Chapter 27: Light. What is light?
|
|
- Gwendolyn Harmon
- 6 years ago
- Views:
Transcription
1 Chapter 27: Light What is light?
2 Scientists first theorized light was a wave as it behaved with a wave properties, i.e. diffraction and interference.
3 In 1905, Einstein realized that light was behaving as if it was composed of tiny particles (called photons) and that the energy of each particle was proportional to the frequency (leading to the photoelectric effect)
4 Light travels at approximately: 300,000,000 meters per second, or 186,000 miles per second. Therefore, light can travel: from the Sun to the Earth in 500 seconds (8¼ min) from the Sun to Pluto in 5½ hours from Earth to Mars: 3 minutes (closest) to 22 minutes (farthest) So the "delay" in communication with Mars is between 6 minutes and 44 minutes.
5 A light year is the distance light can travel in a year 1 Light Year 3.0x108 m sec
6 Imagine what the world would be like to a creature that can only see a tiny portion of the light spectrum and is blind to the rest.
7 Imagine what the world would be like to a creature that can only see a tiny portion of the light spectrum and is blind to the rest. That is us!
8 Electromagnetic Waves Light is created by moving electric charges, electrons in the atom. This energy is partially electric and partially magnetic, and therefore is called an electromagnetic wave. Visible light (what we can see) makes up a VERY SMALL (0.1%) part of the whole electromagnetic spectrum.
9
10 Chapter 27: Light (cont'd) Polarization Light travels in waves. This wave is also transverse which can be demonstrated through the effect knows as polarization.
11 Chapter 27: Light (cont'd) Polarization (cont'd) With transverse waves, they vibrate in a specific direction, i.e. a rope going up and down. However, most light is unpolarized because the light being emitted is randomly oriented, i.e. multiple waves with different orientations. But if a polarizing filter is introduced, the light will either pass through or be blocked, depending on its orientation.
12 Chapter 27: Light (cont'd) Polarization (cont'd) Look at these pictures images through polarized and unpolarized lenses. What effect does polarization have on the images. Polarization applet
13 Polarization 3D viewing The 3D viewing is created by using either passive or active polarization. In active polarization works by turning on the view for one eye while turning off the other and alternating very rapidly. The brain recombines the images into one with depth. In passive polarization each lens is polarized to a particular direction. Two video sources with the same image are each polarized to a different direction but are projected onto the same screen. Each lens will "see" the image for the polarization that matches it. Again, the brain will recombine the images into one that has depth. Active vs. Passive Polarization ( pm)
14 Chapter 27: Light (cont'd) Light and Materials Remember, forced vibrations occur when one source causes a different source to vibrate at the same frequency, i.e. remember the sound chambers in our "Sound Lab". Since light is energy carried in a wave, when it strikes materials, the results vary greatly. How the material responds depends on the frequency of the light and the natural frequency of the electrons in the material.
15 Chapter 27: Light (cont'd) Light and Materials (cont'd) Some materials are transparent, meaning light passes through the material without any significant loss, i.e. water and glass. Although glass is transparent to visible light, it is NOT transparent to light in the infrared and ultraviolet frequencies.
16 Chapter 27: Light (cont'd) Light and Materials (cont'd) However, some materials allow some light to pass through, but not all. In this case, these materials partially absorb the frequencies of visible light with only some reemission, making them translucent.
17 Chapter 27: Light (cont'd) Light and Materials (cont'd) When materials absorb light without reemission, then no light passes through them, and they are called opaque.
