Physics General Physics II
|
|
|
- Augusta Monica Edwards
- 5 years ago
- Views:
Transcription
1 Physics General Physics II Electricity, Magne/sm, Op/cs, and Modern Physics Review III: Chapter Spring 2017 Semester Prof. Andreas Jung
2 Bubble/Cloud chamber
3 Bubble/Cloud chamber
4 Announcement Final Exam Monday, May 1 st 8:00-10:00 am Room PHYS 203 Covers material from lectures 16-28: PropagaJon of light, refracjon and reflecjon Lenses and mirrors DiffracJon and interference ElectromagneJc waves, polarizajon Quantum opjcs, the Bohr model of hydrogen de Broglie waves Nuclear structure and decay Problems are designed more similar to the 1 st exam, i.e. not that depended on each other adjustment for 2 nd exam is sjll to come.
5 The Law of ReflecBon
6 RefracBon of Light Angles of incidence and transmission are measured with respect to the normal line which is perpendicular to the interface. Incident ray θ 1 θ Index of refracbon (n) 2 Experiment established a mathemajcal relajonship between the angle of incidence and the angle of transmission TransmiZed ray that depends on the parjcular medium.
7 Index of RefracBon The index of refracjon is a property of a parjcular medium. Indices of refracjon have been measured for many materials: The index of refracjon of vacuum is always n=1. The index of refracjon of any material is always n>1.
8 Origin of the RefracBve Index RefracJon is caused by the change in the speed at which light propagates in one material compared to the other. The index of refracjon (n) is the rajo of the speed of light in vacuum (c) to the speed of light in the material (v). n= c/v = m/s/ m/s =1.33
9 Snell s Law (1621)* θ 2 θ 1 n 2 n 1 n 1 sin θ 1 = n 2 sin θ 2 We use the convenjon where light propagates from medium 1 into medium 2. * First reported by Ibn Sahl, Baghdad 984 AD.
10 Total Internal ReflecBon Air, n 2 Water, n 1
11 Prisms Dispersion of Light The refracjve index of most materials depends on the color of light (wavelength). In general, n is larger for violet light and smaller for red light. n 1 sin θ i = n 2 (λ) sin θ r
12 InteracBon of Light with MaRer
13 Where is the Image Located?
14 Image FormaBon s s 1. A ray parallel to the principal o axis is refracted through i the focal point. 2. A ray through the center of the lens is not refracted. 3. A ray through the focal point is refracted parallel to the principal axis. An image is formed because light reflected from a point on the object is observed no mazer where the eye is posijoned. f
15 Sign ConvenBons are Important (Different text books may use different sign convenjons)
16 OpBcs Three ways to describe the properjes of light: Geometric opjcs Light travels in straight lines (rays) Wave opjcs Light is described by waves Quantum opjcs Light is described by parjcles (photons) that sajsfy the laws of quantum mechanics
17 Geometric OpBcs vs Wave OpBcs Water waves passing through a narrow opening Plane wave In both cases, the opening has a dimension comparable to the wavelength of the waves. Sound waves passing through an opening Plane wave ExpectaJon based on ray propagajon In both cases, the wave bends around the edges of the opening.
18 Young s Double Slit Experiment Is this what happens? PredicJon based on the ray nature of light. (not to scale) W
19 ConstrucBve/DestrucBve Interference for two slits Waves that are in-phase give construcjve interference Waves completely out-of-phase give destrucjve interference.
20 Interference
21 Interference
22 Summary so far TWO KEY IDEAS Two ways to produce a phase difference between two waves: 1. One wave travels an extra distance 2. A reflecjon from an opjcally dense material produces a phase change of π upon reflecjon. (A phase change of π is the same as a path length difference of λ/2)
23 Where are the bright spots located? Spacing between slits is d.
24 Maxwell s EquaBons All known fundamental properjes of electricity and magnejsm are summarized by the equajons:
25 Changing B & E fields spread w/o any charges or currents
26
27 An electromagnebc wave
28
29 Example 3: The frequency of an EM wave is 4.5x10 14 Hz. The amplitude of the magnebc field is 6.0x10-4 Tesla.
30
31 Antennas are used to launch EM waves
32 ProperBes of ElectromagneBc Waves
33 Intensity of an EM Wave
34
35 PolarizaBon of Light PolarizaJon is a property of light that describes the orientajon of the E -field oscillajon in the wave.
