PPT-X-Ray Diffraction and Forensic Geology

What is Diffraction How are xrays used to determine crystalline structure How do I recognize specific minerals Chlorite d II q 2 q 4728 100 94 188 2503 92 179 358 4172. Textbook sections 28-4 – 28-6. Physics 1161:. . . Lecture 21. Recall. Interference . (at least 2 coherent waves). Constructive (full wavelength difference). Destructive (½ wavelength difference). 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 . 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.. GEOL.2150. Professor Lori Weeden. http://faculty.uml.edu/lweeden/FG.htm. Forensic Geology. : That branch of the earth sciences that uses rocks, minerals, fossils, soils, and a variety of geochemical techniques to provide physical evidence in criminal investigations and trials.. “Civilization exists by geologic consent” -Will Durant. Where are the world’s great cities located and why?. Why are Earliest Humans Here?. East African Rift. Water. Animals. Preservation of fossils. History. 1895. Wilhelm Conrad R. ӧ. ntgen. discovered . X-rays. 1905 . Albert Einstein introduces the concept of photons (concept not accepted until 1922). 1913 . Max von . Laue, . Walter Friedrich . Introduction I. History. 1895. Wilhelm Conrad R. ӧ. ntgen. discovered . X-rays. 1905 . Albert Einstein introduces the concept of photons (concept not accepted until 1922). 1913 . Max von . . . b. Distinguish and categorize physical and trace evidence (e.g. soil).. c. Determine the proper techniques to search, isolate, collect, and record physical and trace evidence. . SFS2. Students will use various scientific techniques to analyze physical and trace evidence.. Instrument Report:. Contents. Diffraction Mechanism. C. onstruction . of . the . Diffractometer. Applications . of . XRD. Data . A. nalysis . and . Explanation. 2D XRD. XRD Simulation. Diffraction . Mechanism. Data Analysis. Scott A Speakman, Ph.D.. Center for Materials Science and Engineering at MIT. speakman@mit.edu. http://prism.mit.edu/xray. . An X-ray diffraction pattern is a plot of the intensity of X-rays scattered at different angles . “Life is hard. Then you die.. Then they throw dirt in your face. Then the worms eat you.. Be grateful it happens in that order.”. —. David Gerrold, American science fiction writer. Forensic Geology. The geology of Iraq as a study is closely depended on basic geologic branches, such as tectonics, . stratigraphy. , . sedimentology. , petrology, paleontology and structural geology. On the other hand, there are some applied branches in geology directly related to studying geology of Iraq, such as petroleum geology, hydrogeology and economic geology. To understanding the geology of Iraq, we must return to tectonic and . . CD/DVD drive. Image top. : . http://en.wikipedia.org/wiki/File:Dismdvd.. jpg. Image bottom: . http://. commons.wikimedia.org. /wiki/. File:DVD_querschnitt.svg. (. Creative Commons license). How does a CD/DVD store data?.