18 Video Tour of the Electromagnetic Spectrum Electromagnetic Spectrum video (5:19) Radio waves video (3:58) Microwaves video (3:22) Infrared video (5:22) Visible light video (4:49) Ultraviolet Rays video (3:41) X Rays video (2:49) Gamma Rays video (3:41)
Wave - Particle Duality of Light
Properties of Light Objectives Explain wave-particle duality State the speed of light Describe electromagnetic waves and the electromagnetic spectrum Explain how light interacts with transparent and opaque
More informationLight is an electromagnetic wave (EM)
What is light? Light is a form of energy. Light travels in a straight line Light speed is 3.0 x 10 8 m/s Light is carried by photons Light can travel through a vacuum Light is a transverse wave Light is
More informationASTRONOMY 161. Introduction to Solar System Astronomy. Class 9
ASTRONOMY 161 Introduction to Solar System Astronomy Class 9 Light Monday, January 29 Look, but don t touch. - Astronomers Motto Light: Key Concepts (1) Visible light is just one form of electromagnetic
More informationSECTION 3 & 4 LIGHT WAVES & INFORMATION TRANSFER
SECTION 3 & 4 LIGHT WAVES & INFORMATION TRANSFER Light Waves Light is a type of energy that travels as waves. Light is different than other waves because it does not need matter to travel. Light waves
More informationElectromagnetic Waves
4/15/12 Chapter 26: Properties of Light Field Induction Ok, so a changing magnetic field causes a current (Faraday s law) Why do we have currents in the first place? electric fields of the charges Changing
More informationSound Waves. Sound waves are caused by vibrations and carry energy through a medium
Chapter 16 Sound Waves Sound waves are caused by vibrations and carry energy through a medium An example of a compressional wave Waves can spread out in all directions Their speed depends on its medium
More informationChapter 26: Properties of Light
Lecture Outline Chapter 26: Properties of Light This lecture will help you understand: Electromagnetic Waves The Electromagnetic Spectrum Transparent Materials Opaque Materials Seeing Light The Eye Electromagnetic
More information10.1 Properties of Light
10.1 Properties of Light Every time you see, you are using light. You can t see anything in complete darkness! Whether you are looking at a light bulb, or a car, or this book, light brings information
More informationName Class Date. What two models do scientists use to describe light? What is the electromagnetic spectrum? How can electromagnetic waves be used?
CHAPTER 16 12 SECTION Sound and Light The Nature of Light KEY IDEAS As you read this section, keep these questions in mind: What two models do scientists use to describe light? What is the electromagnetic
More informationPhysics Worksheet Sound and Light Section: Name:
Do Now: What is common between sound and light? What are the differences between sound and light? Sound Waves 1. Define Sound Waves from three different perspectives 6. Speed of sound =. Formula: v =.
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 informationChapter 26. Properties of Light
Chapter 26 Properties of Light James Clerk Maxwell discovered that light is composed of a. electromagnetic waves. b. ultrasonic waves. c. infrasonic waves. d. electron vibrations. James Clerk Maxwell discovered
More information4.2 Properties of Visible Light Date: (pages )
4.2 Properties of Visible Light Date: (pages 144-149) Visible light is a mixture of all the colours of the rainbow. A prism refracts light separating the colours. A second prism can recombine the colours
More informationSound and Light. Light
Sound and Light Light What do you think? Read the two statements below and decide whether you agree or disagree with them. Place an A in the Before column if you agree with the statement or a D if you
More informationName Date Class _. Please turn to the section titled The Nature of Light.
Please turn to the section titled The Nature of Light. In this section, you will learn that light has both wave and particle characteristics. You will also see that visible light is just part of a wide
More informationRevision checklist SP4 5. SP4 Waves. SP4a Describing waves. SP4b Wave speeds. SP4c Refraction
SP4 Waves SP4a Describing waves Recall that waves transfer energy and information but do not transfer matter. Describe waves using the terms frequency, wavelength, amplitude, period and velocity. Describe
More informationName Class Date. a. Light is a wave. 2. Empedocles. b. Light consists of tiny 3. Euclid
Exercises 27.1 Early Concepts of (page 533) Scientist Idea About 1. Einstein a. is a wave. 2. Empedocles b. consists of tiny 3. Euclid particles. 4. Huygens c. Vision results from streamers or filaments
More informationRevision checklist. Step Learning outcome Had a look Nearly there Nailed it! Step Learning outcome Had a look Nearly there Nailed it!
