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Activity 1: Focal Length of a Lens. . . . . . . . . . . . Flashlight or table lamp at the end of classroom (long distancecompared to focal length).Light rays enter lens approximately parallel.. . . Screen or sheet ofpaper to see image.. . Lens. . f. Method 1:. Move sheet until image is in f
                
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1. Purpose of this Minilab Use lens formula to determine focal length of a lens.
Learn about image magnification in magnifying glasses, microscopes, and telescopes.
 
2. Activity 1: Focal Length of a Lens 
3. Activity 1: Focal Length of a Lens 
4. The Imaging Equation for Lenses 
5. Sign Rules For Lenses 
6. Virtual or Real Image? 
7. Activity 2: Magnification 
8. 2.2 Virtual image magnification (magnifying glass) 
9. Verifying this magnification of a magnifying glass 
10. What you should see . 
11. Remarks to formula for magnifying glass. 
12. Activity 3: Microscope 
13. Microscope: Building Instructions 
14. Microscope: Building Instructions 
15. Microscope: Building Instructions 
16. Microscope: Building Instructions 
17. Microscope: Measuring the magnification 
18. Step 2: What you should see .and measure 
19. Activity 3: Telescope 
20. Telescope: Building Instructions 
21. Telescope: Measuring the Magnification 
22. What you should see  
23. Using the Desk Lamp