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Rational Functions |
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Optics is the study of light, including the properties of lenses. Two common types of lenses are converging lenses (such as magnifying glasses) and diverging lenses (such as the lenses used to correct nearsightedness). In this activity, you will investigate optics. |
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Internet Activity |
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Activity 9.7
Click this link to view your assignment for this activity.
http://go.hrw.com/resources/go_mt/e1/c9/ERATFUN.PDF |
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Adobe Acrobat Reader
You will need Adobe Acrobat Reader to open and print the activity. To download the reader, click "Adobe Acrobat Reader" above.
http://www.adobe.com/products/acrobat/readstep.html |
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Exploration |
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Interactive Physics and Math with Java: Converging Lens
When the Java applet finishes loading, you will see a diagram with arrows representing the object and its image. A converging lens forms an image on the opposite side of the lens from the object, provided that the object is beyond the focal length of the lens. Because of its placement, the image is a real image and is inverted, or upside-down. Move the object arrow with your mouse and notice how the values for x(obj) and x(img) change. The focal length of the lens is constant at 1 meter. Below the diagram is a discussion of the experiment.
http://www.lightlink.com/sergey/java/java/clens/index.html |
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Diverging Lens
This diagram is similar to the previous one, but now we see a diverging lens. Notice that a diverging lens forms an image on the same side of the lens as the object. The image is right side-up but is a virtual image because of its placement. Move the object arrow with your mouse and notice how the values for x(obj) and x(img) change. The focal length of the lens is constant at -1 meter. We use the same formula as before to calculate x(img).
http://www.lightlink.com/sergey/java/java/dlens/index.html |
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