36
37
38 ElectromagneBc waves Wavelength, λ, describes the color of light: We use the intensity (power per unit area) to describe the amount of light. We can talk about the power per unit wavelength to describe the amount of light of a parjcular color (the spectrum).
39 Blackbody RadiaBon If we increase the temperature, we nojce three things: 1. The total power output from the hole is now greater. 2. The intensity increases at all wavelengths 3. The posijon of the peak intensity shims towards smaller wavelengths.
40 Example The maximum power per wavelength of light from the Sun is at a wavelength of about 510 nm, which corresponds to yellow light. What is the surface temperature of the Sun? Wein s displacement law:
41 The ultraviolet catastrophe In the late 19 th century, no models could explain why the intensity dropped at small wavelengths. This problem became known as the ultraviolet catastrophe.
42 Planck s Hypothesis
43 Photoelectric Effect Long wavelengths (eg, red light) did not eject any electrons, independent of the intensity. Blue light did cause a current to flow The voltage needed to stop the current flow depended on the wavelength This measures the maximum kinejc energy of the electrons when ejected from the surface of the metal The current depended on the intensity
44
45 Review
46 Visible EM RadiaBon From Maxwell in the 1860s, we know that light is an EM wave. In 1888, Hertz showed that EM waves with long wavelengths could be launched and detected using transmizers and receivers (the forerunners of today s communicajon industry). But what about visible light? How is it generated? Consider a few sources of visible light: Sun Fire Oil lamp Heat radiajon (blackbody) Gas discharge tube
47 Hydrogen discharge tube
48 Bohr s model for light emission from H
49 Size of the hydrogen atom
50 Allowed energy levels for the H atom
51 Example
52 Energy of Electron orbits
53
54 What is the de Broglie wave length of a student of 75 kg running to lecture with 1 m/s?
55
56
57 Summary of Quantum Numbers Principal quantum number: Orbital angular momentum quantum number: MagneJc quantum number: Spin magnejc quantum number:
58 Pauli s Exclusion Principle
59 Atomic subshells from lowest to highest energy (approximate)
60
61
62
63
64
65
66
67 Mass/Energy RelaBonship
68 Mass/Energy RelaBonship
69 Nuclear Binding Energy
70
71 Nuclear Fission
72 Solar Energy The sun converts hydrogen to heavier elements through the process of nuclear fusion. The total energy released is MeV. The first step is very slow which is why stars burn for billions of years Protons usually just bounce off each other and don t fuse to form deuterium.
73 Announcement Final Exam Monday, May 1 st 8:00-10:00 am Room PHYS 203 Covers material from lectures 16-28: PropagaJon of light, refracjon and reflecjon Lenses and mirrors DiffracJon and interference ElectromagneJc waves, polarizajon Quantum opjcs, the Bohr model of hydrogen de Broglie waves Nuclear structure and decay
Physics General Physics II
Physics 21900 General Physics II Electricity, Magne/sm and Op/cs Lecture 28 Chapter 28.4-7 Radioac've Decays and Nuclear Reac'ons Spring 2017 Semester Prof. Andreas Jung Announcement Final Exam Monday,
MIDTERM 3 REVIEW SESSION. Dr. Flera Rizatdinova
MIDTERM 3 REVIEW SESSION Dr. Flera Rizatdinova Summary of Chapter 23 Index of refraction: Angle of reflection equals angle of incidence Plane mirror: image is virtual, upright, and the same size as the
U n 3 n Ba Kr (D) Br (C) Kr (B) Rb (E) 94 37
1984 36. The critical angle for a transparent material in air is 30. The index of refraction of the material is most nearly (A) 0.33 (B) 0.50 (C) 1.0 (D) 1.5 (E) 2.0 37. An object is placed as shown in
Accounts for certain objects being colored. Used in medicine (examples?) Allows us to learn about structure of the atom
1.1 Interaction of Light and Matter Accounts for certain objects being colored Used in medicine (examples?) 1.2 Wavelike Properties of Light Wavelength, : peak to peak distance Amplitude: height of the
Physics 1302, Exam 4 Review
c V Andersen, 2006 1 Physics 1302, Exam 4 Review The following is a list of things you should definitely know for the exam, however, the list is not exhaustive. You are responsible for all the material
Light 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
The Nature of Light I: Electromagnetic Waves Spectra Kirchoff s Laws Temperature Blackbody radiation
The Nature of Light I: Electromagnetic Waves Spectra Kirchoff s Laws Temperature Blackbody radiation Electromagnetic Radiation (How we get most of our information about the cosmos) Examples of electromagnetic
WAVES 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
Provide a short and specific definition in YOUR OWN WORDS. Do not use the definition from the book. Electromagnetic Radiation
Name: Provide a short and specific definition in YOUR OWN WORDS. Do not use the definition from the book Additional Notes: Electromagnetic Radiation Electromagnetic Spectrum Wavelength Frequency Photoelectric
5.At what speed is a particle traveling if its kinetic energy is three times its rest energy? A) 0.879c B) 0.918c C) 0.943c D) 0.
