# Physics 1230: Light and Color

Save this PDF as:

Size: px
Start display at page:

## Transcription

1 Physics 1230: Light and Color Exam 1 is tomorrow, Wed. June 9, in class. Covers material from Chapter 1, pgs 1-25, Lectures and Homework 1-3. HW4 will be up soon. Due Thursday, 5PM Lecture 5: Shadows, eclipses. Exam 1 Review. Reading: Chapter 1 for review. Chapter 2, pgs

2 Which level of physics is needed to explain what properties of light? Image formation - ray theory Wavelength color, polarization and diffraction - wave theory (electricity and magnetism) Interaction of light with atoms - quantum theory of photons Constant speed of light no matter how fast the source or observer is moving - special theory of relativity We have to stay focused to make progress! RAY THEORY for now.

3 Chapter 2 Geometrical Optics Geometrical optics is the theory of RAYS (straight lines) and how they reflect and refract (bend). Lots of similarity to GEOMETRY of lines and triangles. Main Topics We are here 1. Shadows 2. Reflection 3. Refraction 4. Dispersion 3

4 1. Shadows a. Point source or diffuse source? b. Umbra and penumbra c. Solar and lunar eclipses d. Pinhole cameras 4

5 A point light source emits rays in all directions radially outwards The rays from two point light sources look like this The rays only tell us which direction the light goes in. We know that the light gets dimmer as you move further away from the light source. (Think of the sun. It would be blinding if we were closer to the sun)

6 Shadows appear when rays are blocked Wall Wall Rays that ARE blocked by the book Point light source Rays that are NOT blocked by the book Book If we move the wall back from the book, the shadow gets A) Smaller B) Bigger C) no change A B 2 point light sources unblocked Book unblocked blocked umbra The two parts of the penumbra each get light from only one of the two bulbs. The umbra gets no light from either of the two bulbs. The bright region gets light from both of the bulbs.

7

8 Concept question Shadows tell us: A) What direction the light is shining from B) That something is blocking the light C) That light travels in straight lines D) A, B, & C E) A & C

9 We can extend the definition of the umbra and penumbra to exist in space even without a wall or screen! Wall The light from B doesn't reach this penumbra A B Book umbra The light from A doesn't reach this penumbra

10 We can think about large light sources as being composed of many small light sources

11 An "extended object" consists of many points. Each point on the object emits or reflects rays in all directions (unless the object is a mirror) MANY reflected rays come from each point on Alex. This is diffuse reflection Incident rays from a frosted light bulb

12 The more rays that reach a point the brighter the point This is why regions outside the penumbra and umbra are brighter These regions get light rays from both point light sources The more lights you turn on the brighter the reflected light from objects in the room See rays at right Light source 2 Light source 1 Reflected rays from light 1 Reflected rays from light 2 Your eye sees a brighter nose than with either light source alone

13 An extended light source such as the sun (or a large light bulb) also produces an umbra and penumbra in empty space behind the Earth (or another object) All rays coming from point A on the sun between the two dashed rays are blocked by Earth All rays coming from point B on the sun between the two dotted rays are blocked by Earth The umbra gets no light from any portion of the sun The umbra gets smaller not larger further behind Earth since the Sun is larger than Earth The penumbra gets light from part of the sun If you look back from the penumbra you can see part of the sun When the moon passes completely into the umbra there is a total eclipse of the moon. When the moon passes into the penumbra there is a partial eclipse of the moon Rays from this part of the sun DO reach the upper penumbra A Sun B Penumbra Umbra Penumbra Rays from this part of the sun DON'T reach the upper penumbra because they are blocked by Earth

14 Solar eclipse Geometry: moon NOTE: The umbra is usually about 200km wide

15 Total solar eclipse During a solar eclipse, the shadow of the Moon passes over the surface of the Earth. From the Earth, we can see the moon blocking the light of the Sun. Looking at the demonstration, you may think that solar eclipses happen very often. The Sun, Earth, and Moon must be lined up just right, in order for a solar eclipse to take place. This happens only two to five times a year. Since the Moon's shadow is so small, compared to the size of the Earth, a solar eclipse can be seen from only small portions of the Earth.

