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  1. Are you ready to learn ? Science Time!
  2. Microscope: Parts and Function Presented by: Ms. Niña Angela Piedad - Cate
  3. Learning Objectives: Define Microscopy Trace the History of the Microscope  Identify and label the parts of microscope Distinguish the magnifying, illuminating and mechanical parts of the microscope State the importance of microscope in our present situation
  4. MICROSCOPY the technical field of using microscopes to view objects and areas of objects that cannot be seen with the naked eye (objects that are not within the resolution range of the normal eye).
  5. Matchy! Matchy! 1590’s 1660’s 1670’s 1931 Ernst Ruska and Max Knowll Robert Hooke Anton Van Leeuwenhoek Zacharias and Hans Jansen
  6. Activity # 1: Study the letter-maze below. Look for the six parts of the microscope hidden on the letter-maze.
  7. What Do You Think? Can microorganisms be seen with the naked eye? If not, how can they be seen? Why is the microscope important to the study of Biology?
  8. MICROSCOPE micron – small + skopein – to look up  optical instrument that uses lens or a combination of lenses used for viewing small objects not visible to the naked eye.
  10. MAGNIFYING PARTS Use to see and enlarge specimen Includes:  Eyepiece/ocular- allows you to look through and observe the enlarge image of the object Objective Lenses - magnify the image and responsible for quality of the image
  11. THREE TYPES OF OBJECTIVES  Low-power objective lens - shorter than the other objectives and magnifies about 10x. Its function is to locate and show the outline of the specimen  High-power objective lens – long and slender and magnifies about 40x or 60x. It shows the detailed structure of the specimen  Oil Immersion objective lens – may be long or short. Usually marked 99x or 100x. Cedar oil is used on the outside lens to show the specimen very well
  12. ILLUMINATING PARTS  Used to supply light to the slide on the stage  Includes:  Diaphragm - which controls the passing of light in the opening of the stage Mirror or an electric lamp/light bulb - used to provide light on the object and help focuses it.
  13. MECHANICAL PARTS  Used to support and operate the parts  Includes: course adjustment knob- which is used to move the tube and the objective lenses closer or farther away from the stage to view the image of the object, use to focus the LPO. fine adjustment knob- which moves the stage up and down and brings the image of the object into fine focus producing a clearer and more detailed view of the object.
  14. MECHANICAL PARTS  STAGE – Place where the specimen is mounted  Stage Clip- hold the slide in place  Arm - the part of the microscope that connects the eyepiece tube to the base.  Base – Used to anchor the microscope firmly on the table  Revolving nosepiece - allows proper position the objectives lenses.  Body Tube - holds the eyepiece and the revolving nosepiece in place.
  15. MECHANICAL PARTS  Inclination joint - permits the upper part of the microscope to be tipped back.
  16. Aside from knowing about the essentials of the microscope and its functions, it is also important to learn and practice how to take good care of this instrument. You should always follow the guidelines on how to maintain the good working condition of the microscope. If you are given the opportunity to use it, handle it properly and clean its parts using the appropriate materials. Return it to its proper casing and store it in a clean and dry storage cabinet away from laboratory chemicals.
  17. How to Clean and Keep the Microscope Gently wipe the lens with lens paper Replace the cover of the microscope after use Clean and inspect the microscope before and after use Always carry the microscope with one hand supporting the base and the other hand around the arm
  18. Read the following situations. Identify the part and the function of the microscope mentioned in each situation.
  19. In this time of CoVID19 Pandemic, how useful is the microscope in detecting the viruses? What kind of microscope is being used in studying this kind of virus?
  20. 1. It is held together, together with the base, when carrying the microscope a. Stage b. Arm c. Body tube d. Objective lens
  21. 2. This part is where you place the specimen a. Stage b. Eyepiece c. Objective lens d. Stage clips
  22. Which of the following would you use to study plant cell a. Kaleidoscope b. Microscope c. Telescope d. Stethoscope
  23. Which two parts of microscope magnify the image of an object? a.Eyepiece and mirror b.Objective lens and mirror c. Eyepiece and Objectives d.Objectives and Diaphragm
  24. Which of these part functions as magnifying part? a.Base b.Adjustment knob c. Mirror d.Ocular eyepiece
  25. Thank you for Listening! Happy Learning 

Notas del editor

  1. The microscope is an important tool in the study of living things. It contains lens or a combination of lenses to produce highly magnified or enlarged images of small objects or specimens. A light source could be the sunlight through the mirror or from an electric light bulb