'Work function' diaporamas de présentation

The Story of the Quantum

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Chapter26: Photoelectric Effect

Chapter26: Photoelectric Effect. 26-1 Photoelectric Effect. 26-1Photoelectric Effect. Scientists had noticed that when you shine light onto some types of metal, a measurable voltage is produced The light seems to transfer energy to the metal which causes an electric current

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Textbook:

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Revision Notes - Unit 1

Revision Notes - Unit 1. Particles. INTRODUCTION to Elementary Particle Physics. Cosmic Rays. Fundamental building blocks of which all matter is composed: Elementary Particles. Pre-1930s it was thought there were just four elementary particles . electron.

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Determining Parameters in the Spicer-Model and Predicted Maximum QE

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Integrated Circuit Devices

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Photon-Enhanced Thermionic Emission A New Approach to Solar Energy Harvesting

Photon-Enhanced Thermionic Emission A New Approach to Solar Energy Harvesting. Jared Schwede schwede@stanford.edu SLAC Association for Student Seminars September 8, 2010. Outline. Global Context Renewable energy is a large (but achievable) endeavor Importance of solar

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StreamX10: A Stream Programming Framework on X10

StreamX10: A Stream Programming Framework on X10. Haitao Wei 2012-06- 1 4. School of Computer Science at Huazhong University of Sci&Tech. Outline. 1. Introduction and Background. 2. COStream Programming Language. 3. Stream Compilation on X10. 4. Experiments. 5.

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Quantum Physics

Quantum Physics. What makes one atom different from another?. The amazing colors produced in fireworks are a result of the different types of atoms that are used. The colors depend on the chemical characteristics of the elements used to make them.

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New Time Reversal Parities and Optimal Control of Dielectrics for Free Energy Manipulation

New Time Reversal Parities and Optimal Control of Dielectrics for Free Energy Manipulation. Scott Glasgow Brigham Young University , Provo Utah 84602 USA glasgow@math.byu.edu Chris Verhaaren University of Maryland, Department of Physics cver@umd.edu John Corson

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Results from Madrid and Leipzig

Results from Madrid and Leipzig. 1. Characterization of magnetic spots in HOPG: Bombarded spots exhibiting magnetism are insulating. From ohmic to Ballistic resistance in HOPG Resistances,mean free paths, densities and gigantic mobilities. . EFM in bombarded magnetic spots.

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Composition and thickness dependence of secondary electron yield for MCP detector materials

Composition and thickness dependence of secondary electron yield for MCP detector materials. Slade J. Jokela, Igor V. Veryovkin, Alexander V. Zinovev, Jeffrey W. Elam, Anil U. Mane, and Qing Peng Argonne National Laboratory. Motivation. Large Area Picosecond Photo-Detector Project (LAPPD)

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The Photoelectric Effect

The Photoelectric Effect. The Photoelectric Effect. Light hits a metal plate, ejecting electrons Once ejected, electrons are attracted to a positively charged electrode. Electrode is connected to a sensitive meter. When light shines on the metal plate, meter deflects (gets a current reading)

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Introduction to electrochemical systems

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The photoelectric effect

The photoelectric effect. To be a wave or a particle? That is the question. Quick overview:. X-ray machine hits target with electrons and EM radiation flies out In the photoelectric effect, you hit target with EM radiation and electrons fly out!

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Wave/Particle Duality

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Photoelectric effect

Photoelectric effect. Pair Processing. In your own words, describe what happens in the photoelectric effect?. Light energy goes in to the photovoltaic surface. (Higher frequency= More Energy!) Some of that energy is used to remove an electron from the atom.

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HomeWork PHY240: Particle Properties of Light

HomeWork PHY240: Particle Properties of Light. September 28, 2010 Due October 6, 2010. PHY240 PHYIII: Chp3 Particle Properties of Waves. Question #1 Planck constant ( i ) is a universal constant (ii) is the same for all metals (iii) is different for different metals

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pHOTOeLECTRIC eFFECT

pHOTOeLECTRIC eFFECT. Threshold frequency, f o , is the minimum frequency of light needed to get electrons to leave a plate (photoemmission). Every metal has a different thershold frequency. It appears as the x-intercept in the last graph below. Work function E = h fo

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