16 Map of the total solar eclipse, Aug 1,

17

18 Schedule:

19 Lunar eclipse (partial and total) During a lunar eclipse, the moon passes through the shadow of the Earth. As we look at the moon from the Earth, it looks to us as if the shadow of the Earth is slowly covering the moon. You may think that lunar eclipses happen very often. However, the Sun, Earth, and Moon must be lined up just right, in order for a lunar eclipse to take place. This happens very rarely. In most years there are only two lunar eclipses that can be seen only from certain places on Earth. In a partial lunar eclipse, the moon passes through the penumbra or part of the umbra. In a total lunar eclipse, the moon is completely within the umbra.

20 Based on what we know about eclipses, how do we prove this?

21 A pinhole camera works by blocking rays (demo) What is an image? A real image is formed on a screen when one or more rays from each point on the object reach the corresponding points on the screen and no other rays from other points on the object reach those points blocked rays Pinhole Camera Light bulb Image of light bulb Notice that this image is upside down and left-right reversed. Using shadows

22 The object photographed with a pinhole camera does not have to be self-luminous! One of many rays of light shining on Alex Pinhole Camera Alex blocked rays Once again this image is upside down and leftright reversed. Early photographs (daguerreotypes) were always left-right reversed; Note the correspondence between the distances object-camera-screen and image vs. object sizes Reflected rays off the real Alex go through the hole and make the image Image of Alex

23 Finding an image by using rays is called ray tracing. Trace rays from the object through the pinhole in the camera to find the image rather than trusting your intuition! Is the image of Alex smaller or larger than the real Alex? a)smaller b)larger c)same size Is the image of Alex smaller or larger than the real Alex? a)smaller b)larger c)same size

24 Extra Credit Project (20 points): Construct and use a camera on your own (see textbook for details, pages 35 & 36)

25 Review (Chapter 1) Light is an electromagnetic wave EM waves have both traveling electric and magnetic fields EM waves are created by accelerating charge. EM waves can make other charges move. EM waves travel outward like waves in a pond, with electric and magnetic vectors perpendicular to the direction of motion. EM waves carry energy (and momentum). 25

26 Review (Chapter 1 too) c = 300,000 km/s =3 x 10 8 m/s c = fl, units are Hz for f and meters for l wavelength of light spans nm (blue to red) Atmosphere transmits light and radio, is opaque to UV, x-rays, some IR Amplitude of a wave is the half-height Wavelength is distance from crest to crest Period is the time for the wave to go up and down once at some location. 26

27 Review 27

28 Review The rotating mirror rotates 530 revolutions per second. Therefore, the frequency of revolution is: A) 530 seconds B) 84 Hz C) 530 Hz D) None of these. 28

29 Review The rotating mirror rotates 530 revolutions per second. Therefore, the period for a single revolution is: A) 1.9 seconds B) 530 seconds C) 1.9 milliseconds D) 1.9 nanoseconds E) Something else 29

30 Review The rotating mirror rotates with a period of 1.9 msec. Therefore, the time needed to rotate from one flat mirror to the next flat mirror is: A) 1.9 msec B) 238 msec C) 1.9 ksec D) 238 nsec E) Something else 30

31 Review The rotating mirror requires 238 msec to rotate from one flat mirror to the next. During that time, the reflected light ray travels out 22 miles are returns. The speed of light in miles per second is: A) 92,500 miles/sec B) 185,000 miles/sec C) 300,000 miles/sec E) None of these 31

32 That s IT! Good Luck on Exam 1 32

### Light as a Wave. The Nature of Light. EM Radiation Spectrum. EM Radiation Spectrum. Electromagnetic Radiation

The Nature of Light Light and other forms of radiation carry information to us from distance astronomical objects Visible light is a subset of a huge spectrum of electromagnetic radiation Maxwell pioneered

