PPT-The photoelectric effect

Contents Einsteins proposed experiment Solving photoelectric problems Example 1 Example 2 Whiteboard Photon vs wave theory Waves Photons Color Brightness Energy per photon changes. Photo 1 OBJECT: To verify the photon theory of light as applied to the photoelectric effect. EQUIPMENT LIST: RCA 934 phototube, two Fluke 37 multimeters, Hewlett - Packard 6235A Triple Output Po 222 Retrore�ective photoelectric sensors The transmitter and receiver are accommodated in a single housing in retroreflective photoelectric sensors. The light emitted by the transmitter hit Bell Ringer . – Tues, 12/16. WDYS in the picture below? Write down observations for the text as well as the picture. . WDYT: what does the green team and ultraviolet team mean? . Pg. 840 in the blue Active Physics Book. simple photoelectric-cell attachment for use with an ordinary ore- microscope is described. Stabilization of the MEASUREMENT OF REFLECTIVITY 477 the trial interval, and, as they have not changed appr Introduction and aims. The development of Quantum theory in the early 20. th. century drastically changed our views on the nature of light, allowing us to consider it as a particle as well as a wave. . FINAL . EXAM. 1. FINAL EXAM. : Wednesday December 17, 12:30 P - 2:30 P in LR-1 VAN . FE. covers . Lectures 23 – 36. The study guide, formulas, and practice final exam questions are posted on the Exam Information Link below.. Before threshold frequency no kinetic energy is present. After threshold frequency the relationship is linear. E. k. =. hν. . -. . Φ. y. = mx + b. When light strikes a metal surface, electrons are ejected.. Light. Electron. Metal. Nucleus. Photoelectric Effect. More Light. Electron. Metal. Nucleus. Electron. If the threshold frequency has been reached, increasing the intensity (amplitude) only increases the number of the electrons ejected.. Activity. Photoelectric Effect. Physics. Electromagnetic Spectrum. n. = c/. l. Practical applications of the photoelectric effect. solar cells. smoke detectors. security systems. Many metals emit electrons when a light shines on their . 2/8 Day 8: . Questions?. Review SR. Intro to Quantum, Photoelectric Effect. Next: . Exam I (In-class). Photoelectric Effect. “Quantum . Mechanics is the greatest intellectual accomplishment . of the . Properties of X rays: . Travel in straight line,. Undergo reflection: follow laws of reflection,. Undergo refraction: follow laws of refraction,. Ionize the gas/ medium through which they pass,. INTERACTIONS. Definition. : the phenomenon of emission of electrons by the metals when they are exposed to light of . suitable frequency . is called as the . photo electric effect . and emitted electrons are called as . General Relativity Overview. Photoelectric effect. Photon Quantization. Q 14.1. Two protons are moving with equal speeds in opposite directions. They continue to exist after colliding and producing a neutral pion. . Course Instructor. : . Dr. Rajesh Kumar Neogy . . (rajesh.neogy@gmail.com). (Assistant Professor). Department of Physics.