Democritus argued that all things in the universe, including light, are composed of indivisible sub components (light being some form of solar atom)
|
|
- Todd Richard
- 5 years ago
- Views:
Transcription
1 Aristotle was one of the first to publicly hypothesize about the nature of light, proposing that light is a disturbance in the element air (that is, it is a wave like phenomenon) Democritus argued that all things in the universe, including light, are composed of indivisible sub components (light being some form of solar atom) 11th Century, the Arabic scientist Alhazen wrote the first comprehensive treatise on optics; describing refraction, reflection, and the operation of a pinhole lens via rays of light traveling from the point of emission to the eye. He asserted that these rays were composed of particles of light. In 1630, René Descartes popularized and accredited in the West the opposing wave description in his treatise on light, showing that the behavior of light could be re created by modeling wavelike disturbances in a universal medium ("plenum"). Beginning in 1670 and progressing over three decades, Isaac Newton developed and championed his corpuscular hypothesis, arguing that the perfectly straight lines of reflection demonstrated light's particle nature; only particles could travel in such straight lines. He explained refraction by positing that particles of light accelerated laterally upon entering a denser medium. 1
2 Rectilinear propagation Reflection Refraction Around the same time, Newton's contemporaries Robert Hooke and Christian Huygens mathematically refined the wave viewpoint, showing that if light traveled at different speeds in different media (such as water and air), refraction could be easily explained as the mediumdependent propagation of light waves. Newton claimed that in order for the corpuscular theory to survive, the speed of light in water must be larger than the speed of light in air. "If this is ever proven to be untrue, the Corpuscular Theory must be abandoned." He explained it by light accelerating as it changed direction (perhaps being attracted by the water particles.) 123 years later Jean Foucault proved that indeed the speed of light in water was less than in air. 2
3 Apr 22 8:09 AM 3
4 Thomas Young's discovery of double slit interference, was the beginning of the end for the particle light camp. [4] Interference (1801) X Diffraction (1816) X 4
5 The final blow against corpuscular theory came when James Clerk Maxwell discovered electromagnetic waves. It quickly became apparent that visible light, ultraviolet light, and infrared light (phenomena thought previously to be unrelated) were all electromagnetic waves of differing frequency. Interference (1801) X Diffraction (1816) X Electromagnetic Theory X 5
6 In 1887 Heinrich Hertz discovered the photoelectric effect. In the photoelectric effect, it was observed that shining a light on certain metals would lead to an electric current in a circuit. Presumably, the light was knocking electrons out of the metal, causing current to flow. In 1902, Philip Lenard explained the photoelectric effect which seemed to be at odds with the wave theory of radiation. According to the classical theory of light and matter, the strength or amplitude of a light wave was in proportion to its brightness: a bright light should have been easily strong enough to create a large current. Yet, oddly, this was not so. 6
7 Interference (1801) X Diffraction (1816) X Electromagnetic Theory X Photoelectric Effect X Max Planck found that he could bring the radiation theory of the photoelectric effect into agreement with experiments by proposing E = hf. He published the Quantum Theory in Einstein used this as a basis for and published his interpretation in and so = Light shows properties of both waves and particles. Apr 23 11:04 AM 7
Unit 2 Particles and Waves
North Berwick High School Department of Physics Higher Physics Unit 2 Particles and Waves Section 4 Wave Particle Duality 1 Section 4 Note Making Wave Particle Duality Make a dictionary with the meanings
More informationThe Nature of Light. Early Greece to 20 th Century
The Nature of Light For centuries there has been debate about whether the properties of light could best be explained using a particle model of light or a wave model. This lesson will focus primarily on
More informationChapter 1. THE LIGHT General remarks Wave characteristics Frequency spectrum Dual nature of light...
Chapter 1. THE LIGHT 1.1. General remarks......................................... 15 1.2. Wave characteristics....................................... 15 1.3. Frequency spectrum......................................
More information9.4 Light: Wave or Particle?
