Electromagnetic Radiation Wave and Particle Models of Light

Save this PDF as:
 WORD  PNG  TXT  JPG

Size: px
Start display at page:

Download "Electromagnetic Radiation Wave and Particle Models of Light"

Transcription

1 Electromagnetic Radiation minutes Teacher Notes: Victoria Millar BSc (Hons), Dip. Ed, MSc Program Synopsis For hundreds of years, scientists have hypothesised about the structure of light. Two theories evolved one that light is made up of waves; and another that it is actually particles. Various properties of light were explained by either theory, but there were failings in both. Significant breakthroughs came in the early part of the 20 th century, as technology and scientific research developed more thorough and accurate ways of experimenting, recording and analysing results. As a result of the work of scientists like Max Planck, Albert Einstein, Louis de Broglie and Arthur Compton, today, we recognise that both wave and particle theories can apply to light. Address: Website: 10 Mitchell Place Suite 103 White Plains, NY Phone: Fax:

2 Introduction This program looks at the two models of light: the wave model and the particle model. The origin and development of the two models is explored and the physical phenomenon that supports each are examined. The program contains five main sections; Properties of light Particle and wave models Problems and predictions Electromagnetic Waves Photoelectric effect Wave particle duality It is a comprehensive study of how physicists developed an understanding of this difficult topic over the course of several centuries. Program Rationale This program aims to explain the main features and evolution of the wave and particle theories of light. Program Timeline 00:00:00 Introduction 00:00:55 Chapter 1 Properties of light 00:07:13 Chapter 2 Particle and wave models 00:10:42 Chapter 3 Problems & predictions 00:13:30 Chapter 4 Electromagnetic waves 00:16:25 Chapter 5 Photoelectric effect 00:18:48 Chapter 6 Wave particle duality 00:24:02 Conclusion 00:24:41 Credits Related Programs Methods of Heat Transfer Energy Rules The Conservation of Energy and Momentum Light, Phase and Matter ( the Advanced Physics Series) - 2 -

3 Program Worksheet Before the Program 1. Find on the web a picture of the electromagnetic spectrum which shows frequency and wavelength. 2. Different regions of the electromagnetic spectrum are given names such as radio waves, visible light and gamma rays. We utilise these different regions of the electromagnetic spectrum in everyday life. For each of the following regions, investigate one such use. Radiowaves. Microwaves Infrared Visible light Ultraviolet light X-rays Gamma Rays - 3 -

4 During the Program 1. What are the three major properties of light? 2. What characteristics does a model need to make if a useful tool for scientific explanation? 3. What are the two models put forward to assist in explaining light? 4. Draw a diagram showing a beam of light reflecting from a mirror. Label on it the mirror, incident beam, the reflected beam, the normal line, the angle of incidence and the angle of reflection. 5. What is the law of reflection? - 4 -

5 6. Draw a diagram showing a beam of light refracting as it moves from air into glass. Label on it the two materials, the incident beam, the reflected beam, the normal line, the angle of incidence and the angle of refraction. 7. As light enters a medium that is more optically dense does it bend toward or away from the normal? 8. Who put forward the particle model of light and in what year? Who put forward the wave model and in what year? 9. Identify each term in the equation v = f λ 10. Which model explains diffraction? 11. What is destructive and constructive interference? - 5 -

6 12. Which experiment provided the first evidence of the diffraction of light? 13. What are the two components of an electromagnetic wave? 14. When was the photoelectric effect first observed and by whom? 15. When the photoelectric effect occurs, what is emitted from a metallic surface when light is incident upon it? 16. For what sort of elements is f0 lower? 17. Write down and identify the components of Planck's equation. 18. What did Arthur Compton observe when an x-ray photon interacts with an electron? 19. In reference to the above question, circle the correct options in the following sentence. As a result of this interaction, the electron gains/looses energy. Therefore the scattered X-ray photon gains/loses energy and its wavelength increases/decreases. 20. What did debroglie theorise? - 6 -

7 After the Program 1. Use a diffraction kit with your teacher to look at double and single slit interference. 2. Search for photoelectric effect applet on the web. You will find many sites that may be useful in furthering your understanding of the photoelectric effect. 3. Put on some polarised glasses. Look at the glare from a body of water. Tip your head from side to side and see how the intensity of the reflected light varies. 4. Does the law of refraction suggest that light bends when changing medium? 5. Does the speed of light change as it travels from air into glass? 6. Circle which of the following properties of light Huygen's wave model can explain. Reflection Refraction Diffraction 7. Circle which of the following properties of light Newton's particle model can explain. Reflection Refraction Diffraction 8. Will brighter light eject more electrons from a photosensitive surface than dimmer light of the same frequency? 9. Will high-frequency light eject a greater number of electrons than low-frequency light? - 7 -

