'Vibrational modes' diaporamas de présentation

Physics of Music / Physics of Musical Instruments

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Physics of Music / Physics of Musical Instruments

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Chapter 12 Mass Spectrometry and Infrared Spectroscopy

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Physics of Music / Physics of Musical Instruments

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Physics of Music / Physics of Musical Instruments

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Electronic transitions (UV-vis)

UV-Vis. Electronic transitions (UV-vis). Bond vibrations (IR). Nuclear spin (NMR). UV-Vis. When UV-Vis light is absorbed by a molecule a pi electron is moved to higher energy levels. ?*. ?*. ?. h ?. ?. ?. ??. ?.

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Ch121a Atomic Level Simulations of Materials and Molecules

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Introduction to Infrared Spectrometry Chap 16

Introduction to Infrared Spectrometry Chap 16. Quantum Mechanical Treatment of Vibrations Required to include quantized nature of E From solving the wave equations of QM:. Selection rule for vib. transitions. Quantum Mechanical Treatment of Vibrations. Plot of potential energy:.

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Chapters 15&16 An Introduction to Infrared Spectrometry 1 Theory of IR Absorption Spectrometry

Chapters 15&16 An Introduction to Infrared Spectrometry 1 Theory of IR Absorption Spectrometry. 1.1 Introduction 1.1.1 Energy of IR photon Near IR 12,800-4000 cm -1 Mid IR 4000-200 cm -1 Far IR 200-10 cm -1

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5. ATOMIC DYNAMICS IN AMORPHOUS SOLIDS

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Measurements of US stave using ESPI and capacitive sensors 30 th August 2012

Measurements of US stave using ESPI and capacitive sensors 30 th August 2012. Three main tests carried out: 1. Vibrational modes (ESPI) 2. Cool down measurements Z direction (Capacitive sensors) 3. Cool down measurements X direction (Capacitive sensors).

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Where are the neutrons coming from?

?. ?. ?. ?. ?. Where are the neutrons coming from?. Spallation Physics 101. Linear Accelerator. Cockroft-Walton Injector. WNR Facility. Proton Storage Ring. Central Control Room. ER1/2. Lujan Center. 1L Target. 1L-Target. Proton beam. Bulk Shield. Window. Moderators. W-targets.

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Experimental History Leading to Quantum Theory

Experimental History Leading to Quantum Theory. Particles versus Waves. Properties of Light ~1650. Travels in straight lines in a given material Casts sharp shadows Comes in colors Reflects from smooth surfaces Refracts when traveling from one material to another

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Laser is acronym for light amplification by stimulated emission of radiation

Laser is acronym for light amplification by stimulated emission of radiation. Most lasers are made of some material such as a crystal of ruby or a gas that is enclosed in a glass tube, like argon.

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Prashanth Upadhya, Yao-Chun Shen, Giles Davies & Edmund Linfield

Terahertz Time-Domain Spectroscopy of Glucose and Uric Acid. Prashanth Upadhya, Yao-Chun Shen, Giles Davies & Edmund Linfield. Cavendish Laboratory, Cambridge University. Contents. Introduction Experiment Far-infrared absorption ? Glucose and sucrose ? Uric Acid & its derivative

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Amadeo Avogadro di Quaregna e Cerreto

Amadeo Avogadro di Quaregna e Cerreto. Ideal gas: PV = nRT = NkT (equation of state). Closed system: n constant (d n = 0). Internal energy U of an ideal gas of N atoms. {. }. Internal energy U of an ideal gas of N atoms. }. mean velocities. Newton.

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Standing Waves and the Overtone Series

Standing Waves and the Overtone Series. Standing Waves: Transverse-Stringed Instruments and Longitudinal-Wind Instruments. Longitudinal Standing Waves .

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Raman Spectroscopy

Raman Spectroscopy. Spectrum is defined by: position of the peaks Intensity of the peaks Peak positions are a function of the force constants, and are ~constant for a given material, even with variations in incident wavelength.

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Vibrational Transitions

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String Theory

String Theory. Basic Properties. There a re two actions used to describe how the strings move through space and time. They predict where the strings are located on the world sheet which describes the embedding of the string in spacetime . Nambu-Goto. Polyakov.

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