Lab 5 The Diffraction Grating Chinua McDonald Objective: To measure the wavelength of light with a diffraction grating. Theory: The two types of diffraction gratings are the transmission and reflection gratings. They are made by ruling on a piece of glass or metal a number of evenly spaced lines with a fine diamond point. Diffraction phenomena can be analyzed in terms of Huygens’ principle‚ according to which every point on the wave front of a wave should be considered as a source
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1 Unit – 4 Engineering Physics OPTICS Dr. V.P.N. Padmanaban M.Sc.‚ Ph.D.‚ Associate Professor 1. Interference Interference of light waves is a superposition phenomenon. This phenomenon was first described by Thomas Young in 1801. It provided strong evidence for the wave theory of light. In Young’s interference experiment‚ an incident monochromatic light is diffracted by a slit in the first screen‚ which then acts as a point source of light that emits semicircular wavefronts. It is
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Mount Palomar [diameter SP42-5 of the objective is 5.08 m]‚ assuming that this distance is determined by diffraction effects. Assume a wavelength of 565 nm and the Earth-Moon distance is 3.84 x 108 m. (b) How far apart are the centres of diffraction pattern in the focal plane (f = 35.3m) of the lens? 3. Light of wavelength 440 nm passes through a double slit‚ yielding the diffraction pattern of intensity I versus P42-7 deflection angle θ shown in figure 42.27. Calculate (a) the slit width
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CONTENTS 1) INTRODUCTION 2) A) CONCEPT OF HOLOGRAPHY B) HISTORICAL ROOT C) WHAT IS HOLOGRAM 3) HOLOGRAOHIC MEMORY 4) TECHNIQUE FOR STORING DATA ON A HOLOGRAPHIC MATERIAL 5) SPATIAL LIGHT MODULATOR 6) MULTIPLEXING TECHNIQUE FOR RETREIVING DATA FROM A HOLOGRAOHIC MATERIAL 8) ERROR CORRECTION 9) TECHNICAL SPECIFICATION OF HOLOGRAOHIC DEVICE 10) A) ADVANTAGES B) LIMITATIONS 11) OBSTACLES IN DEVELOPMENT OF HOLOGRAPHIC
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YOUNG’S DOUBLE SLIT EXPERIMENT Interference Patterns This report will be performed by a group of 3 students viz. Harleen Kaur‚ Rutvi Patel and Sandhya‚ determining the wavelength of light from a laser using a double – slit slide. The laser was shone through the double – slit such that it projected interference pattern onto the paper screen. The experiment will be repeated three times varying the distance between the slit and the screen to understand the effective relationships. The expected wavelength
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Introduction! ! The Michelson Interferometer is commonly used to determine the wavelength of light or measure very small distances. It was invented by Albert Abraham Michelson and is commonly used in optical interferometry‚ a branch of physics involving a family of techniques one could use to extract information about waves by superimposing them. ! ! The original application of the Michelson Interferometer was to the famous Michelson-Morley experiment in 1887. Prior to Einstein’s
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the spectrophotometer is to measure the concentration of solute. The solute being measured must be colored and is determined based on the adsorption of light photons on a wavelength. The spectrophotometer uses a beam of light that strikes the diffraction grating that basically forms of prism of light. Then only a specific wavelength of light shines through the spectrophotometer and interacts with the solute. The light that continues past the solute hits the phototube. The spectrophotometer then
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Wave Nature of Light Objective: The purpose of this lab is to investigate interference‚ otherwise known as the diffraction of light. A beam of light acts a wave‚ and we are able to use equations so calculate the wavelength of the light used. The diffraction of a straight edge demonstrates that light waves bend around straight edges‚ allowing light to enter an area of shadow. When waves are superposed‚ they reinforce each other when crests are in phase and cancel out when they are not in phase
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Investigatory Projects in Physics | Repulsorlifts as a Method of Stable Magnetic Levitation | Repulsorlifts were used in the study to find out if they can be used to replace the wheels of a conventional car. It was hypothesized that it will be able to lift a car using magnetic repulsion forces. The different magnets were tested individually with the usual tests for magnetic strength‚ size‚ and temperature increase‚ which were done in the preliminary testing. The prototype road and car were
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fabrication of periodic surface nanorelief‚ representing one-dimensional diffraction gratings.” (Ionin‚ Kudryashov‚ Makarov‚ & Seleznev‚ 2012) It continues with theory of it. In the introduction there is a more elaborated theoretical framework of previous research and an explanation of why “However‚ this coloration principle lacks homogeneous color brightness‚ since the nanogratings efficiency will vary for different diffraction angles.” (Ionin‚ Kudryashov‚ Makarov‚ & Seleznev‚ 2012) And how “spatial
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