EM Waves Practice Problems

EM Waves Practice Problems EM Waves Practice Problems PSI AP Physics B Name Multiple Choice 1. Which of the following theories can explain the bending of waves behind obstacles into shadow region? (A) Particle theory of light (B)

More information

Name Date Class ELECTRONS IN ATOMS. Standard Curriculum Core content Extension topics

Name Date Class ELECTRONS IN ATOMS. Standard Curriculum Core content Extension topics 13 ELECTRONS IN ATOMS Conceptual Curriculum Concrete concepts More abstract concepts or math/problem-solving Standard Curriculum Core content Extension topics Honors Curriculum Core honors content Options

More information

Exam 3--S12--PHYS April 2012

Exam 3--S12--PHYS April 2012 ame: Exam 3--S12--PHYS102 30 April 2012 Multiple Choice Identify the choice that best completes the statement or answers the question. 1. Which of the following statements is true? a. Newton believed light

More information

COLLEGE PHYSICS. Chapter 29 INTRODUCTION TO QUANTUM PHYSICS

COLLEGE PHYSICS. Chapter 29 INTRODUCTION TO QUANTUM PHYSICS COLLEGE PHYSICS Chapter 29 INTRODUCTION TO QUANTUM PHYSICS Quantization: Planck s Hypothesis An ideal blackbody absorbs all incoming radiation and re-emits it in a spectrum that depends only on temperature.

More information

PHOTOELECTRIC EFFECT AND DUAL NATURE OF MATTER AND RADIATIONS

PHOTOELECTRIC EFFECT AND DUAL NATURE OF MATTER AND RADIATIONS PHOTOELECTRIC EFFECT AND DUAL NATURE OF MATTER AND RADIATIONS 1. Photons 2. Photoelectric Effect 3. Experimental Set-up to study Photoelectric Effect 4. Effect of Intensity, Frequency, Potential on P.E.

More information

The Electromagnetic Spectrum

The Electromagnetic Spectrum The Electromagnetic Spectrum 1 Look around you. What do you see? You might say "people, desks, and papers." What you really see is light bouncing off people, desks, and papers. You can only see objects

More information

Grade 8 Science Chapter 4 Notes

Grade 8 Science Chapter 4 Notes Grade 8 Science Chapter 4 Notes Optics the science that deals with the properties of light. Light a form of energy that can be detected by the human eye. The History of Optics (3 Scientists): 1. Pythagoras

More information

PRACTICE EXAM IV P202 SPRING 2004

PRACTICE EXAM IV P202 SPRING 2004 PRACTICE EXAM IV P202 SPRING 2004 1. In two separate double slit experiments, an interference pattern is observed on a screen. In the first experiment, violet light (λ = 754 nm) is used and a second-order

More information

Atomic Structure Ron Robertson

Atomic Structure Ron Robertson Atomic Structure Ron Robertson r2 n:\files\courses\1110-20\2010 possible slides for web\atomicstructuretrans.doc I. What is Light? Debate in 1600's: Since waves or particles can transfer energy, what is

More information

Bronx High School of Science Regents Physics

Bronx High School of Science Regents Physics Bronx High School of Science Regents Physics 1. Orange light has a frequency of 5.0 10 14 hertz in a vacuum. What is the wavelength of this light? (A) 1.5 10 23 m (C) 6.0 10 7 m (B) 1.7 10 6 m (D) 2.0

More information

3.1 Photoelectricity AS13. 3.1 Photo-electricity 2

3.1 Photoelectricity AS13. 3.1 Photo-electricity 2 Photo-electricity Einstein s quantum explanation of the photoelectric effect - Einstein used Planck s quantum theory of radiation, (see Revision Card AS1), to explain photoelectric emission. He assumed

More information

emission of light from atoms discrete line spectra - energy levels, Franck-Hertz experiment

emission of light from atoms discrete line spectra - energy levels, Franck-Hertz experiment Introduction Until the early 20 th century physicists used to explain the phenomena in the physical world around them using theories such a mechanics, electromagnetism, thermodynamics and statistical physics

More information

INTEGRATED SCIENCE 1: UNIT 4: PHYSICS

INTEGRATED SCIENCE 1: UNIT 4: PHYSICS INTEGRATED SCIENCE 1: UNIT 4: PHYSICS Sub Unit 1: Waves TEST 2: Electromagnetic Waves Form A MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 1)Electromagnetic

More information

Light as a wave. VCE Physics.com. Light as a wave - 1

Light as a wave. VCE Physics.com. Light as a wave - 1 Light as a wave Huygen s wave theory Newton s corpuscular theory Young s double slit experiment Double slit interference Diffraction Single slit interference The electromagnetic nature of light The electromagnetic

More information

WAVES AND PARTICLES. (v) i.e (vi) The potential difference required to bring an electron of wavelength to rest

WAVES AND PARTICLES. (v) i.e (vi) The potential difference required to bring an electron of wavelength to rest WAVES AND PARTICLES 1. De Broglie wavelength associated with the charges particles (i) The energy of a charged particle accelerated through potential difference q = charge on the particel (ii) Momentum

