  • Microscope slide, Telescope, Eyepiece, Microscope Lab Activity

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