Using_Compofbdcbdcc cndund_Microscope.pptx

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1. Using a Compound Microscope Exploring the Worl d of the Very Small

2. What is a Compound Microscope? - A microscope with two sets of lenses (ocular and objective) - Provides higher magnification than a simple microscope - Used to observe tiny specimens not visible to the naked eye

3. Parts of a Compound Microscope - Ocular lens (eyepiece) - Objective lenses (low, medium, high power) - Stage and stage clips - Coarse and fine adjustment knobs - Light source/illuminator - Arm and base

4. Preparing the Microscope - Place the microscope on a flat surface - Plug in or turn on the light source - Start with the lowest power objective

5. Preparing the Slide - Place specimen on a glass slide - Add a drop of water (if needed) - Cover with a cover slip carefully - Place the slide on the stage and secure with clips

6. Focusing the Microscope 1. Look through the ocular lens 2. Use coarse adjustment knob (low power only) 3. Switch to higher objectives as needed 4. Use fine adjustment knob for sharp focus

7. Proper Use and Care - Always carry with two hands (arm + base) - Start and end with lowest power - Never touch the glass lenses with fingers - Clean lenses only with lens paper

8. Applications - Studying cells and microorganisms - Medical laboratories - Research and education - Forensic investigations

9. Activity – Microscope Hunt - Observe a prepared slide (e.g., onion cell, cheek cell) - Draw what you see - Identify under which objective lens it was clearest

10. Conclusion - Compound microscopes let us see the hidden microscopic world - Proper use ensures clear results and long-lasting equipment - Science begins with careful observation