SP4 Waves SP4a Describing waves Step Learning outcome Had a look Nearly there Nailed it Recall that waves transfer energy and information but do not transfer matter. Describe waves using the terms frequency,
More informationGrade 8 Science: Unit 3-Optics Chapter 4: Properties of Light
Grade 8 Science: Unit 3-Optics Chapter 4: Properties of Light Key Terms: Microscope, telescope, amplitude, crest, energy, force, frequency, hertz, medium, transverse wave, trough, wave, wavelength, reflection,
More informationThe Electromagnetic Spectrum
The Electromagnetic Spectrum 1 of 19 Boardworks Ltd 2016 The Electromagnetic Spectrum 2 of 19 Boardworks Ltd 2016 Detecting waves beyond the visible spectrum 3 of 19 Boardworks Ltd 2016 Invisible light
More informationChapter 34. Electromagnetic Waves
Chapter 34 Electromagnetic Waves Waves If we wish to talk about electromagnetism or light we must first understand wave motion. If you drop a rock into the water small ripples are seen on the surface of
More informationPhysics 201. Professor P. Q. Hung. 311B, Physics Building. Physics 201 p. 1/3
Physics 201 p. 1/3 Physics 201 Professor P. Q. Hung 311B, Physics Building Physics 201 p. 2/3 What are electromagnetic waves? Electromagnetic waves consist of electric fields and magnetic fields which
More informationRecall: The Importance of Light
Key Concepts: Lecture 19: Light Light: wave-like behavior Light: particle-like behavior Light: Interaction with matter - Kirchoff s Laws The Wave Nature of Electro-Magnetic Radiation Visible light is just
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 informationASTR-1010: Astronomy I Course Notes Section IV
ASTR-1010: Astronomy I Course Notes Section IV Dr. Donald G. Luttermoser Department of Physics and Astronomy East Tennessee State University Edition 2.0 Abstract These class notes are designed for use
More informationElectromagnetic Radiation
Electromagnetic Radiation aka Light Properties of Light are simultaneously wave-like AND particle-like Sometimes it behaves like ripples on a pond (waves). Sometimes it behaves like billiard balls (particles).
More informationGrade 5. Practice Test. What is Light? How Light Behaves. Photo Credits (in order of appearance): Alexandr Mitiuc/Dreamstime.com
Name Date Grade 5 What is Light? How Light Behaves Photo Credits (in order of appearance): Alexandr Mitiuc/Dreamstime.com Today you will read two passages. Read these sources carefully to gather information
More informationThe Electromagnetic Spectrum
The Electromagnetic Spectrum Learning Objectives! What is Electromagnetic Radiation?! What are spectra? How could we measure a spectrum?! How do wavelengths correspond to colors for optical light? Does
More informationAstronomical Observations: Distance & Light 7/2/09. Astronomy 101
Astronomical Observations: Distance & Light 7/2/09 Astronomy 101 Astronomy Picture of the Day Astronomy 101 Something Cool: Lasers on the Moon Astronomy 101 Outline for Today Astronomy Picture of the Day
More informationChapter 17, Electromagnetic Waves Physical Science, McDougal-Littell, 2008
SECTION 1 (PP. 553-558): ELECTROMAGNETIC WAVES HAVE UNIQUE TRAITS. Georgia Standards: S8P4a Identify the characteristics of electromagnetic and mechanical waves; S8P4d Describe how the behavior of waves
More informationCore 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
More informationElectromagnetic radiation simply a stream of photons (a bundle of energy) What are photons???
Electromagnetic radiation simply a stream of photons (a bundle of energy) What are photons??? no mass travel in a wave like pattern move at the speed of light contain a certain amount (or bundle) of energy
More informationPhysics 30: Chapter 5 Exam Wave Nature of Light
Physics 30: Chapter 5 Exam Wave Nature of Light Name: Date: Mark: /33 Numeric Response. Place your answers to the numeric response questions, with units, in the blanks at the side of the page. (1 mark
More informationLight.notebook May 03, 2016
Unit 4 Light LIGHT.1 Describe the ray model of light. 16.1 LIGHT.2 Predict the effect of distance on light s illuminance. 16.1 LIGHT.3 Explain polarization and the Doppler effect. 16.2 LIGHT.4 Describe
More informationElectromagnetic Waves
Big Bang Theory OUTLINE First 25 minutes of the video Notes on waves, Doppler effect, and red/blue shift Mini lab on spectrums and how they are used to understand red and blue shift Mini lab on the expanding
More informationCh 7 Quantum Theory of the Atom (light and atomic structure)
Ch 7 Quantum Theory of the Atom (light and atomic structure) Electromagnetic Radiation - Electromagnetic radiation consists of oscillations in electric and magnetic fields. The oscillations can be described
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 informationPhysics: Waves, Sound/Light, Electromagnetic Waves, Magnetism, Mains Electricity and the National Grid
6.7 Describe the method to measure the speed of sound in air and the speed of ripples on the water surface 7.5 Link the properties of EM waves to their practical application 7.6 Apply knowledge of reflection,
More informationDo Now: Bohr Diagram, Lewis Structures, Valence Electrons 1. What is the maximum number of electrons you can fit in each shell?