Huygens principle every point on a wave front can be considered as a point source of tiny secondary wavelets that spread out in front of the wave at the same speed as the wave itself rectilinear propagation
More informationLight was recognised as a wave phenomenon well before its electromagnetic character became known.
VISUAL PHYSICS ONLINE MODULE 7 NATURE OF LIGHT WAVE or PARTICLE??? Light was recognised as a wave phenomenon well before its electromagnetic character became known. The problem of the nature of light is
More informationLight wave or particle? Pg
Light wave or particle? Pg. 470-476 The Nature of Light Light carries energy with it it is a form of energy BUT How does light travel? How is the energy of light carried from a source of energy, such as
More informationPHYS 3313 Section 001. Lecture #3
PHYS 3313 Section 001 Classical Physics Lecture #3 Concept of Waves and Particles Conservation Laws and Fundamental Forces Atomic Theory of Matter Unsolved Questions of 1895 and the New Horizon 1 Reminder:
More informationPY3101 Optics. Overview. A short history of optics Optical applications Course outline. Introduction: Overview. M.P. Vaughan
Introduction: Overview M.P. Vaughan Overview A short history of optics Optical applications Course outline 1 A Short History of Optics A short history of optics Optics: historically the study of visible
More informationPhysics 205 Modern Physics for Engineers
Physics 205 Modern Physics for Engineers Instructor Professor Duncan Carlsmith Department of Physics duncan@hep.wisc.edu 262-2485 4285 Chamberlin Physics 205 Course Information http:// www.physics.wisc.e
More informationLight as electromagnetic wave and as particle
Light as electromagnetic wave and as particle Help to understand and learn exam question 5. (How the wave-particle duality can be applied to light?) and to measurements Microscopy II., Light emission and
More informationSPH4U UNIVERSITY PHYSICS
SPH4 NIVERSITY PHYSICS THE WAVE NATRE OF LIGHT L Light: Wave or Particle? (P.470-476) Light carries energy with it. It is a form of energy. This is obvious to anyone standing out in the sun on a hot summer
More information3.3 The Wave Nature of Light
3.3 The Wave Nature of Light Much of the history of physics is concerned with the evolution of our ideas about the nature of light. The speed of light was first measured with some accuracy in 1675, by
More informationThe Duality of Light. Electromagnetic Radiation. Light as a Wave
In this unit, you will be introduced to the dual nature of light, the quantum theory and Bohr s planetary atomic model. The planetary model was an improvement on the nuclear model and attempted to answer
More informationThe Nature of Light and Matter 1 Light
The Nature of Light and Matter 1 Light ASTR 103 4/06/2016 1 Basic properties: The Nature of Light Light travels in a straight line. Most surfaces reflect light. Amount of reflection depends on the medium.
More informationPowerPoint lecture notes for Thornton/Rex s Modern Physics, 4e
PowerPoint lecture notes for Thornton/Rex s Modern Physics, 4e Prepared by: Anthony Pitucco, Ph.D. Pima Community College Dept of Physics, Chair Tucson, Arizona CHAPTER 1 The Birth of Modern Physics 1.1
More informationAPPLIED OPTICS. Lecture-1: EVOLUTION of our UNDERSTANDING of LIGHT. Is it a stream of particles?
A. La Rosa Lecture Notes APPLIED OPTICS Lecture-1: EVOLUTION of our UNDERSTANDING of LIGHT What is light? Is it a wave? Is it a stream of particles? A. Light as a particle NEWTON (164 177) was the most
More informationOrigins of Quantum Theory
Origins of Quantum Theory 3.3 Max Planck (1858 1947) is credited with starting the quantum revolution with a surprising interpretation of the experimental results obtained from the study of the light emitted
More informationWave Motion and Electromagnetic Radiation. Introduction Jan. 18, Jie Zhang
Wave Motion and Electromagnetic Radiation Introduction Jan. 18, 2010 Jie Zhang PHYS 306 Spring, 2010 Introduction This class is about the physics of LIGHT. Textbook: Optics by Ghatak (2010) Content What
More informationHeinrich Hertz, a German physicist, achieved the first experimental demonstration of EM waves in 1887.