More information

Light - Geometric Optics. lecture notes and demonstrations

Light - Geometric Optics. lecture notes and demonstrations Light - Geometric Optics Nature of light Reflection Refraction Dispersion A. Karle Physics 202 Nov. 20, 2007 Chapter 35 Total internal reflection lecture notes and demonstrations Demonstrations: Speed

More information

Electromagnetic Radiation

Electromagnetic Radiation Activity 17 Electromagnetic Radiation Why? Electromagnetic radiation, which also is called light, is an amazing phenomenon. It carries energy and has characteristics of both particles and waves. We can

More information

Essential Knowledge 5.G.1: The possible nuclear reactions are constrained by the law of conservation of nucleon number.

Essential Knowledge 5.G.1: The possible nuclear reactions are constrained by the law of conservation of nucleon number. Curriculum Framework Essential Knowledge 5.F.1: The continuity equation describes conservation of mass flow rate in fluids. Examples should include volume rate of flow and mass flow rate. Learning Objective

More information

Eighth Grade Electromagnetic Radiation and Light Assessment

Eighth Grade Electromagnetic Radiation and Light Assessment Eighth Grade Electromagnetic Radiation and Light Assessment 1a. Light waves are the only waves that can travel through. a. space b. solids 1b. Electromagnetic waves, such as light, are the only kind of

More information

Chapter 7: The Quantum-Mechanical Model of the Atom

Chapter 7: The Quantum-Mechanical Model of the Atom C h e m i s t r y 1 A : C h a p t e r 7 P a g e 1 Chapter 7: The Quantum-Mechanical Model of the Atom Homework: Read Chapter 7. Work out sample/practice exercises Suggested Chapter 7 Problems: 37, 39,

More information

Physics 30 Worksheet # 14: Michelson Experiment

Physics 30 Worksheet # 14: Michelson Experiment Physics 30 Worksheet # 14: Michelson Experiment 1. The speed of light found by a Michelson experiment was found to be 2.90 x 10 8 m/s. If the two hills were 20.0 km apart, what was the frequency of the

More information

Physical Science Study Guide Unit 7 Wave properties and behaviors, electromagnetic spectrum, Doppler Effect

Physical Science Study Guide Unit 7 Wave properties and behaviors, electromagnetic spectrum, Doppler Effect Objectives: PS-7.1 Physical Science Study Guide Unit 7 Wave properties and behaviors, electromagnetic spectrum, Doppler Effect Illustrate ways that the energy of waves is transferred by interaction with

More information

Chapter 34 The Wave Nature of Light; Interference. Copyright 2009 Pearson Education, Inc.

Chapter 34 The Wave Nature of Light; Interference. Copyright 2009 Pearson Education, Inc. Chapter 34 The Wave Nature of Light; Interference Units of Chapter 34 Waves versus Particles; Huygens Principle and Diffraction Huygens Principle and the Law of Refraction Interference Young s Double-Slit

More information

AS Revision questions Quantum Phenomena and Electricity

AS Revision questions Quantum Phenomena and Electricity Q1. (a) State what happens in an atom when line spectra are produced. Electrons move from one energy level (or orbit) to a higher one (1 mark) when they absorb energy from an incoming photon or interact

More information

Chapter 6 Electromagnetic Radiation and the Electronic Structure of the Atom

Chapter 6 Electromagnetic Radiation and the Electronic Structure of the Atom Chapter 6 In This Chapter Physical and chemical properties of compounds are influenced by the structure of the molecules that they consist of. Chemical structure depends, in turn, on how electrons are

More information

Lecture 8: Radiation Spectrum. Radiation. Electromagnetic Radiation

Lecture 8: Radiation Spectrum. Radiation. Electromagnetic Radiation Lecture 8: Radiation Spectrum The information contained in the light we receive is unaffected by distance The information remains intact so long as the light doesn t run into something along the way Since

More information

From lowest energy to highest energy, which of the following correctly orders the different categories of electromagnetic radiation?

From lowest energy to highest energy, which of the following correctly orders the different categories of electromagnetic radiation? From lowest energy to highest energy, which of the following correctly orders the different categories of electromagnetic radiation? From lowest energy to highest energy, which of the following correctly

More information

The Nature of Electromagnetic Radiation

The Nature of Electromagnetic Radiation II The Nature of Electromagnetic Radiation The Sun s energy has traveled across space as electromagnetic radiation, and that is the form in which it arrives on Earth. It is this radiation that determines

More information

Arrangement of Electrons in Atoms

Arrangement of Electrons in Atoms CHAPTER 4 PRE-TEST Arrangement of Electrons in Atoms In the space provided, write the letter of the term that best completes each sentence or best answers each question. 1. Which of the following orbital

More information

Investigating electromagnetic radiation

Investigating electromagnetic radiation Investigating electromagnetic radiation Announcements: First midterm is 7:30pm on 2/17/09 Problem solving sessions M3-5 and T3-4,5-6. Homework due at 12:50pm on Wednesday. We are covering Chapter 4 this

More information

PS-7.2 Compare the nature and properties of transverse and longitudinal/compressional mechanical waves.