Chemistry Ms. Ye Name Date Block Do Now: Bohr Diagram, Lewis Structures, Valence Electrons 1. What is the maximum number of electrons you can fit in each shell? 1 st shell 2 nd shell 3 rd shell 4 th shell
More informationLight. Mike Maloney Physics, SHS
Light Mike Maloney Physics, SHS 1 Light What is LIGHT? WHERE DOES IT COME FROM? 2003 Mike Maloney 2 What is Light? Light is a wave, or rather acts like a wave. How do we know since we cannot see it? We
More informationThe Properties of Light. Our Window on the Universe
The Properties of Light Chapter 11 Our Window on the Universe Light! And God said, Let there be light: and there was light. And God saw the light, that it was good Genesis 1:3-4 Standing Waves We can create
More information0.4 s 0.8 s 1.5 s. 2.5 s. 2. A beam of light from a ray box spreads out as shown in the diagram and strikes a plane mirror.
1. ship is fitted with echo-sounding equipment. pulse of sound is sent downwards from the ship at a speed of 1500 m/s. The seabed is 600m below the ship. How long will it take the pulse of sound to return
More informationElectromagnetic spectra
Properties of Light Waves, particles and EM spectrum Interaction with matter Absorption Reflection, refraction and scattering Polarization and diffraction Reading foci: pp 175-185, 191-199 not responsible
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 informationWhich type of electromagnetic wave has a wavelength longer than that of yellow light? A. Infrared radiation C. X-rays B. Gamma Rays D.
Which type of electromagnetic wave has a wavelength longer than that of yellow light? A. Infrared radiation C. X-rays B. Gamma Rays D. UV Rays Science Starter! 10.14-15.13! THE UNIVERSE AND ELECTROMAGNETIC
More informationLight demonstrates the characteristics of A. particles, only B. waves, only C. both particles and waves D. neither particles nor waves
Which pair of terms best describes light waves traveling from the Sun to Earth? A. electromagnetic and transverse B. electromagnetic and longitudinal C. mechanical and transverse D. mechanical and longitudinal
More informationFrequency: the number of complete waves that pass a point in a given time. It has the symbol f. 1) SI Units: Hertz (Hz) Wavelength: The length from
Frequency: the number of complete waves that pass a point in a given time. It has the symbol f. 1) SI Units: Hertz (Hz) Wavelength: The length from the one crest of a wave to the next. I. Electromagnetic
More informationBeing a Physicist Unit 5. Summary Sheets. Gleniffer High School
Being a Physicist Unit 5 Summary Sheets Gleniffer High School 0 Experiences & Outcomes I can explain how sound vibrations are carried by waves through air, water and other materials SCN 2-11a By exploring
More informationLIGHT WAVES AND PARTICLES
LIGHT WAVES AND PARTICLES THE ELECTROMAGNETIC SPECTRUM The light we see is only a tiny part of a much larger set of transverse waves. Like all waves, these carry energy without moving matter Although they
More informationEP118 Optics. Content TOPIC 1 LIGHT. Department of Engineering Physics University of Gaziantep
EP11 Optics TOPIC 1 LIGHT Department of Engineering Physics University of Gaziantep July 2011 Sayfa 1 Content 1. History of Light 2. Wave Nature of Light 3. Quantum Theory of Light 4. Elecromagnetic Wave
More informationLecture 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
More informationIntroduction to Properties of Waves
Introduction to Properties of Waves Waves travel through materials as vibrations and transmit energy. Though nearly all waves travel through matter, they never transmit matter. Waves are created when a
More informationPH104 Lab 1 Light and Matter Pre-lab
Name: Lab Time: PH04 Lab Light and Matter Pre-lab. Goals Since this is the first lab, we don t want to try to do things that are too complex. We would like to get used to the lab room and some of the steps
More informationNational 3 Waves and Radiation
What is a wave? National 3 Waves and Radiation 1. Wave Properties The basic definition Waves are a way of transporting energy from one place to another. They do this through some form of vibration. We
More informationWELCOME 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,
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 informationDemocritus & Leucippus (~400 BC) Greek philosophers: first to propose that matter is made up of particles called atomos, the Greek word for atoms
Chemistry Ms. Ye Name Date Block The Evolution of the Atomic Model Since atoms are too small to see even with a very powerful microscope, scientists rely upon indirect evidence and models to help them
More informationRADIATION and the EM Spectrum
RADIATION and the EM Spectrum Radioactivity is the of high-energy particles and/or of energy from a substance as a result of of its atoms. There are several types of radiation. Radiation from the sun is
More informationBeing a Chemist. Summary Sheets. Gleniffer High School
Being a Chemist Summary Sheets Gleniffer High School 0 State that the light year is a measure of astronomical distance State the speed at which light travels Give examples of the relative distance between
More information2) 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,
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 informationSPECTRUM. Dispersion. This phenomenon can be observed in a lab environment using a
SPECTRUM Dispersion The phenomenon due to which a polychromatic light, like sunlight, splits into its component colours, when passed through a transparent medium like a glass prism, is called dispersion
More informationFluorescence. Incandescence. Electric. Bioluminescence Chemiluminescence. Combustion
Fluorescence Incandescence Electric Bioluminescence Chemiluminescence Combustion Pythagoras A Greek philosopher Believed light was beams of tiny particles The eyes could detect these particles and see
More informationProperties 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
More informationThe 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
More informationf= = s = Hz m Thus (B) is the correct answer.