9.4.2-1(i) Hertz s first radio wave transmission demonstration Maxwell In 1865 James Clerk Maxwell predicted the existence of electromagnetic waves. He said that an accelerating charge would produce a
More informationCHAPTER 1 The Birth of Modern Physics
CHAPTER 1 The Birth of Modern Physics 1.1 Classical Physics of the 1890s 1.2 The Kinetic Theory of Gases 1.3 Waves and Particles 1.4 Conservation Laws and Fundamental Forces 1.5 The Atomic Theory of Matter
More informationReview: The distance between similar parts of a wave is referred to as. The Properties of Light
The Properties of Light Review: The distance between similar parts of a wave is referred to as a) Frequency b) Wavelength c) Wave speed d) Refraction Did you read chapter 11 before coming to class? A.
More informationA Brief History of Quantum Mechanics
A Brief History of Quantum Mechanics R. J. Renka Department of Computer Science & Engineering University of North Texas 01/31/2018 Wave and particle theories of light In 1630 René Descartes described light
More informationThe Nature of Light and Matter 1 Light
The Nature of Light and Matter 1 Light ASTR 101 4/2/2018 Properties of light: reflection refraction, dispersion Rainbows Nature of light: wave and corpuscular theory Electromagnetic spectrum 1 Basic properties:
More informationLight and Matter(LC)
Light and Matter(LC) Every astronomy book that I ve seen has at least one chapter dedicated to the physics of light. Why are astronomers so interested in light? Everything* that we know about Astronomical
More informationWAVE-PARTICLE DUALITY. Katrina Forrestall & Emily Kingsbury
WAVE-PARTICLE DUALITY Katrina Forrestall & Emily Kingsbury History of Light Newton s Particle Model: Newton proposed that light is made up of extremely small particles that travel extremely fast Proposed
More informationEarly Quantum Theory and Models of the Atom
Early Quantum Theory and Models of the Atom Electron Discharge tube (circa 1900 s) There is something ( cathode rays ) which is emitted by the cathode and causes glowing Unlike light, these rays are deflected
More informationThe Death of Classical Physics. The Rise of the Photon
The Death of Classical Physics The Rise of the Photon A fundamental question: What is Light? James Clerk Maxwell 1831-1879 Electromagnetic Wave Max Planck 1858-1947 Photon Maxwell's Equations (1865) Maxwell's
More informationOPTI510R: Photonics. Khanh Kieu College of Optical Sciences, University of Arizona Meinel building R.626
OPTI510R: Photonics Khanh Kieu College of Optical Sciences, University of Arizona kkieu@optics.arizona.edu Meinel building R.626 Important announcements Homework #1 assigned, due Jan 24 No class Monday,
More informationPart I. Quantum Mechanics. 2. Is light a Wave or Particle. 3a. Electromagnetic Theory 1831 Michael Faraday proposes Electric and Magnetic Fields
Quantized Radiation (Particle Theory of Light) Dr. Bill Pezzaglia Part I 1 Quantum Mechanics A. Classical vs Quantum Theory B. Black Body Radiation C. Photoelectric Effect 2 Updated: 2010Apr19 D. Atomic
More information38 The Atom and the Quantum. Material particles and light have both wave properties and particle properties.
Material particles and light have both wave properties and particle properties. 38 The Atom and the Quantum Atomic structure is revealed by analyzing light. Light has a dual nature, which in turn radically
More informationELECTROMAGNETIC WAVES WHAT IS LIGHT?
