BORLANDRITAL7 (2)

# BORLANDRITAL7 (2) - :VirtualOptics,Textbookpage837...

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Worksheet for Interactive Lab7 : Virtual Optics, Textbook page 837 Name: Rita Borland   Course: Physics   Date: Sunday June 13, 2010  What happens when light encounters an object in its  path? If that object is a brick wall, or a dirty shoe, not much: most of the light is absorbed,  and a small fraction bounces off in all directions. It's not very interesting and, beyond  allowing us to see the object, it's also not very useful. But if that object is a lens, or a  mirror, then the light will behave in a predictable manner. You can calculate which  direction it will go, and design a system to focus light in any place you choose. This can  be very profitable, as any maker of video cameras or eyeglasses will tell you. 1. (6 points) You can add light of different colors (wavelengths) by checking the boxes  under the Beam Control menu. Switch to a single beam of light, then click the  Green box. Now the incoming light will be a mixture of red and green light. What  happens when it strikes the lens? Can you explain why? Answer: From what I am noticing the wavelengths are shown by the reflection of  the surface. If the surface wasn’t as big the reflection wouldn’t be as big either. I  used the concave lens and what I see is that the center of the object is where the

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