PS-7.2 Compare the nature and properties of transverse and longitudinal/compressional mechanical waves. PS-7.1 Illustrate ways that the energy of waves is transferred by interaction with matter (including transverse and longitudinal /compressional waves). Understand that a wave is a repeating disturbance

More information

AP Physics B Ch. 23 and Ch. 24 Geometric Optics and Wave Nature of Light

AP Physics B Ch. 23 and Ch. 24 Geometric Optics and Wave Nature of Light AP Physics B Ch. 23 and Ch. 24 Geometric Optics and Wave Nature of Light Name: Period: Date: MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 1) Reflection,

More information

The Early History of Quantum Mechanics

The Early History of Quantum Mechanics Chapter 2 The Early History of Quantum Mechanics In the early years of the twentieth century, Max Planck, Albert Einstein, Louis de Broglie, Neils Bohr, Werner Heisenberg, Erwin Schrödinger, Max Born,

More information

Waves Review Checklist Pulses 5.1.1A Explain the relationship between the period of a pendulum and the factors involved in building one

Waves Review Checklist Pulses 5.1.1A Explain the relationship between the period of a pendulum and the factors involved in building one 5.1.1 Oscillating Systems Waves Review Checklist 5.1.2 Pulses 5.1.1A Explain the relationship between the period of a pendulum and the factors involved in building one Four pendulums are built as shown

More information

Chapter 7. Quantum Theory and Atomic Structure

Chapter 7. Quantum Theory and Atomic Structure Chapter 7. Quantum Theory and Atomic Structure A problem arose in Rutherford s nuclear model. A nucleus and electron attract each other; to remain apart the electron must move. The energy of the electron

More information

The Phenomenon of Photoelectric Emission:

The Phenomenon of Photoelectric Emission: The Photoelectric Effect. The Wave particle duality of light Light, like any other E.M.R (electromagnetic radiation) has got a dual nature. That is there are experiments that prove that it is made up of

More information

3-1. True or False: Different colors of light are waves with different amplitudes. a.) True b.) False X

3-1. True or False: Different colors of light are waves with different amplitudes. a.) True b.) False X 3-1. True or False: Different colors of light are waves with different amplitudes. a.) True b.) False X 3-2. True or False: Different colors of light are waves with different wavelengths. a.) True X b.)

More information

Wave Phenomena. Constructive and Destructive Interference

Wave Phenomena. Constructive and Destructive Interference Wave Phenomena INTERFERENCE PATTERN OF WATER WAVES DIFFRACTION OF LIGHT OFF A COMPACT DISC Constructive and Destructive Interference Constructive interference produces maxima, where crests meet crests

More information

nm cm meters VISIBLE UVB UVA Near IR 200 300 400 500 600 700 800 900 nm

nm cm meters VISIBLE UVB UVA Near IR 200 300 400 500 600 700 800 900 nm Unit 5 Chapter 13 Electrons in the Atom Electrons in the Atom (Chapter 13) & The Periodic Table/Trends (Chapter 14) Niels Bohr s Model Recall the Evolution of the Atom He had a question: Why don t the

More information

Waves Review Checklist Pulses 5.1.1A Explain the relationship between the period of a pendulum and the factors involved in building one

Waves Review Checklist Pulses 5.1.1A Explain the relationship between the period of a pendulum and the factors involved in building one 5.1.1 Oscillating Systems Waves Review hecklist 5.1.2 Pulses 5.1.1A Explain the relationship between the period of a pendulum and the factors involved in building one Four pendulums are built as shown

More information

Electromagnetic Radiation and Atomic Spectra POGIL

Electromagnetic Radiation and Atomic Spectra POGIL Name _Key AP Chemistry Electromagnetic Radiation and Atomic Spectra POGIL Electromagnetic Radiation Model 1: Characteristics of Waves The figure above represents part of a wave. The entire wave can be

More information

The Photoelectric Effect

The Photoelectric Effect The Photoelectric Effect This topic is so important, it deserves its own note set. In 1887, Heinrich Hertz discovered that certain metals emit electrons when light is incident on them. This was the first

More information

Electromagnetic Radiation

Electromagnetic Radiation Electromagnetic Radiation Electromagnetic Radiation What are we looking at when we look at objects? When you look at a basketball, what are you seeing? You re seeing a collection of colors, lines, textures,

More information

Practice Problems (Set #1) Properties of Electromagnetic Radiation. 1. Why don't we notice the wave nature of matter in our everyday experience?

