3d Glasses Essay

Informative Speech November 15, 2011 CMM 101 E General Purpose: to inform Specific Purpose Statement: To inform my audience of two methods used for 3-D viewing. (concept) CT: There are two different methods used for 3-D viewing: anaglyphs and polarization. (chronological) Introduction: (When I was a little girl about 4 years old I had a toy that allowed me to see images in 3-D. The toy was red and looked a lot like a pair of binoculars. I could put different white circular cut outs in, each with a different set of pictures. If I clicked a little orange lever the picture would change. (Marshal Brain, founder of howstuffworks. com, which won him 4 awards including Yahoo’s best science and technology resource in 2004, explains how the toy I am describing and binocular vision works. The toy is called a view master or stereoscopic viewer. The view master imitates how our eyes already work, by using binocular vision. Our eyes are about 2 ? inches apart giving them slightly different views at the same time allowing for depth perception. ) (“People only see what they are prepared to see. ” , said classic American poet Ralph Waldo Emerson. Our brains and eyes are prepared to see life in 3 dimensions and pictures in 2 dimensions. We are unable to create a sense of depth perception for TV. and movies because both of our eyes are taking in the same image. (I went to see Lion King in 3-D with some friends. Katie had never seen a 3-D movie before. During the movie I saw something move out of the corner of my eye. I realized it was Katie raising her hand in front of her to touch the images. I laughed and she smiled back at me with a quick shrug of her shoulders. ) I had never really thought about how the producers created a 3-D effect before. Director James Cameron, the first director to produce two movies grossing over $ 1 billion announced, “Every cinema will be capable of showing 3D movies in the next five years. ” While 3D may not yet be this exclusive, 3-D technology has come a long way. (So how exactly do the images of Timon and Pumba singing Hakuna Mattatah seem to start dancing off the screen? ) We will be discussing two methods of 3-D viewing. First we will look at anaglyphs and then polarization. Transition: We all remember those silly cardboard glasses with one blue lens and one red one.

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They were used in things like comic books and found in cereal boxes. We could put them on and turn a distorted red and blue blurry image into a neat pop off the page clear picture. I. The first method used for 3-D viewing was anaglyphs. A. Anaglyphs were the earliest method of presenting theatrical 3-D. 1. In 1922 “The Power of Love” was the first 3-D movie. a. The movie used 2 camera two projector 3-D technology according to Internet Movie Database,developed by Harry K. Fairhall and Robert F. Elder at the Ambassador Hotel Theater in Los Angeles. B. Anaglyph systems do not require much specialized hardware. . According to director and writer Fred Wilder, anaglyphs take advantage of binocular viewing, by secluding each eye to take in a similar but separate image. a. Two images are shown simultaneously on one screen through separate filters. b. The images are seen through two matching filters in the lenses of the glasses. 2. Anaglyphs do not allow for full color viewing. Transition:. According to Forbes and New York Times magazine writer Mary Bellis, who has been writing about inventors since 1997, the Polaroid was invented by Edwin Land in 1948, but didn’t become very popular until 1965.

After the golden age of 3-D in the 1950’s the technology lost its appeal to viewers. People would rather see movies in color. It wasn’t until the invention of the Polaroid that 3-D would be forever changed. II. The second method used for 3-D viewing is polarization. A. There are two types of polarization linear and circular, both allowing full color viewing. 1. The major feature polarization allows for is full color viewing. 2. The Oxford English dictionary defines polarization as with the use of an object, physics restrict the vibrations of a transverse wave, especially light wholly or partially to one direction. . Polarized light requires a device of some sort to block the vibrations in all directions except one. B. One type of polarization is linear. 1. Linear polarization uses differently polarized lights to create a 3-D effect, explains John Jerit, owner of American Paper Optics, a 3-D glasses manufacturer. a. Clear glasses with the similar polarization lenses are worn to filter the opposing light sources. 2. Viewers must keep their heads level in order not to distort the image. a. Changing one’s view perspective will cause channels to bleed into each other. C. A second type of polarization is circular. . Circular polarization works similarly to linear polarization. a. A major difference between the two types is the total number of images presented on the viewing screen. b. Circular polarization is the method used for RealD 3-D. Conclusion: 3-D started millions of years ago with the first humans to look around. We see life in 3-D, and now movies, television, and video games too. Now when you go to see your first or next 3-D movie you will know how images fly off the screen. However, you will probably still want to touch the objects flying at you like Katie did. Emerson, Ralph, Waldo.

The Essential Writings of Ralph Waldo Emerson. Modern Library, 2000. eBook. Child, Ben. “James Cameron expects 100% 3D in the next five years. ” the guardian. 12 April 2011: n. page. Web. 12 Nov. 2011. Jerit, John. “How do linear polarized glasses work?. ” 3d Glasses online. Centrasource interactive agency, 2010. Web. 12 Nov 2011. LaLena, Michael. “Which 3D theater to choose. ” DIY audio and visual. lalena network, 2011. Web. 12 Nov 2011. Brain, Marshall. “How 3-D Glasses Work” 18 July 2003. Web. 12 November 2011. Wilder, Fred. “Anaglyph 3D know-how. ” stcroix studios. Fred Wilder studio, 2004.

Web. 12 Nov 2011. admin, . “Circular polarized 3d glasses vs. linear polorized 3D glasses. ” 3D cameras review. N. p. , 15 Jan 2011. Web. 12 Nov 2011. “polarize”. Oxford Dictionaries. April 2010. Oxford Dictionaries. April 2010. Oxford University Press. 12 November 2011 Henderson, Tom. “How do we know light behaves as a wave. ”: Polarization. The Physics Classroom Tutorial. 2011. Web. 12 Nov 2011. Bellis, Mary. “Polaroid photography. Instant photography. ” The New York Times Company. 2011. Web. 12 Nov 2011 “Trivia: ‘The Power of love’. ” Internet Movie Database. 2011. Web. 12 Nov 2011.

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