VISUAL PHYSICS ONLINE MODULE 7 NATURE OF LIGHT ELECTROMAGNETIC WAVES WHAT IS LIGHT? James Clerk Maxwell (1831-1879), was a Scottish mathematician and theoretical physicist. He had an unquenchable curiosity
More informationMaterial particles and light have both wave properties and particle properties Models
Material particles and light have both wave properties and particle properties. Atomic structure is revealed by analyzing light. Light has a dual nature, which in turn radically alters our understanding
More informationLIGHT and SPECIAL RELATIVITY FRAMES OF REFERENCE
VISUAL PHYSICS ONLINE MODULE 7 NATURE OF LIGHT LIGHT and SPECIAL RELATIVITY FRAMES OF REFERENCE The location of an object and its velocity depends upon the frame of reference of an observer. Inertial frame
More informationPhys 2310 Wed. Sept. 20, 2017 Today s Topics
Phys 2310 Wed. Sept. 20, 2017 Today s Topics - Brief History of Light & Optics Electromagnetic Spectrum Electromagnetic Spectrum Visible, infrared & ultraviolet Wave/Particle Duality (waves vs. photons)
More informationLight Quanta. Particle-Wave History 11/2/2008. Particle-Wave Nature Continued s
Light Quanta Particle-Wave History 1700 s Corpuscular Model -- Newton Wave Model Huygens 1801 Thomas Young s double slit experiment waves 1862 Maxwell s prediction that light carried energy as oscillating
More informationPlanck s Hypothesis. How could we prove this theory? mardi 2 octobre 12
Planck s Hypothesis Planck s quantum hypothesis : maybe when a body emits or absorbs light of frequency f, it can t emit any old amount of energy it likes, because there is some special energy : it emits
More informationLight. November 101 Lect 11 1
Light What is light? To start, what are the observed properties of light? Describe the intrinsic properties of light light by itself. Later, what are the interactions of light? What happens when light
More informationLecture III : Jan 30, 2017
Lecture III : Jan 30, 2017 Prequantum Era Particles & Waves Reading Assignment: Chapter 2 and 3 from Quantum Physics for Poets. Summarize your thoughts with some questions/comments. ( One page writeup
More informationAnnouncements. Fast => v~c c= the velocity of light
Announcements 2402 Lab will be started this week Lab manual is available on the course web page HW: Chapter.2 70, 75, 76, 87, 92, 97*, 99, 104, 111 1 st Quiz: 9/18 (Ch.2) Nonclassical Physics *** Course
More informationLight Quantum Hypothesis
50 My God, He Plays Dice! Light Quantum Hypothesis Light Quantum Hypothesis 51 Light Quantum Hypothesis In his miracle year of 1905, Einstein wrote four extraordinary papers, one of which won him the 1921
More informationChapter 4. Development of a New Model
Chapter 4 Development of a New Model Electrons behave like particles in some experiments, and like waves in others. The electron's 'wave/particle duality' has no real analogy in the everyday world. The
More informationAQA Physics A-level Section 12: Turning Points in Physics
AQA Physics A-level Section 12: Turning Points in Physics Key Points Discovery of electrons A discharge tube contains a low-pressure gas with a high potential difference across it. Electrons are pulled
More informationFI 3103 Quantum Physics
FI 3103 Quantum Physics Alexander A. Iskandar Physics of Magnetism and Photonics Research Group Institut Teknologi Bandung General Information Lecture schedule 17 18 9136 51 5 91 Tutorial Teaching Assistant
More informationElectromagnetic Theory, Photoelectric effect and Quantum Physics
Electromagnetic Theory, Photoelectric effect and Quantum Physics Physicists John L. Emmett (left) and John H. Nuckolls were the key Lawrence Livermore National Laboratory pioneers in laser and fusion science
More informationSPH4U UNIVERSITY PHYSICS
SPH4U UNIVERSITY PHYSICS REVOLUTIONS IN MODERN PHYSICS:... L Photons & the Quantum Theory of... (P.620-623) The Work Function Around 1800, Thomas Young performed his double-slit interference experiment
More informationIntroduction to Optics
Introduction to Optics The Pasco Optics System. Figure 1 (Courtesy of PSCO) Setting up the Equipment The Optics Bench The optics bench is shown in Fig. 2 along with the light source, component holder and
More informationLecture 2. In this lecture we will go through the chronological development of the Atomic physics.