1.Two identical light waves, A and B, are emitted from different sources and meet at a point P. The distance from the source of A to the point P is L A ; and the source of B is a distance L B from P. Which
Atomic Structure and the Periodic Table
Atomic Structure and the Periodic Table The electronic structure of an atom determines its characteristics Studying atoms by analyzing light emissions/absorptions Spectroscopy: analysis of light emitted
METR 415. Wed 1/30/2013
METR 415 Wed 1/30/2013 Agenda M415 1/30/13 Review of concepts: speed, wavelength, frequency, wavenumber (1/wavelength) and index of refracjon New material: InteracJon of electromagnejc waves with mamer
Wave Motion and Sound
Wave Motion and Sound 1. A back and forth motion that repeats itself is a a. Spring b. Vibration c. Wave d. Pulse 2. The number of vibrations that occur in 1 second is called a. A Period b. Frequency c.
CHEM 115 Waves, Radiation, and Spectroscopy
CHEM 115 Waves, Radiation, and Spectroscopy Lecture 16 Prof. Sevian 1 Announcements (1) Challenge problem Due today at 2:00 promptly (late papers will not be accepted) - place in the box at the front of
LIGHT AND THE QUANTUM MODEL
LIGHT AND THE QUANTUM MODEL WAVES Wavelength ( ) - length of one complete wave Frequency ( ) - # of waves that pass a point during a certain time period hertz (Hz) = 1/s Amplitude (A) - distance from the
Yellow. Strontium red white. green. yellow violet. green. red. Chapter 4. Arrangement of Electrons in Atoms. Table of Contents
Chapter 4 Arrangement of Electrons in Atoms Table of Contents Section 1 Section 2 Section 3 The Development of a New Atomic Model The Quantum Model of the Atom Electron Configurations Sodium Yellow Strontium
ISP209 Spring Exam #3. Name: Student #:
ISP209 Spring 2014 Exam #3 Name: Student #: Please write down your name and student # on both the exam and the scoring sheet. After you are finished with the exam, please place the scoring sheet inside
Speed of Light in Glass
Experiment (1) Speed of Light in Glass Objective:- This experiment is used to determine the speed of propagation of light waves in glass. Apparatus:- Prism, spectrometer, Halogen lamp source. Theory:-
Electron Configuration
Electron Configuration Plumb Pudding Atomic Model Thomson s atomic model consisted of negatively charged electrons embedded in a ball of positive charge. Diagram pg 81 of chemistry text. Rutherford s Model
Electronic Structure of Atoms. Chapter 6
Electronic Structure of Atoms Chapter 6 Electronic Structure of Atoms 1. The Wave Nature of Light All waves have: a) characteristic wavelength, λ b) amplitude, A Electronic Structure of Atoms 1. The Wave
Quantum Theory and the Electronic Structure of Atoms
Quantum Theory and the Electronic Structure of Atoms Chapter 7 Copyright The McGraw-Hill Companies, Inc. Permission required for reproduction or display. 1 Properties of Waves Wavelength ( ) is the distance
Quantum 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
Chapter 37 Early Quantum Theory and Models of the Atom. Copyright 2009 Pearson Education, Inc.
