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Unformatted text preview: In activity 3 we were trying to compare the diffraction grating of a CD as apposed to a DVD. Set up the laser beam to be pointed toward the readable side of the CD and placed a screen with a ruler attached and hole for the laser to go through and hit the CD. The same was set up for the DVD as well. The closer the spacing the more information that can be held on the disk and therefore a DVD wins that battle. In activity 4 we set up a lamp with a T opening and in front of that was a converging lens and in front of that was a diffraction grating and then the viewing screen with paper taped to it. We focused the T onto the paper and marked the center of the T or the zero-order. We then portrayed a rainbow array onto the viewing screen and found that the violet light was closest to the zero-order....
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- Spring '08