Practice Problems (Set #1) Properties of Electromagnetic Radiation. 1. Why don't we notice the wave nature of matter in our everyday experience? Practice Problems (Set #1) Properties of Electromagnetic Radiation 1. Why don't we notice the wave nature of matter in our everyday experience? Since matter has huge mass, the wavelength will be very large

More information

Atomic Emission Spectra (Teacher Demonstration)

Atomic Emission Spectra (Teacher Demonstration) SKILL FOCUS Analyzing and interpreting Communicating results Atomic Emission Spectra (Teacher Demonstration) When a high voltage current is passed through a glass tube that contains hydrogen gas at low

More information

Lecture 1. Phys 322. Optics

Lecture 1. Phys 322. Optics Lecture 1 Phys 322 Optics Historical introduction Lecture 1 Optics in Ancient History A mirror was discovered in workers' quarters near the tomb of Pharaoh Sesostris II (1900 BCE). Ancient Greeks (500-300

More information

Light and Other Radiations

Light and Other Radiations Light and Other Radiations Visible light is a form of electromagnetic radiation. X-rays, infrared, microwaves and gamma rays are other forms of this type of radiation which make up the electromagnetic

More information

Light, Light Bulbs and the Electromagnetic Spectrum

Light, Light Bulbs and the Electromagnetic Spectrum Light, Light Bulbs and the Electromagnetic Spectrum Spectrum The different wavelengths of electromagnetic waves present in visible light correspond to what we see as different colours. Electromagnetic

More information

Periodic Wave Phenomena

Periodic Wave Phenomena Name: Periodic Wave Phenomena 1. The diagram shows radar waves being emitted from a stationary police car and reflected by a moving car back to the police car. The difference in apparent frequency between

More information

Ch 6: Light and Telescope. Wave and Wavelength. Wavelength, Frequency and Speed. v f

Ch 6: Light and Telescope. Wave and Wavelength. Wavelength, Frequency and Speed. v f Ch 6: Light and Telescope Wave and Wavelength..\..\aTeach\PhET\wave-on-a-string_en.jar Wavelength, Frequency and Speed Wave and Wavelength A wave is a disturbance that moves through a medium or through

More information

Tools of Astronomy Notes

Tools of Astronomy Notes Tools of Astronomy Notes Light is a form of electromagnetic radiation. Scientists call the light you can see visible light. If you shine white light through a prism, the light spreads out to make a range

More information

Today. Electromagnetic Radiation. Light & beyond. Thermal Radiation. Wien & Stefan-Boltzmann Laws

Today. Electromagnetic Radiation. Light & beyond. Thermal Radiation. Wien & Stefan-Boltzmann Laws Today Electromagnetic Radiation Light & beyond Thermal Radiation Wien & Stefan-Boltzmann Laws 1 Electromagnetic Radiation aka Light Properties of Light are simultaneously wave-like AND particle-like Sometimes

More information

FORCE ON MOVING CHARGE

FORCE ON MOVING CHARGE FORCE ON MOVING CHARGE F = qvb perpendicular to both v and B. An important advance was made when it was discovered that a B field exerts a force on a moving charged particle. This is an important clue.

More information

After a wave passes through a medium, how does the position of that medium compare to its original position?

After a wave passes through a medium, how does the position of that medium compare to its original position? Light Waves Test Question Bank Standard/Advanced Name: Question 1 (1 point) The electromagnetic waves with the highest frequencies are called A. radio waves. B. gamma rays. C. X-rays. D. visible light.

More information

Light is a type of electromagnetic (EM) radiation, and light has energy. Many kinds of light exist. Ultraviolet (UV) light causes skin to tan or burn.

Light is a type of electromagnetic (EM) radiation, and light has energy. Many kinds of light exist. Ultraviolet (UV) light causes skin to tan or burn. Light and radiation Light is a type of electromagnetic (EM) radiation, and light has energy. Many kinds of light exist. Ultraviolet (UV) light causes skin to tan or burn. Infrared (IR) light is used in

More information

Chapter 25 Electromagnetic Waves

Chapter 25 Electromagnetic Waves Chapter 25 Electromagnetic Waves Units of Chapter 25 The Production of Electromagnetic Waves The Propagation of Electromagnetic Waves The Electromagnetic Spectrum Energy and Momentum in Electromagnetic

More information

Diffraction. Interference 4/29/15

Diffraction. Interference 4/29/15 Chapter 29: Light Waves Interference Light waves interfere with each other They can be said to be in phase or out of phase with each other In phase: amplitudes reinforce each other Our of phase: amplitudes

More information

Name: Exampro GCSE Physics. Class: P1 Waves Self Study Questions - Higher tier. Author: Date: Time: 74. Marks: 74. Comments: Page 1 of 27

Name: Exampro GCSE Physics. Class: P1 Waves Self Study Questions - Higher tier. Author: Date: Time: 74. Marks: 74. Comments: Page 1 of 27 Exampro GCSE Physics P Waves Self Study Questions - Higher tier Name: Class: Author: Date: Time: 74 Marks: 74 Comments: Page of 27 Q. All radio waves travel at 300 000 000 m/s in air. (i) Give the equation

More information

People s Physics book

People s Physics book The Big Idea Quantum Mechanics, discovered early in the 20th century, completely shook the way physicists think. Quantum Mechanics is the description of how the universe works on the very small scale.