Chapter 37 Early Quantum Theory and Models of the Atom Planck s Quantum Hypothesis; Blackbody Radiation Photon Theory of Light and the Photoelectric Effect Energy, Mass, and Momentum of a Photon Compton
Chapter 8: Electrons in Atoms Electromagnetic Radiation
Chapter 8: Electrons in Atoms Electromagnetic Radiation Electromagnetic (EM) radiation is a form of energy transmission modeled as waves moving through space. (see below left) Electromagnetic Radiation
Development of the Periodic Table. Chapter 5. Light and the EM Spectrum. Light
Chapter 5 Periodic Table Song Periodicity and Atomic Structure Development of the Periodic Table Mid-1800 s, several scientists placed known elements in order based on different criteria. Mendeleev s and
Exam 2 Development of Quantum Mechanics
PHYS40 (Spring 00) Riq Parra Exam # (Friday, April 1 th, 00) Exam Development of Quantum Mechanics Do NOT write your name on this exam. Write your class ID number on the top right hand corner of each problem
Chapter 5. The Electromagnetic Spectrum. What is visible light? What is visible light? Which of the following would you consider dangerous?
Which of the following would you consider dangerous? X-rays Radio waves Gamma rays UV radiation Visible light Microwaves Infrared radiation Chapter 5 Periodicity and Atomic Structure 2 The Electromagnetic
Light. October 16, Chapter 5: Electrons in Atoms Honors Chemistry. Bohr Model
Chapter 5: Electrons in Atoms Honors Chemistry Bohr Model Niels Bohr, a young Danish physicist and a student of Rutherford improved Rutherford's model. Bohr proposed that an electron is found only in specific
General Chemistry. Contents. Chapter 9: Electrons in Atoms. Contents. 9-1 Electromagnetic Radiation. EM Radiation. Frequency, Wavelength and Velocity
General Chemistry Principles and Modern Applications Petrucci Harwood Herring 8 th Edition Chapter 9: Electrons in Atoms Philip Dutton University of Windsor, Canada N9B 3P4 Contents 9-1 Electromagnetic
2. The figure shows the path of a portion of a ray of light as it passes through three different materials. Note: The figure is drawn to scale.
1. The bending of light as it moves from one medium to another with differing indices of refraction is due to a change in what property of the light? A) amplitude B) period C) frequency D) speed E) color
10. A Kelvin thermometer and a Fahrenheit thermometer both give the same reading for a certain sample. The corresponding Celsius temperature is: A)
Physics 223 practice final exam, Form X!! Fall 2017 Name Write your answers (one per question) on a Scantron form (882E) using a pencil. Write your name above. Return this exam with your scantron upon
A) n L < 1.0 B) n L > 1.1 C) n L > 1.3 D) n L < 1.1 E) n L < 1.3
1. A beam of light passes from air into water. Which is necessarily true? A) The frequency is unchanged and the wavelength increases. B) The frequency is unchanged and the wavelength decreases. C) The
Higher Physics. Particles and Waves
Perth Academy Physics Department Higher Physics Particles and Waves Particles and Waves Homework Standard Model 1 Electric Fields and Potential Difference 2 Radioactivity 3 Fusion & Fission 4 The Photoelectric
Chapter 9: Electrons in Atoms
General Chemistry Principles and Modern Applications Petrucci Harwood Herring 8 th Edition Chapter 9: Electrons in Atoms Philip Dutton University of Windsor, Canada N9B 3P4 Prentice-Hall 2002 Prentice-Hall
Core Concept. PowerPoint Lectures to accompany Physical Science, 8e. Chapter 7 Light. New Symbols for this Chapter 3/29/2011
PowerPoint Lectures to accompany Physical Science, 8e Chapter 7 Light Copyright The McGraw-Hill Companies, Inc. Permission required for reproduction or display. Core Concept Light is electromagnetic radiation
Physics General Physics II. Electricity, Magnetism and Optics Lecture 20 Chapter Wave Optics. Fall 2015 Semester Prof.
Physics 21900 General Physics II Electricity, Magnetism and Optics Lecture 20 Chapter 23.1-2 Wave Optics Fall 2015 Semester Prof. Matthew Jones Announcement Exam #2 will be on Thursday, November 5 th (tomorrow)
Name Final Exam May 1, 2017
Name Final Exam May 1, 217 This test consists of five parts. Please note that in parts II through V, you can skip one question of those offered. Some possibly useful formulas appear below. Constants, etc.
Physics 11 Exam 3 Spring 2016
Physics 11 Exam 3 Spring 2016 Name: Circle the BEST Answer 1 Electromagnetic waves consist of A) compressions and rarefactions of electromagnetic pulses. B) oscillating electric and magnetic fields. C)
PHYSICS 3204 PUBLIC EXAM QUESTIONS (Quantum pt.1)
PHYSICS 3204 PUBLIC EXAM QUESTIONS (Quantum pt.1) NAME: August 2009--------------------------------------------------------------------------------------------------------------------------------- 11 41.