Lecture 2 TITLE: A brief history of the development of structure of atom Page 1 Objectives In this lecture we will go through the chronological development of the Atomic physics. We will find out the thoughts
More informationQM all started with - - The Spectrum of Blackbody Radiation
QM all started with - - The Spectrum of Blackbody Radiation Thermal Radiation: Any object, not at zero temperature, emits electromagnetic called thermal. When we measure the intensity of a real object,
More informationNOTES: 5.3 Light and Atomic Spectra (more Quantum Mechanics!)
NOTES: 5.3 Light and Atomic Spectra (more Quantum Mechanics!) Light WAVE or PARTICLE? Electromagnetic Radiation Electromagnetic radiation includes: -radio waves -microwaves -infrared waves -visible light
More informationLight and Geometric Optics
By the end of this week I will be able to... label a diagram of a wave Solve word problems using the wave equation identify the types of radiation on the EM spectrum explain how light behaves like a wave
More informationAnnouncements. Some Examples. Lecture 6 Chapter. 2 Special Relativity. Relativistic Dynamics. Problems. Problems
Announcements HW2: Ch.2-70, 75, 76, 87, 92, 97, 99, 104, 111 HW1 die: now, HW2 due: 2/9 (by class hour) How was your 1 st Lab? -- Any question? Lab manual is posted on the course web *** Course Web Page
More informationtip conducting surface
PhysicsAndMathsTutor.com 1 1. The diagram shows the tip of a scanning tunnelling microscope (STM) above a conducting surface. The tip is at a potential of 1.0 V relative to the surface. If the tip is sufficiently
More informationSingle Slit Diffraction and Resolving Power. Quantum Mechanics: Blackbody Radiation & Photoelectric Effect. Physics 102: Lecture 22
Physics 102: Lecture 22 Single Slit Diffraction and Resolving Power Quantum Mechanics: Blackbody Radiation & Photoelectric Effect Physics 102: Lecture 22, Slide 1 Diffraction/Huygens principle Huygens:
More informationEarly Atomic Theories and the Origins of Quantum Theory. Chapter 3.1
Early Atomic Theories and the Origins of Quantum Theory Chapter 3.1 What is Matter Made of? People have wondered about the answer to this question for thousands of years Philosophers Matter is composed
More informationThe Photoelectric Effect Can Be Explained Without Quantum Theory
The Photoelectric Effect Can Be Explained Without Quantum Theory Quantum theory is a field of physics that is required to understand An object that absorbs all the radiation can also perfectly emit all
More informationNote on Posted Slides. History of Light. History of Light
Note on Posted Slides These are the slides that I intended to show in class on Wed. Mar. 27, 2013. They contain important ideas and questions from your reading. Due to time constraints, I was probably
More informationUnit 3 Part 1: Quantum Physics. introduce the idea of quanta as a new way of looking at light and sub atomic physical behaviour
In this lesson you will Unit 3 Part 1: Quantum Physics consider and list some of the properties of light and sub atomic particles that were at odds with the classical wave theory of electromagnetic radiation
More informationEE485 Introduction to Photonics. Introduction
EE485 Introduction to Photonics Introduction Nature of Light They could but make the best of it and went around with woebegone faces, sadly complaining that on Mondays, Wednesdays, and Fridays, they must
More informationOrientation: what is physical chemistry about?
1 Orientation: what is physical chemistry about? Chemistry is traditionally divided into a small number of subfields, namely organic, inorganic, analytical and physical chemistry. It s fairly easy to say
More informationPreview. Atomic Physics Section 1. Section 1 Quantization of Energy. Section 2 Models of the Atom. Section 3 Quantum Mechanics
Atomic Physics Section 1 Preview Section 1 Quantization of Energy Section 2 Models of the Atom Section 3 Quantum Mechanics Atomic Physics Section 1 TEKS The student is expected to: 8A describe the photoelectric
More informationLecture Outline Chapter 30. Physics, 4 th Edition James S. Walker. Copyright 2010 Pearson Education, Inc.
