PPT-Unit:2 Optics Interference and Diffraction

By DrPMPatel Techniques for obtaining Interference The phase relations between the waves emitted by two independent light sources rapidly changes with time and therefore they can never be coherent. Has wave properties.. Can diffract.. Can constructively or destructively interfere. .. Coherent Light. A beam of light that has the same frequency, wavelength, phase, and direction is called . coherent. Physics 2415 Lecture 38. Michael Fowler, . UVa. Today’s Topics. Multi-slit interference. The diffraction grating: spectra. Waves and particles, more diffraction. Radio . astronomy. Light Intensity Pattern from Two Slits. Guanghui Zhu. Instrument Report:. Contents. Diffraction Mechanism. C. onstruction . of . the . Diffractometer. Applications . of . XRD. Data . A. nalysis . and . Explanation. 2D XRD. XRD Simulation. Diffraction . Optics Paraxial (first order) approximationMonochromatic aberration (Seidel and wave aberrations)Chromatic aberration (Longitudinal, Transverse) s law, FermatParaxial (first order) approximationMonoch Wave Optics. The wave nature of light is needed to explain various phenomena. Interference. Diffraction. The . particle nature of light was the basis for ray (geometric) . optics. Light waves interfere with each other much like mechanical waves do. Pg. 459 - 461. Properties of Waves. In order to study the properties of waves, a ripple tank is used. A shallow, glass-bottomed tank on left. ~2cm of water is added. Light from a source above the tank passes through the water and illuminates a screen on the table below. By Cade Grigsby. 1. What can X-ray diffraction tell us?. Structure. Bonds. Length. Type. Arrangement. Geometry of crystal. Picture. Electron density map. Diffraction. Angle. Intensity. 2. From X-Rays to Structure. Chapter. 36. Copyright © 2014 John Wiley & Sons, Inc. All rights reserved.. 36-1. Single-Slit Diffraction. 36.01 . Describe the diffraction of light waves by a narrow opening and an edge, and also describe the resulting interference pattern.. Martin Centurion. Department of Physics and Astronomy. University of Nebraska – Lincoln. 1. Outline. 2. Diffraction from aligned molecules:. 3D molecular images with sub-Angstrom resolution. Imaging of transient structures: Molecules in intense laser fields.. Zone plate. Laser-beam . diffraction. A lens transforms a Fresnel . diffraction problem to a . . Fraunhofer. diffraction problem.. The lens as a Fourier transformer. Diffraction gratings & spectrometers. Dr. Quantum. 27.1 . The Principle of Linear Superposition. When two or more light waves pass through a given point, their electric. fields combine according to the principle of superposition.. The waves emitted by the sources start out in phase and arrive at . Diffraction of Light. Newton pointed . out in his 1704 book . Opticks. , that "Light is never known to follow crooked passages nor to bend into the shadow". . This concept is consistent with the particle theory, which proposes that light particles must always travel in straight lines.. Physics . 2212. Light. Light has Wave properties. Light can Diffract. Light can Interfere. Constructively. Destructively. Wave Fronts. Lines that are perpendicular to the motion of the wave, indicate the location of the crests in the waves that are traveling together.. 1. Prelude to matter duality. Relativity (we’re trapped in 4D). The Quantum World. Implications of the Quantum Reality. The Discovery Frontier. “First. , we cannot find any clicker responses for the last two questions of session 3 for your course. There isn't anything else we can do here and you will need to throw out the last 2 questions in Session 3 to be fair to the clicker users. .