Early Quantum Theory & Models of the Atom (Ch 27) Discovery of electron. Blackbody Radiation. Blackbody Radiation. J. J. Thomson ( )
Early Quantum Theory & Models of the Atom (Ch 27) Discovery of electron Modern physics special relativity quantum theory J. J. Thomson (1856-1940) measured e/m directly set-up was similar to mass spectrometer
2) The number of cycles that pass through a stationary point is called A) wavelength. B) amplitude. C) frequency. D) area. E) median.
Chemistry Structure and Properties 2nd Edition Tro Test Bank Full Download: http://testbanklive.com/download/chemistry-structure-and-properties-2nd-edition-tro-test-bank/ Chemistry: Structure & Properties,
Chapter 6. Electronic Structure of Atoms
Chapter 6 Electronic Structure of Atoms 6.1 The Wave Nature of Light Made up of electromagnetic radiation. Waves of electric and magnetic fields at right angles to each other. Parts of a wave Wavelength
LECTURE # 17 Modern Optics Matter Waves
PHYS 270-SPRING 2011 LECTURE # 17 Modern Optics Matter Waves April 5, 2011 1 Spectroscopy: Unlocking the Structure of Atoms There are two types of spectra, continuous spectra and discrete spectra: Hot,
PARTICLES AND WAVES CHAPTER 29 CONCEPTUAL QUESTIONS
CHAPTER 29 PARTICLES AND WAVES CONCEPTUAL QUESTIONS 1. REASONING AND SOLUTION A monochromatic light source emits photons of a single frequency. According to Equation 29.2, the energy, E, of a single photon
Exam 2. Study Question. Conclusion. Question. Question. study question continued
PS 110A-Hatch-Exam 2 Review - 1 Exam 2 Take exam in Grant Bldg. starting Friday, 13 th, through Monday, 16 th (by 4:00 pm). No late fee associated with Monday, before 4:00. Allow at least 1 hour for exam.
Observation of Atomic Spectra
Observation of Atomic Spectra Introduction In this experiment you will observe and measure the wavelengths of different colors of light emitted by atoms. You will first observe light emitted from excited
It s a wave. It s a particle It s an electron It s a photon. It s light!
It s a wave It s a particle It s an electron It s a photon It s light! What they expected Young s famous experiment using a beam of electrons instead of a light beam. And, what they saw Wave-Particle Duality
EA Notes (Scen 101), Tillery Chapter 7. Light
EA Notes (Scen 101), Tillery Chapter 7 Light Introduction Light is hard to study because you can't see it, you only see it's effects. Newton tried to explain the energy in a light beam as the KE of a particle
Dept. of Physics, MIT Manipal 1
Chapter 1: Optics 1. In the phenomenon of interference, there is A Annihilation of light energy B Addition of energy C Redistribution energy D Creation of energy 2. Interference fringes are obtained using
2) The energy of a photon of light is proportional to its frequency and proportional to its wavelength.
Advanced Chemistry Chapter 13 Review Name Per Show all work Wave Properties 1) Which one of the following is correct? A) ν + λ = c B) ν λ = c C) ν = cλ D) λ = c ν E) νλ = c 2) The energy of a photon of
Prof. Jeff Kenney Class 5 June 1, 2018
www.astro.yale.edu/astro120 Prof. Jeff Kenney Class 5 June 1, 2018 to understand how we know stuff about the universe we need to understand: 1. the spectral analysis of light 2. how light interacts with
Learning Objectives and Worksheet I. Chemistry 1B-AL Fall 2016
Learning Objectives and Worksheet I Chemistry 1B-AL Fall 2016 Lectures (1 2) Nature of Light and Matter, Quantization of Energy, and the Wave Particle Duality Read: Chapter 12, Pages: 524 526 Supplementary
Conceptual Physics. Luis A. Anchordoqui. Department of Physics and Astronomy Lehman College, City University of New York. Lesson VI October 3, 2017
Conceptual Physics Luis A. Anchordoqui Department of Physics and Astronomy Lehman College, City University of New York Lesson VI October 3, 2017 https://arxiv.org/abs/1711.07445 L. A. Anchordoqui (CUNY)
Quantum and Atomic Physics - Multiple Choice
PSI AP Physics 2 Name 1. The Cathode Ray Tube experiment is associated with: (A) J. J. Thomson (B) J. S. Townsend (C) M. Plank (D) A. H. Compton 2. The electron charge was measured the first time in: (A)
CHAPTER 27 Quantum Physics
CHAPTER 27 Quantum Physics Units Discovery and Properties of the Electron Planck s Quantum Hypothesis; Blackbody Radiation Photon Theory of Light and the Photoelectric Effect Energy, Mass, and Momentum
1 The Cathode Rays experiment is associated. with: Millikan A B. Thomson. Townsend. Plank Compton
1 The Cathode Rays experiment is associated with: A B C D E Millikan Thomson Townsend Plank Compton 1 2 The electron charge was measured the first time in: A B C D E Cathode ray experiment Photoelectric
YOUR NAME Sample Final Physics 1404 (Dr. Huang)), Correct answers are underlined.