More information

Science In Action 8 Unit C - Light and Optical Systems. 1.1 The Challenge of light

Science In Action 8 Unit C - Light and Optical Systems. 1.1 The Challenge of light 1.1 The Challenge of light 1. Pythagoras' thoughts about light were proven wrong because it was impossible to see A. the light beams B. dark objects C. in the dark D. shiny objects 2. Sir Isaac Newton

More information

21 The Nature of Electromagnetic Waves

21 The Nature of Electromagnetic Waves 21 The Nature of Electromagnetic Waves When we left off talking about the following circuit: I E v = c B we had recently closed the switch and the wire was creating a magnetic field which was expanding

More information

physics 112N interference and diffraction

physics 112N interference and diffraction physics 112N interference and diffraction the limits of ray optics shadow of the point of a pin physics 112N 2 the limits of ray optics physics 112N 3 the limits of ray optics physics 112N 4 this is how

More information

Chapter 2: Electromagnetic Radiation Radiant Energy I

Chapter 2: Electromagnetic Radiation Radiant Energy I Chapter 2: Electromagnetic Radiation Radiant Energy I Goals of Period 2 Section 2.1: To introduce electromagnetic radiation Section 2.2: To discuss the wave model of radiant energy Section 2.3: To describe

More information

Introduction to Waves. Essential Question: What are the characteristics of mechanical and electromagnetic waves? (S8P4a,d,f)

Introduction to Waves. Essential Question: What are the characteristics of mechanical and electromagnetic waves? (S8P4a,d,f) Introduction to Waves Essential Question: What are the characteristics of mechanical and electromagnetic waves? (S8P4a,d,f) Use the PowerPoint to fill in the Waves graphic organizer as we discuss the characteristics

More information

Prerequisites: Successful completion of Earth Science, Living Environment, & Chemistry.

Prerequisites: Successful completion of Earth Science, Living Environment, & Chemistry. Physics Honors Course Honors Physics Overview of Course Physics H 4410 Full Year 1 credit Grades 11, 12 Prerequisites: Successful completion of Earth Science, Living Environment, & Chemistry. Honors policy

More information

CHAPTER 3: Light and Telescopes

CHAPTER 3: Light and Telescopes CHAPTER 3: Light and Telescopes WHAT DO YOU THINK? What is light? Which type of electromagnetic radiation is most dangerous to life? What is the main purpose of a telescope? Why do stars twinkle? What

More information

Light. (Material taken from: Optics, by E. Hecht, 4th Ed., Ch: 1,2, 3, 8)

Light. (Material taken from: Optics, by E. Hecht, 4th Ed., Ch: 1,2, 3, 8) (Material taken from: Optics, by E. Hecht, 4th Ed., Ch: 1,2, 3, 8) is an Electromagnetic (EM) field arising from the non-uniform motion of charged particles. It is also a form of EM energy that originates

More information

Physics Open House. Faraday's Law and EM Waves Change in the magnetic field strength in coils generates a current. Electromagnetic Radiation

Physics Open House. Faraday's Law and EM Waves Change in the magnetic field strength in coils generates a current. Electromagnetic Radiation Electromagnetic Radiation (How we get most of our information about the cosmos) Examples of electromagnetic radiation: Light Infrared Ultraviolet Microwaves AM radio FM radio TV signals Cell phone signals

More information

Introduction to X-ray Diffraction (XRD) Learning Activity

Introduction to X-ray Diffraction (XRD) Learning Activity Introduction to X-ray Diffraction (XRD) Learning Activity Basic Theory: Diffraction and Bragg s Law Take a look at the diagram below: X-rays Interacting with Material A Scatter Single Particle B Diffraction

More information

Section 1 Electromagnetic Waves

Section 1 Electromagnetic Waves Section 1 Electromagnetic Waves What are electromagnetic waves? What do microwaves, cell phones, police radar, television, and X-rays have in common? All of them use electromagnetic waves Electromagnetic

More information

Activity Description: Students correctly complete the Everyday Examples of Thermodynamics matching pieces and the Student Worksheet.

Activity Description: Students correctly complete the Everyday Examples of Thermodynamics matching pieces and the Student Worksheet. Activity Description: Students correctly complete the Everyday Examples of Thermodynamics matching pieces and the Student Worksheet. Materials: 1 Student Attachment: Student Worksheet (per student) 1 Student

More information

Q1. The diagram below shows the range of wavelengths and frequencies for all the types of radiation in the electromagnetic spectrum.