Lecture Outline Chapter 30 Physics, 4 th Edition James S. Walker Chapter 30 Quantum Physics Units of Chapter 30 Blackbody Radiation and Planck s Hypothesis of Quantized Energy Photons and the Photoelectric
More informationQuestion from last week
Announcements l Help room hours (1248 BPS) Ian La Valley(TA) Mon 4-6 PM Tues 12-3 PM Wed 6-9 PM Fri 10 AM-noon l LON-CAPA #8 due Nov. 1 l 2 nd hour exam on Tuesday Nov. 6 part of Thursday s lecture will
More informationThe Electromagnetic Spectrum
The Electromagnetic Spectrum A Brief History of Light 1000 AD It was proposed that light consisted of tiny particles Newton Used this particle model to explain reflection and refraction Huygens 1678 Explained
More informationQuantum Model Einstein s Hypothesis: Photoelectric Effect
VISUAL PHYSICS ONLINE MODULE 7 NATURE OF LIGHT Quantum Model Einstein s Hypothesis: Photoelectric Effect The photoelectric effect was discovered by Hertz in 1887 as he confirmed Maxwell s electromagnetic
More informationAlgebra Based Physics
Slide 1 / 108 Slide 2 / 108 Algebra Based Physics Electromagnetic Waves 2015-12-01 www.njctl.org Slide 3 / 108 Table of Contents Click on the topic to go to that section An Abridged "History" of Light
More informationThe Structure of the Atom Review
The Structure of the Atom Review Atoms are composed of PROTONS + positively charged mass = 1.6726 x 10 27 kg NEUTRONS neutral mass = 1.6750 x 10 27 kg ELECTRONS negatively charged mass = 9.1096 x 10 31
More informationElectricity & Optics
Physics 24100 Electricity & Optics Lecture 26 Chapter 33 sec. 1-4 Fall 2017 Semester Professor Koltick Interference of Light Interference phenomena are a consequence of the wave-like nature of light Electric
More informationPhysics for Scientists & Engineers 2
Light as Waves Physics for Scientists & Engineers 2 Spring Semester 2005 Lecture 41! In the previous chapter we discussed light as rays! These rays traveled in a straight line except when they were reflected
More informationSimply Einstein A Mini-Course in Relativity
Simply Einstein A Mini-Course in Relativity Rich Wolfson Prof of Physics Middlebury College Scientific American Travel Bright Horizons 32 July-August 2017 Simply Einstein A Mini-Course in Relativity Rich
More informationThe nature of light. Speed of light. Nature of light. Light - a wave. EM radiation. Beyond the visible. The EM spectrum.
