![]() ![]() Interference patterns invisible at larger distances. A realistic decrease in the color intensity withĭistance from the slit(s) would make the dimmer regions of the diffraction and Interference patterns always have the same maximum color intensity allowed by ![]() The most intense regions of the diffraction and The lines on the slides are not drawn to scale. You can measure the width of the hair using theĭiffraction pattern produced by the laser light. The only thing blocking the laser light on aįourth slide is a hair. From the observed patterns you can verify the slit width w andĭetermine the slit spacing d. Single w = 20 μm wide slit or two or four w = 20 μm wide slits with slit Three of the slides block all the light except for a Wide and 2 units high and the lines on the screen are spaced by ½ unit. The screen and the slides snap to the holes on theīreadboard which have a spacing of 1 unit = 2.5 cm. Clicking anywhere on the breadboard you can rotate and You can drag fourĭifferent slides into the the of the laser beam, and you can vary the slide to Interference pattern that you can observe on a screen. In the simulation a He-Ne laser beam (λ = 633 nm) produces Fraunhofer diffraction and Answer all questions.Įxperiment 1: Observe and analyze a single slit and multiple slit diffraction patterns Open a Microsoft Word document to keep a log of your procedures. In this lab you also will investigate various polarization effects. You will use these patterns to measure the width of a single slit and a hair andĮlectromagnetic waves are transverse waves. In this lab you will use a simulation to observeĪ He-Ne laser beam (λ = 633 nm) to produce diffraction and interference pattern. Multiple-slit Fraunhofer interference pattern a large distance L > d away from the slits. Regularly-spaced slits with slit-spacing d, we observe a W, we observe a Fraunhofer single slit diffraction patter n a large distance L > When a monochromatic plane wave passes through a single slit of width Interfere, if two or more waves arrive at the same place at the same time. Physics Laboratory 9 Physics Laboratory 9Īll waves diffract, if they pass through or around obstacles, and ![]()
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