12.07.2015 Views

Simple Nature - Light and Matter

Simple Nature - Light and Matter

Simple Nature - Light and Matter

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3. Now imagine the following new situation, but don’t actually do it yet. Suppose you lay themirror face-up on a piece of tissue paper, put your finger a few cm above the mirror, <strong>and</strong> lookat the image of your finger. As in part 2, you can bring your eye closer <strong>and</strong> closer to the mirror.Will you be able to see the image with your eye very close to the mirror? Draw a ray diagramto help you predict what you will observe.Prediction:Now test your prediction. If your prediction was incorrect, see if you can figure out what wentwrong, or ask your instructor for help.4. For parts 4 <strong>and</strong> 5, it’s more convenient to use concave mirrors that are more gently curved;obtain one from your instructor. Lay the mirror on the tissue paper, <strong>and</strong> use it to create animage of the overhead lights on a piece of paper above it <strong>and</strong> a little off to the side. What doyou have to do in order to make the image clear? Can you explain this observation using a raydiagram?——————–> turn page812 Chapter 12 Optics

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