Q1. The diagram below shows the range of wavelengths and frequencies for all the types of radiation in the electromagnetic spectrum. Q. The diagram below shows the range of wavelengths and frequencies for all the types of radiation in the electromagnetic spectrum. X rays, which have frequencies in the range 0 8 0 2 Hz are already marked

More information

5. The Nature of Light. Does Light Travel Infinitely Fast? EMR Travels At Finite Speed. EMR: Electric & Magnetic Waves

5. The Nature of Light. Does Light Travel Infinitely Fast? EMR Travels At Finite Speed. EMR: Electric & Magnetic Waves 5. The Nature of Light Light travels in vacuum at 3.0. 10 8 m/s Light is one form of electromagnetic radiation Continuous radiation: Based on temperature Wien s Law & the Stefan-Boltzmann Law Light has

More information

STAAR Science Tutorial 30 TEK 8.8C: Electromagnetic Waves

STAAR Science Tutorial 30 TEK 8.8C: Electromagnetic Waves Name: Teacher: Pd. Date: STAAR Science Tutorial 30 TEK 8.8C: Electromagnetic Waves TEK 8.8C: Explore how different wavelengths of the electromagnetic spectrum such as light and radio waves are used to

More information

Does Quantum Mechanics Make Sense? Size

Does Quantum Mechanics Make Sense? Size Does Quantum Mechanics Make Sense? Some relatively simple concepts show why the answer is yes. Size Classical Mechanics Quantum Mechanics Relative Absolute What does relative vs. absolute size mean? Why

More information

MECHANICS PROJECTILE MOTION

MECHANICS PROJECTILE MOTION 1 MECHANICS PROJECTILE MOTION When an object is in free fall, the object is at an acceleration of 10m/s down Displacement is the straight line from start to finish in that direction Projectile: An object

More information

CH 35. Interference. A. Interference of light waves, applied in many branches of science.

CH 35. Interference. A. Interference of light waves, applied in many branches of science. CH 35 Interference [SHIVOK SP212] March 17, 2016 I. Optical Interference: A. Interference of light waves, applied in many branches of science. B. The blue of the top surface of a Morpho butterfly wing

More information

Waves Sound and Light

Waves Sound and Light Waves Sound and Light r2 c:\files\courses\1710\spr12\wavetrans.doc Ron Robertson The Nature of Waves Waves are a type of energy transmission that results from a periodic disturbance (vibration). They are

More information

Physics/Science *P41764A0120* Edexcel GCSE P41764A. Unit P1: Universal Physics. Higher Tier. Thursday 8 November 2012 Morning Time: 1 hour

Physics/Science *P41764A0120* Edexcel GCSE P41764A. Unit P1: Universal Physics. Higher Tier. Thursday 8 November 2012 Morning Time: 1 hour Write your name here Surname Other names Edexcel GCSE Centre Number Physics/Science Unit P1: Universal Physics Thursday 8 November 2012 Morning Time: 1 hour You must have: Calculator, ruler Candidate Number

More information

Nuclear Fusion and Radiation

Nuclear Fusion and Radiation Nuclear Fusion and Radiation Lecture 2 (Meetings 3 & 4) Eugenio Schuster schuster@lehigh.edu Mechanical Engineering and Mechanics Lehigh University Nuclear Fusion and Radiation p. 1/40 Modern Physics Concepts

More information

Electromagnetic Radiation

Electromagnetic Radiation Electromagnetic Radiation Wave - a traveling disturbance, e.g., displacement of water surface (water waves), string (waves on a string), or position of air molecules (sound waves). [ π λ ] h = h sin (

More information

Comparing Colors ACTIVITY OVERVIEW NGSS RATIONALE NGSS CORRELATION

Comparing Colors ACTIVITY OVERVIEW NGSS RATIONALE NGSS CORRELATION 10 Comparing Colors LABORATORY 1 class session ACTIVITY OVERVIEW NGSS RATIONALE In this activity, students first learn that visible light can be separated into different colors. Students then conduct an

More information

Episode 314: Electromagnetic radiation

Episode 314: Electromagnetic radiation Episode 314: Electromagnetic radiation This episode extends students understanding of the nature of different types of electromagnetic radiation, and considers their shared nature. Summary Demonstration:

More information

Preview of Period 3: Electromagnetic Waves Radiant Energy II

Preview of Period 3: Electromagnetic Waves Radiant Energy II Preview of Period 3: Electromagnetic Waves Radiant Energy II 3.1 Radiant Energy from the Sun How is light reflected and transmitted? What is polarized light? 3.2 Energy Transfer with Radiant Energy How

More information

Lecture 7: Light Waves. Newton s Laws of Motion (1666) Newton s First Law of Motion

