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Experiments with Diffraction

Page 1 of 10 Experiments with Diffraction Abbie Tippie and Tammy Lee What is Diffraction ? When parallel waves of light are obstructed by a very small object ( sharp edge, slit, wire, etc.), the waves spread around the edges of the obstruction and interfere, resulting in a pattern of dark and light fringes. What does Diffraction look like? When light diffracts off of the edge of an object, it creates a pattern of light referred to as a Diffraction pattern. If a monochromatic light source, such as a laser, is used to observe Diffraction , below are some examples of Diffraction patterns that are created by certain objects: OBJECT Diffraction PATTERN Sharp edge ( razor blade) Slit Wire Circular hole Sharp edge Laser beam

diffraction pattern caused by a wire of the same thickness as a slit. The only difference is that the center of the diffraction pattern looks brighter because the …

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