The nature of light (13/10/2009) PHAS 1511 1 / 28 The speed of light Light travels very fast. Early scientists realised during thunderstorms that it travels much much faster than sound. Galileo made an
More informationHistorical Background of Quantum Mechanics
Historical Background of Quantum Mechanics The Nature of Light The Structure of Matter Dr. Sabry El-Taher 1 The Nature of Light Dr. Sabry El-Taher 2 In 1801 Thomas Young: gave experimental evidence for
More informationQuantum Mechanics: Blackbody Radiation, Photoelectric Effect, Wave-Particle Duality
Physics 102: Lecture 22 Quantum Mechanics: Blackbody Radiation, Photoelectric Effect, Wave-Particle Duality Physics 102: Lecture 22, Slide 1 opposite! Physics 102: Lecture 22, Slide 2 Recap. Interference:
More informationCHEMISTRY Topic #1: Atomic Structure and Nuclear Chemistry Fall 2017 Dr. Susan Findlay See Exercises 3.1 to 3.3
CHEMISTRY 1000 Topic #1: Atomic Structure and Nuclear Chemistry Fall 2017 Dr. Susan Findlay See Exercises 3.1 to 3.3 Light: Wave? Particle? Both! Modern models of the atom were derived by studying the
More informationPhysical Optics 2018 Dr. Muwafaq Fadhil Al-Mishlab Third lecture [ Huygens Principle, Interference of light]
Physical Optics 2018 Dr. Muwafaq Fadhil Al-Mishlab Third lecture [ Huygens Principle, Interference of light] 1. Huygens principle Long before people understood the electromagnetic character of light, Christian
More information1/d o +1/d i =1/f. Chapter 24 Wave Optics. The Lens Equation. Diffraction Interference Polarization. The Nature of Light
Chapter 24 Wave Optics Diffraction Interference Polarization 2F h o The Lens Equation 1/d o +1/d i =1/f F F O d o f d i h i Geometrical and Physical Optics Geometrical Optics: The study of optical phenomena
More informationQuantum Mechanics: Blackbody Radiation, Photoelectric Effect, Wave-Particle Duality
Physics 102: Lecture 22 Quantum Mechanics: Blackbody Radiation, Photoelectric Effect, Wave-Particle Duality Physics 102: Lecture 22, Slide 1 State of Late 19 th Century Physics Two great theories Classical
More informationLecture 11 Atomic Structure
Lecture 11 Atomic Structure Earlier in the semester, you read about the discoveries that lead to the proposal of the nuclear atom, an atom of atomic number Z, composed of a positively charged nucleus surrounded
More informationOptics. n n. sin c. sin
Optics Geometrical optics (model) Light-ray: extremely thin parallel light beam Using this model, the explanation of several optical phenomena can be given as the solution of simple geometric problems.
More informationSPH4U UNIVERSITY PHYSICS
SPH4U UNIVERSITY PHYSICS REVOLUTIONS IN MODERN PHYSICS:... L Photons & Momentum (P.624-626) By 1916, Robert Millikan had established that the magnitude of the charge on an electron was 1.60 x 10-19 C.
More informationChapter 5 Electrons In Atoms
Chapter 5 Electrons In Atoms 5.1 Revising the Atomic Model 5.2 Electron Arrangement in Atoms 5.3 Atomic Emission Spectra and the Quantum Mechanical Model 1 Copyright Pearson Education, Inc., or its affiliates.
More informationQuantum Mysteries. Scott N. Walck. September 2, 2018
Quantum Mysteries Scott N. Walck September 2, 2018 Key events in the development of Quantum Theory 1900 Planck proposes quanta of light 1905 Einstein explains photoelectric effect 1913 Bohr suggests special
More informationCHAPTER 3 The Experimental Basis of Quantum Theory
CHAPTER 3 The Experimental Basis of Quantum Theory 3.1 3.2 3.3 3.4 3.5 3.6 3.7 3.8 3.9 Discovery of the X Ray and the Electron Determination of Electron Charge Line Spectra Quantization As far as I can
More informationScience Curriculum Matrix
Science Curriculum Matrix Physics Version 1.0 beta June 2, 2008 This curriculum (core matrix) document will eventually become part of the Science Curriculum Matrix. We envision the Science Curriculum Matrix
More informationSCI403: Physics. Course length: Two semesters. Materials: Physics: Problems and Solutions; materials for laboratory experiments
SCI403: Physics This course provides a comprehensive survey of all key areas: physical systems, measurement, kinematics, dynamics, momentum, energy, thermodynamics, waves, electricity, and magnetism, and
More informationSCH4U: History of the Quantum Theory
SCH4U: History of the Quantum Theory Black Body Radiation When an object is heated, it initially glows red hot and at higher temperatures becomes white hot. This white light must consist of all of the
More informationAnnouncements. A test of General Relativity. Gravitational Radiation. Other Consequences of GR
Announcements HW1: Ch.2-70, 75, 76, 87, 92, 97, 99, 104, 111 *** Lab start-up meeting with TA This Week *** Lab manual is posted on the course web *** Course Web Page *** http://highenergy.phys.ttu.edu/~slee/2402/
More informationThe Electron Cloud. Here is what we know about the electron cloud:
The Electron Cloud Here is what we know about the electron cloud: It contains the subatomic particles called electrons This area accounts for most of the volume of the atom ( empty space) These electrons
More informationRutherford proposed this model of an atom: WHY DON T ELECTRONS GET ATTRACTED TO THE NUCLEUS?