YOUR NAME Sample Final Physics 1404 (Dr. Huang)), Correct answers are underlined. Useful constants: e=1.6 10-19 C, m e =9.1 10-31 kg, m p =1.67 10-27 kg, ε 0 =8.85 10-12 C 2 /N m 2, c=3 10 8 m/s k e =8.99
FALL 2004 Final Exam, Part A
Physics 152 FALL 2004 Final Exam, Part A Roster No.: Score: 23 pts. possible Exam time limit: 2 hours. You may use a calculator and both sides of 2 sheets of notes, handwritten only. Closed book; no collaboration.
The Final Exam (Exam 4) will be on FRIDAY MAY 11 From 3 5 PM in LR1 VAN
1 --------------------------------------------------------------------------------------------------------------------- 29:006 SPRING 2012 PRACTICE EXAM 4 ---------------------------------------------------------------------------------------------------------------------
The birth of atomic physics and quantum mechanics. Honors Physics Don Rhine
The birth of atomic physics and quantum mechanics Honors Physics Don Rhine Constants & Atomic Data Look inside back cover of book! Speed of Light (vacuum): c = 3.00 x 10 8 m/s Elementary Charge: e - =
PHYS 4 CONCEPT PACKET Complete
PHYS 4 CONCEPT PACKET Complete Written by Jeremy Robinson, Head Instructor Find Out More +Private Instruction +Review Sessions WWW.GRADEPEAK.COM Need Help? Online Private Instruction Anytime, Anywhere
We have already discussed what color is.
The Atom The Electrons in the Atom Reading Assignment: Read the entire chapter. Homework: see the web site for homework. http://web.fccj.org/~smilczan/psc/homework7_11.htm Electrons are the glue that hold
College Physics 10th edition
College Physics 10th edition Raymond A. Serway and Chris Vuille Publisher: Cengage Learning Table of Contents PHY101 covers chapters 1-8 PHY102 covers chapters 9-25 Chapter 1: Introduction 1.1: Standards
WELCOME TO PERIOD 20: RADIANT ENERGY FROM THE SUN
WELCOME TO PERIOD 20: RADIANT ENERGY FROM THE SUN Homework #19 is due today. Midterm 2: Weds, Mar 27, 7:45 8:55 pm (Same room as your midterm 1 exam.) Covers periods 10 19 and videos 3 & 4 Review: Tues,
Chapter 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
Properties of Light and Atomic Structure. Chapter 7. So Where are the Electrons? Electronic Structure of Atoms. The Wave Nature of Light!