COLLATED QUESTIONS: ELECTROMAGNETIC RADIATION 2011(2): WAVES Doppler radar can determine the speed and direction of a moving car. Pulses of extremely high frequency radio waves are sent out in a narrow

### PHYS 222 Spring 2012 Final Exam. Closed books, notes, etc. No electronic device except a calculator.

PHYS 222 Spring 2012 Final Exam Closed books, notes, etc. No electronic device except a calculator. NAME: (all questions with equal weight) 1. If the distance between two point charges is tripled, the

### 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

### Physics 116. Nov 4, 2011. Session 22 Review: ray optics. R. J. Wilkes Email: ph116@u.washington.edu

Physics 116 Session 22 Review: ray optics Nov 4, 2011 R. J. Wilkes Email: ph116@u.washington.edu ! Exam 2 is Monday!! All multiple choice, similar to HW problems, same format as Exam 1!!! Announcements

### Overview. What is EMR? Electromagnetic Radiation (EMR) LA502 Special Studies Remote Sensing

LA502 Special Studies Remote Sensing Electromagnetic Radiation (EMR) Dr. Ragab Khalil Department of Landscape Architecture Faculty of Environmental Design King AbdulAziz University Room 103 Overview What

### ILLUSTRATIVE EXAMPLE: Given: A = 3 and B = 4 if we now want the value of C=? C = 3 + 4 = 9 + 16 = 25 or 2

Forensic Spectral Anaylysis: Warm up! The study of triangles has been done since ancient times. Many of the early discoveries about triangles are still used today. We will only be concerned with the "right

### Physics 202 Problems - Week 8 Worked Problems Chapter 25: 7, 23, 36, 62, 72

Physics 202 Problems - Week 8 Worked Problems Chapter 25: 7, 23, 36, 62, 72 Problem 25.7) A light beam traveling in the negative z direction has a magnetic field B = (2.32 10 9 T )ˆx + ( 4.02 10 9 T )ŷ

### Electromagnetic Radiation (EMR) and Remote Sensing

Electromagnetic Radiation (EMR) and Remote Sensing 1 Atmosphere Anything missing in between? Electromagnetic Radiation (EMR) is radiated by atomic particles at the source (the Sun), propagates through

### Handy Pinhole Camera (Latin Camera Obscura) to observe the transit of Venus, eclipses and other phenomena occurring on the Sun

Lech Mankiewicz Centre for Theoretical Physics, Polish Academy of Sciences, Warsaw, Global Intelligent Robotic Telescopes Network GLORIA http://www.gloria-project.eu/ Paweł Rudawy Astronomical Institute,

### Physics 10. Lecture 29A. "There are two ways of spreading light: to be the candle or the mirror that reflects it." --Edith Wharton

Physics 10 Lecture 29A "There are two ways of spreading light: to be the candle or the mirror that reflects it." --Edith Wharton Converging Lenses What if we wanted to use refraction to converge parallel

### 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

### In studying the Milky Way, we have a classic problem of not being able to see the forest for the trees.

In studying the Milky Way, we have a classic problem of not being able to see the forest for the trees. A panoramic painting of the Milky Way as seen from Earth, done by Knut Lundmark in the 1940 s. The

### Level 3 Science, 2006

For Supervisor s 3 9 0 7 3 2 Level 3 Science, 2006 90732 Describe selected properties and applications of EMR, radioactive decay, sound and ultrasound Credits: Four 9.30 am Tuesday 28 November 2006 Check

### D.S. Boyd School of Earth Sciences and Geography, Kingston University, U.K.

PHYSICAL BASIS OF REMOTE SENSING D.S. Boyd School of Earth Sciences and Geography, Kingston University, U.K. Keywords: Remote sensing, electromagnetic radiation, wavelengths, target, atmosphere, sensor,