Rutherford proposed this model of an atom: WHY DON T ELECTRONS GET ATTRACTED TO THE NUCLEUS? Chapter 7 Much of the understanding of quantum theory came from our understanding of electromagnetic radiation.
More informationCLASS 12th. Modern Physics-I
CLASS 12th Modern Physics-I Modern Physics-I 01. Dual Nature of Radiation The phenomena such as interference, diffraction and polarization were success-fully explained on the basis of were nature of On
More informationPhysics 1161: Lecture 22
Physics 1161: Lecture 22 Blackbody Radiation Photoelectric Effect Wave-Particle Duality sections 30-1 30-4 Everything comes unglued The predictions of classical physics (Newton s laws and Maxwell s equations)
More informationWAVES AND PARTICLES. (c)
WAVES AND PARTICLES 1. An electron and a proton are accelerated through the same potential difference. The ration of their De Broglie wave length will be -- (a) (b) (c) (d) 1 2. What potential must be
More informationElectromagnetic spectrum Electromagnetic radiation
Chapter 4 Section 1 Electromagnetic spectrum includes all the different wave lengths of radiation. Electromagnetic radiation is a form of energy that exhibits wave like behavior as it travels through space.
More informationWAVE NATURE OF LIGHT
WAVE NATURE OF LIGHT Light is electromagnetic radiation, a type of energy composed of oscillating electric and magnetic fields. The fields oscillate perpendicular to each other. In vacuum, these waves
More informationElectromagnetic Radiation
Electromagnetic Radiation Producing EMR All EMR is produced by accelerating charges Consists of changing electric and magnetic fields Speed of all EMR in vacuum is 3.00 x 10 8 m/s EMR is made up electric
More informationUNIT 7 ATOMIC AND NUCLEAR PHYSICS
1 UNIT 7 ATOMIC AND NUCLEAR PHYSICS PHYS:1200 LECTURE 33 ATOMIC AND NUCLEAR PHYSICS (1) The physics that we have presented thus far in this course is classified as Classical Physics. Classical physics
More informationLECTURE 32: Young's Double-Slit Experiment
Select LEARNING OBJECTIVES: LECTURE 32: Young's Double-Slit Experiment Understand the two models of light; wave model and particle model. Be able to understand the difference between diffraction and interference.
More informationChapter 1. From Classical to Quantum Mechanics
Chapter 1. From Classical to Quantum Mechanics Classical Mechanics (Newton): It describes the motion of a classical particle (discrete object). dp F ma, p = m = dt dx m dt F: force (N) a: acceleration
More informationLecture 8. > Blackbody Radiation. > Photoelectric Effect
Lecture 8 > Blackbody Radiation > Photoelectric Effect *Beiser, Mahajan & Choudhury, Concepts of Modern Physics 7/e French, Special Relativity *Nolan, Fundamentals of Modern Physics 1/e Serway, Moses &
More informationMaterial covered. Review session Sunday, April 14, 3pm, 141 Loomis. Next week s lectures
Exam 3 Monday April 15! Material covered RLC circuits (Lect. 12) Thin film interference (Lect. 21) Discussion 7 10 & HW 7 11 (first half) Review session Sunday, April 14, 3pm, 141 Loomis Sara Rose will
More informationAstronomy The Nature of Light
Astronomy The Nature of Light A. Dayle Hancock adhancock@wm.edu Small 239 Office hours: MTWR 10-11am Measuring the speed of light Light is an electromagnetic wave The relationship between Light and temperature
More information