Properties of Light and Atomic Structure Chapter 7 So Where are the Electrons? We know where the protons and neutrons are Nuclear structure of atoms (Chapter 2) The interaction of light and matter helps
General Physics (PHY 2140) Lecture 14
General Physics (PHY 2140) Lecture 14 Modern Physics 1. Relativity Einstein s General Relativity 2. Quantum Physics Blackbody Radiation Photoelectric Effect X-Rays Diffraction by Crystals The Compton Effect
NORTHERN ILLINOIS UNIVERSITY PHYSICS DEPARTMENT. Physics 211 E&M and Quantum Physics Spring Lab #9: Diffraction Spectroscopy
NORTHERN ILLINOIS UNIVERSITY PHYSICS DEPARTMENT Physics 211 E&M and Quantum Physics Spring 2018 Lab #9: Diffraction Spectroscopy Lab Writeup Due: Mon/Wed/Thu/Fri, April 30/ May 2/3/4, 2018 Background All
1. Newton's Laws provide a good description of the flight of a baseball because:
1. Newton's Laws provide a good description of the flight of a baseball because: Solution: Newton's laws can be used provided that the velocities are small compared to c (so that relativistic effects can
MOCK cet paper II 2012 (PHYSICS)
MOCK cet paper II 2012 (PHYSICS) 1. The equations of two sound waves are given by Y 1 = 3 sin 100πt and Y 2 = 4 Sin 150 πt. The ratio of the intensities of sound produced in the medium is 1)1:2 2) 1:4
CHEM6416 Theory of Molecular Spectroscopy 2013Jan Spectroscopy frequency dependence of the interaction of light with matter
CHEM6416 Theory of Molecular Spectroscopy 2013Jan22 1 1. Spectroscopy frequency dependence of the interaction of light with matter 1.1. Absorption (excitation), emission, diffraction, scattering, refraction
Lecture 6 - Atomic Structure. Chem 103, Section F0F Unit II - Quantum Theory and Atomic Structure Lecture 6. Lecture 6 - Introduction
Chem 103, Section F0F Unit II - Quantum Theory and Atomic Structure Lecture 6 Light and other forms of electromagnetic radiation Light interacting with matter The properties of light and matter Lecture
Stellar Astrophysics: The Interaction of Light and Matter
Stellar Astrophysics: The Interaction of Light and Matter The Photoelectric Effect Methods of electron emission Thermionic emission: Application of heat allows electrons to gain enough energy to escape
Chapter 7. The Quantum Mechanical Model of the Atom
Chapter 7 The Quantum Mechanical Model of the Atom The Nature of Light:Its Wave Nature Light is a form of electromagnetic radiation composed of perpendicular oscillating waves, one for the electric field
is the minimum stopping potential for which the current between the plates reduces to zero.
Module 1 :Quantum Mechanics Chapter 2 : Introduction to Quantum ideas Introduction to Quantum ideas We will now consider some experiments and their implications, which introduce us to quantum ideas. The
Larbert High School. Quanta and Waves. Homework Exercises ADVANCED HIGHER PHYSICS
Larbert High School ADVANCED HIGHER PHYSICS Quanta and Waves Homework Exercises 3.1 3.6 3.1 Intro to Quantum Theory HW 1. (a) Explain what is meant by term black body. (1) (b) State two observations that
Chapter 6: The Electronic Structure of the Atom Electromagnetic Spectrum. All EM radiation travels at the speed of light, c = 3 x 10 8 m/s
Chapter 6: The Electronic Structure of the Atom Electromagnetic Spectrum V I B G Y O R All EM radiation travels at the speed of light, c = 3 x 10 8 m/s Electromagnetic radiation is a wave with a wavelength
Chapter 7. The Quantum- Mechanical Model of the Atom. Chapter 7 Lecture Lecture Presentation. Sherril Soman Grand Valley State University
Chapter 7 Lecture Lecture Presentation Chapter 7 The Quantum- Mechanical Model of the Atom Sherril Soman Grand Valley State University The Beginnings of Quantum Mechanics Until the beginning of the twentieth
The Structure of the Atom
CHAPTER 5 The Structure of the Atom 5.4 Light and Spectroscopy 460 370 BC 1808 1870 1897 1910 1925 Today Democritus Atomism Dalton Modern atomic theory Crookes Cathode rays Thomson Discovery of the electron
Electronic structure of atoms
Chapter 1 Electronic structure of atoms light photons spectra Heisenberg s uncertainty principle atomic orbitals electron configurations the periodic table 1.1 The wave nature of light Much of our understanding
ESSEX COUNTY COLLEGE Mathematics and Physics Division PHY 203 General Physics III Course Outline
ESSEX COUNTY COLLEGE Mathematics and Physics Division PHY 203 General Physics III Course Outline Course Number & Name: PHY 203 General Physics III Credit Hours: 5.0 Contact Hours: 7.0 Lecture/Lab: 7.0
The Sine Wave. You commonly see waves in the environment. Light Sound Electricity Ocean waves
The Sine Wave Mathematically, a function that represents a smooth oscillation For example, if we drew the motion of how the weight bobs on the spring to the weight we would draw out a sine wave. The Sine
UNIT 4 Electrons in Atoms. Advanced Chemistry 235 Lanphier High School Mr. David Peeler
UNIT 4 Electrons in Atoms Advanced Chemistry 235 Lanphier High School Mr. David Peeler Section 4.1 Models of the Atom OBJECTIVES: Identify the inadequacies in the Rutherford atomic model. Section 4.1 Models
SECTION A Quantum Physics and Atom Models
AP Physics Multiple Choice Practice Modern Physics SECTION A Quantum Physics and Atom Models 1. Light of a single frequency falls on a photoelectric material but no electrons are emitted. Electrons may
Radiation - Electromagnetic Waves (EMR): wave consisting of oscillating electric and magnetic fields that move at the speed of light through space.