Lecture 7: Light Waves. Newton s Laws of Motion (1666) Newton s First Law of Motion Lecture 7: Light Waves Isaac Newton (1643-1727) was born in the year Galileo died He discovered the Law of Gravitation in 1665 He developed the Laws of Mechanics that govern all motions In order to solve

More information

Phys 2310 Wed. Sept. 21, 2016 Today s Topics

Phys 2310 Wed. Sept. 21, 2016 Today s Topics Phys 2310 Wed. Sept. 21, 2016 Today s Topics - Brief History of Light & Optics Electromagnetic Spectrum Electromagnetic Spectrum Visible, infrared & ultraviolet Wave/Particle Duality (waves vs. photons)

More information

Chapter 24. Wave Optics

Chapter 24. Wave Optics Chapter 24 Wave Optics Wave Optics The wave nature of light is needed to explain various phenomena. Interference Diffraction Polarization The particle nature of light was the basis for ray (geometric)

More information

Wave Properties of Electromagnetic Radiation

Wave Properties of Electromagnetic Radiation Wave Properties of Electromagnetic Radiation Two options are available for analytical utility when an analyte interacts with a beam of electromagnetic radiation in an instrument 1. We can monitor the changes

More information

Polarization and Photon Concept A. Polarization

Polarization and Photon Concept A. Polarization Polarization and Photon Concept A. Polarization Physics 102 Workshop #8A Name: Lab Partner(s): Instructor: Time of Workshop: General Instructions Workshop exercises are to be carried out in groups of three.

More information

LIGHT AND ELECTROMAGNETIC RADIATION

LIGHT AND ELECTROMAGNETIC RADIATION LIGHT AND ELECTROMAGNETIC RADIATION Light is a Wave Light is a wave motion of radiation energy in space. We can characterize a wave by three numbers: - wavelength - frequency - speed Shown here is precisely

More information

GCSE. Core Gateway Science B P1: Energy from the Home. We are what we repeatedly do. Excellence, therefore, is not an act but a habit

GCSE. Core Gateway Science B P1: Energy from the Home. We are what we repeatedly do. Excellence, therefore, is not an act but a habit GCSE Core Gateway Science B P1: Energy from the Home We are what we repeatedly do. Excellence, therefore, is not an act but a habit Unit Page Completed By 1a Heating Houses 80 1b Keeping Homes Warm 83

More information

Exam 4--PHYS 102--S14

Exam 4--PHYS 102--S14 Class: Date: Exam 4--PHYS 102--S14 Multiple Choice Identify the choice that best completes the statement or answers the question. 1. A current goes through a loop, which is allowed to rotate on an axis,

More information

PRACTICE Q6--Quiz 6, Ch15.1 &15.2 Interference & Diffraction

PRACTICE Q6--Quiz 6, Ch15.1 &15.2 Interference & Diffraction Name: Class: Date: ID: A PRACTICE Q6--Quiz 6, Ch5. &5. Interference & Diffraction Multiple Choice Identify the choice that best completes the statement or answers the question.. The trough of the sine

More information

1(a) Name the charge carriers responsible for electric current in a metal and in an electrolyte.

1(a) Name the charge carriers responsible for electric current in a metal and in an electrolyte. Physics A Unit: G482: Electrons, Waves and Photons 1(a) Name the charge carriers responsible for electric current in a metal and in an electrolyte. Electrons are the charged particles in a metal. Cations

More information

v = fλ PROGRESSIVE WAVES 1 Candidates should be able to :

v = fλ PROGRESSIVE WAVES 1 Candidates should be able to : PROGRESSIVE WAVES 1 Candidates should be able to : Describe and distinguish between progressive longitudinal and transverse waves. With the exception of electromagnetic waves, which do not need a material

More information

Rigorous Curriculum Design Unit Planning Organizer

Rigorous Curriculum Design Unit Planning Organizer 1 Rigorous Curriculum Design Unit Planning Organizer Subject(s) Science Grade/Course 6 Unit of Study Forces and Motion Pacing Minimum 15 days, Maximum 20 days Priority Essential Standards 6.P.1 Understand

More information

Chapter 2 Electromagnetic Radiation

Chapter 2 Electromagnetic Radiation Chapter 2 Electromagnetic Radiation Bohr demonstrated that information about the structure of hydrogen could be gained by observing the interaction between thermal energy (heat) and the atom. Many analytical

More information

Atomic Emission Spectra

Atomic Emission Spectra Atomic Emission Spectra Objectives The objectives of this laboratory are as follows: To build and calibrate a simple box spectroscope capable of measuring wavelengths of visible light. To use this spectroscope

More information

CHAPTER 16: Quantum Mechanics and the Hydrogen Atom

CHAPTER 16: Quantum Mechanics and the Hydrogen Atom CHAPTER 16: Quantum Mechanics and the Hydrogen Atom Waves and Light Paradoxes in Classical Physics Planck, Einstein, and Bohr Waves, Particles, and the Schrödinger equation The Hydrogen Atom Questions

More information