MCAT Physics Problem Solving Drill 17: Electromagnetic Radiation Question No. 1 of 10 Question 1. Violet light has a wavelength of 700 nm. What is the frequency of this radiation? Question #01 (A) 2.3
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 informationWavelength (λ)- Frequency (ν)- Which of the following has a higher frequency?
Name: Unit 5- Light and Energy Electromagnetic Spectrum Notes Electromagnetic radiation is a form of energy that emits wave-like behavior as it travels through space. Amplitude (a)- Wavelength (λ)- Which
More informationUnit 3: Optics Chapter 4. Properties of Light
Unit 3: Optics Chapter 4 Properties of Light There are many types of light sources... Fluorescence Incandescence Electric Bioluminescence Chemiluminescence Combustion The Nature of Light Pythagoras A Greek
More informationAnswer Key Grade 5. Practice Test. What is Light? How Light Behaves
Answer Key Grade 5 What is Light? How Light Behaves 1. Part A Based on the text and diagram, how many major bands of radiant energy are there? A Incorrect. Look at the Kinds of Radiant Energy diagram.
More informationArrangement of Electrons. Chapter 4
Arrangement of Electrons Chapter 4 Properties of Light -Light s interaction with matter helps to understand how electrons behave in atoms -Light travels through space & is a form of electromagnetic radiation
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 informationThe 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 ---------------------------------------------------------------------------------------------------------------------
More information2. 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
More informationImaging Chain. Imaging Chain. Imaging Chain. 1. Light source. 2. Object interactions. 3. Propagation & Collection: optics (lenses & mirrors)
1. Light source λ [nm] sunset blue sky 2. Object interactions 3. Propagation & Collection: optics (lenses & mirrors) 1 Optics: Lenses Objects Images Optics: Mirrors Object Image 4. Detector or Sensor Photographic
More informationthe ability to do work or cause change (work is force exerted on an object causing it to move a distance)
Vocabulary Terms - Energy energy the ability to do work or cause change (work is force exerted on an object causing it to move a distance) heat Heat is a form of energy that flows between two substances
More informationIntroduction. Electromagnetic Waves. Electromagnetic Waves
Introduction Much of the information we know about electrons comes from studies of interactions of light and matter. In the early 1900 s, scientists discovered that light has properties of both a wave
More informationSupplemental Activities. Module: Atomic Theory. Section: Electromagnetic Radiation and Matter - Key
Supplemental Activities Module: Atomic Theory Section: Electromagnetic Radiation and Matter - Key Introduction to Electromagnetic Radiation Activity 1 1. What are the two components that make up electromagnetic
More information5.111 Lecture Summary #3 Monday, September 8, 2014
5.111 Lecture Summary #3 Monday, September 8, 2014 Reading for today: Section 1.2 and Section 1.4 with a focus on pgs 10-12 (4 th ed or 5 th ed). Read for Lecture 4: Section 1.5 The Wave-Particle Duality
More informationλ is a distance, so its units are m, cm, or mm, etc.