Radiation - Electromagnetic Waves (EMR): wave consisting of oscillating electric and magnetic fields that move at the speed of light through space. Photon: a quantum of light or electromagnetic wave. Quantum:
Experiment 7: Spectrum of the Hydrogen Atom
Experiment 7: Spectrum of the Hydrogen Nate Saffold nas2173@columbia.edu Office Hour: Mondays, 5:30-6:30PM INTRO TO EXPERIMENTAL PHYS-LAB 1493/1494/2699 Introduction The physics behind: The spectrum of
Radiation and the Atom
Radiation and the Atom PHYS Lecture Departamento de Física Instituto Superior de Engenharia do Porto cav@isep.ipp.pt Overview SI Units and Prefixes Radiation Electromagnetic Radiation Electromagnetic Spectrum
Physics 1C. End of Chapter 30 Exam Preparationds
Physics 1C End of Chapter 30 Exam Preparationds Radioactive Decay Example The isotope 137 Cs is a standard laboratory source of gamma rays. The half-life of 137 Cs is 30 years. (a) How many 137 Cs atoms
Physics 6C. Final Practice Solutions. Prepared by Vince Zaccone For Campus Learning Assistance Services at UCSB
Physics 6C Final Practice Solutions Use the following information for problems 1 and. A beam of white light with frequency between 4.00 x 10 14 Hz and 7.90 x 10 14 Hz is incident on a sodium surface, which
LC-4: Photoelectric Effect
LC-4: Photoelectric Effect Lab Worksheet Name In this lab you investigate the photoelectric effect, one of the experiments whose explanation by Einstein forced scientists into accepting the ideas of quantum
Quantum Mechanics. Exam 3. Photon(or electron) interference? Photoelectric effect summary. Using Quantum Mechanics. Wavelengths of massive objects
Exam 3 Hour Exam 3: Wednesday, November 29th In-class, Quantum Physics and Nuclear Physics Twenty multiple-choice questions Will cover:chapters 13, 14, 15 and 16 Lecture material You should bring 1 page
Chapter 6 Electronic structure of atoms
Chapter 6 Electronic structure of atoms light photons spectra Heisenberg s uncertainty principle atomic orbitals electron configurations the periodic table 6.1 The wave nature of light Visible light is
Downloaded from
Question 10.1: Monochromatic light of wavelength 589 nm is incident from air on a water surface. What are the wavelength, frequency and speed of (a) reflected, and (b) refracted light? Refractive index
E n = n h ν. The oscillators must absorb or emit energy in discrete multiples of the fundamental quantum of energy given by.
Planck s s Radiation Law Planck made two modifications to the classical theory The oscillators (of electromagnetic origin) can only have certain discrete energies determined by E n = n h ν with n is an
Early 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
Properties of Electromagnetic Radiation Chapter 5. What is light? What is a wave? Radiation carries information
Concepts: Properties of Electromagnetic Radiation Chapter 5 Electromagnetic waves Types of spectra Temperature Blackbody radiation Dual nature of radiation Atomic structure Interaction of light and matter
Bannerman High School Physics Department. Making Accurate Statements. Higher Physics. Quanta and Waves
Bannerman High School Physics Department Making Accurate Statements Higher Physics Quanta and Waves Mandatory Key Area: Particle Physics 1. Use your knowledge of physics to estimate the ratio of the smallest
PY3101 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
LIGHT. Question. Until very recently, the study of ALL astronomical objects, outside of the Solar System, has been with telescopes observing light.
LIGHT Question Until very recently, the study of ALL astronomical objects, outside of the Solar System, has been with telescopes observing light. What kind of information can we get from light? 1 Light
Energy levels and atomic structures lectures chapter one
Structure of Atom An atom is the smallest constituent unit of ordinary matter that has the properties of a element. Every solid, liquid, gas, and plasma is composed of neutral or ionized atoms. Atoms are