Electromagnetic Radiation (How we get most of our information about the cosmos) Radiation travels as waves. Waves carry information and energy. Properties of a wave Examples of electromagnetic radiation:
More informationProperties of Waves. Before You Read. What are the features of a wave?
Properties of Waves Textbook pages 134 143 Before You Read Section 4.1 Summary In this section, you will find out about waves, such as water waves, sound waves, and radio waves. On the lines below, list
More informationUnderstanding Sight Requires. Understanding Light Understanding the Eye-Brain
Seeing Things Understanding Sight Requires Understanding Light Understanding the Eye-Brain The Eye & Brain (- are part of how we see.) http://www.michaelbach.de/ot/mot_adaptspiral/index.html Meet our
More informationHow do we get information about heavenly bodies when they are so far??
In Astronomy the most common unit to measure distances is---- Light Year: It is the distance traveled by light in one year. Speed of light ~ 300,000 kilometers/sec So in one hour lights travels = 300,000
More information) in the box next to your answer. (1) (b) Explain why it is difficult to predict when an earthquake will happen. (2)
Earthquakes 1 (a) Seismic (earthquake) waves can be either P-waves or S-waves. Which row of the table is correct for P-waves? Put a cross ( ) in the box next to your answer. (1) type of wave can they be
More informationPhysics and the Quantum Mechanical Model
chemistry 1 of 38 Mechanical Model Neon advertising signs are formed from glass tubes bent in various shapes. An electric current passing through the gas in each glass tube makes the gas glow with its
More informationLecture 6: The Physics of Light, Part 1. Astronomy 111 Wednesday September 13, 2017
Lecture 6: The Physics of Light, Part 1 Astronomy 111 Wednesday September 13, 2017 Reminders Star party tonight! Homework #3 due Monday Exam #1 Monday, September 25 The nature of light Look, but don t
More informationNature of Light. Objectives. What is light What are the different forms
Nature of Light Objectives What is light What are the different forms Light s Importance Light contributes 99% of all observations in Astronomy Light is a form of energy Light is electromagnetic radiation
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 informationLight: Transverse WAVE
Light Longitudinal WAVES Light: Transverse WAVE Light: Particle or wave Photon The Wave Nature of Light 1. Unlike other branches of science, astronomers cannot touch or do field work on their samples.
More informationUnit 4 Parent Guide: Waves. What is a wave?
Unit 4 Parent Guide: Waves What is a wave? A wave is a disturbance or vibration that carries energy from one location to another. Some waves require a medium to transmit the energy whereas others can travel
More informationWave properties of light
Wave properties of light Light is energy whose wavelength is the distance traveled in order to complete one cycle. The frequency of light refers to the number of cycles in one second. Low-energy light
More information10/27/2017 [pgs ]
Objectives SWBAT explain the relationship between energy and frequency. SWBAT predict the behavior of and/or calculate quantum and photon energy from frequency. SWBAT explain how the quantization of energy
More information3. The very long ones are called waves, and the very short ones are called waves.
NASA Mission: Science Introduction to the Electromagnetic Spectrum Web Quest Directions: Load the following website which will discuss the electromagnetic spectrum in detail. http://missionscience.nasa.gov/ems/01_intro.html
More informationDiscussion Review Test #2. Units 12-19: (1) (2) (3) (4) (5) (6)
Discussion Review Test #2 Units 12-19: (1) (2) (3) (4) (5) (6) (7) (8) (9) Galileo used his observations of the changing phases of Venus to demonstrate that a. the sun moves around the Earth b. the universe
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 informationThe Nature of Light. We have a dual model
Light and Atoms Properties of Light We can come to understand the composition of distant bodies by analyzing the light they emit This analysis can tell us about the composition as well as the temperature
More informationhigh energy state for the electron in the atom low energy state for the electron in the atom
Atomic Spectra Objectives The objectives of this experiment are to: 1) Build and calibrate a simple spectroscope capable of measuring wavelengths of visible light. 2) Measure several wavelengths of light
More informationIGHT RADE ASSESSMENT PACKET Discover refraction, reflection, beam scattering, optical density, transmission, and absorption as you investigate the electromagnetic spectrum using lenses, mirrors and filters
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 informationEXPERIMENT 17: Atomic Emission
EXPERIMENT 17: Atomic Emission PURPOSE: To construct an energy level diagram of the hydrogen atom To identify an element from its line spectrum. PRINCIPLES: White light, such as emitted by the sun or an
More information