Blackbody Radiation References 1) R.A. Serway, R.J. Beichner: Physics for Scientists and Engineers with Modern Physics, 5 th Edition, Vol. 2, Ch.40, Saunders College Publishing (A Division of Harcourt

### CPI Links Content Guide & Five Items Resource

CPI Links Content Guide & Five Items Resource Introduction The following information should be used as a companion to the CPI Links. It provides clarifications concerning the content and skills contained

### Learning about light and optics in on-line general education classes using at-home experimentation.

Learning about light and optics in on-line general education classes using at-home experimentation. Jacob Millspaw, Gang Wang, and Mark F. Masters Department of Physics, Indiana University Purdue University

### Physics in Entertainment and the Arts

Physics in Entertainment and the Arts Chapter VII Wave Transfer and Waves incident on a rigid boundary almost completely reflect Almost all the wave s energy is reflected back the way it came Waves incident

### NASA LAUNCHPAD Educational Product Educators & Students Grades 9-12 www.nasa.gov NP-2009-12-232-LaRC

National Aeronautics and Space Administration NASA eclips TM Educator Guide NASA LAUNCHPAD Making Waves Educational Product Educators & Students Grades 9-12 NP-2009-12-232-LaRC www.nasa.gov eclips Making

### Treasure Hunt. Lecture 2 How does Light Interact with the Environment? EMR Principles and Properties. EMR and Remote Sensing

Lecture 2 How does Light Interact with the Environment? Treasure Hunt Find and scan all 11 QR codes Choose one to watch / read in detail Post the key points as a reaction to http://www.scoop.it/t/env202-502-w2

### Honeywell Night Vision Security. The Night Hawk Advantage

Honeywell Night Vision Security The Night Hawk Advantage What is Night Vision Security? Most crimes happen at night the challenge to the security professional is to ensure the video footage is effective

### Computer Animation: Art, Science and Criticism

Computer Animation: Art, Science and Criticism Tom Ellman Harry Roseman Lecture 12 Ambient Light Emits two types of light: Directional light, coming from a single point Contributes to diffuse shading.

### The only thing we can really see is light. But what is

LIGHT Objectives Describe the dual nature of light. (27.1) State what Albert Michelson s experimental value for the speed of light was. (27.2) State the waves in the electromagnetic spectrum. (27.3) Describe

### E190Q Lecture 5 Autonomous Robot Navigation

E190Q Lecture 5 Autonomous Robot Navigation Instructor: Chris Clark Semester: Spring 2014 1 Figures courtesy of Siegwart & Nourbakhsh Control Structures Planning Based Control Prior Knowledge Operator

### G482 Electrons, Waves and Photons; Revision Notes Module 1: Electric Current

G482 Electrons, Waves and Photons; Revision Notes Module 1: Electric Current Electric Current A net flow of charged particles. Electrons in a metal Ions in an electrolyte Conventional Current A model used

### How Landsat Images are Made

How Landsat Images are Made Presentation by: NASA s Landsat Education and Public Outreach team June 2006 1 More than just a pretty picture Landsat makes pretty weird looking maps, and it isn t always easy

### Physics 6C, Summer 2006 Homework 2 Solutions

Physics 6C, Summer 006 Homework Solutions All problems are from the nd edition of Walker. Numerical values are different for each student. Chapter 3 Problems. Figure 3-30 below shows a circuit containing

### Teacher s Resource. 2. The student will see the images reversed left to right.

Answer Booklet Reflection of Light With a Plane (Flat) Mirror Trace a Star Page 16 1. The individual students will complete the activity with varying degrees of difficulty. 2. The student will see the

### 521493S Computer Graphics. Exercise 2 & course schedule change

521493S Computer Graphics Exercise 2 & course schedule change Course Schedule Change Lecture from Wednesday 31th of March is moved to Tuesday 30th of March at 16-18 in TS128 Question 2.1 Given two nonparallel,

### Graphical displays are generally of two types: vector displays and raster displays. Vector displays

Display technology Graphical displays are generally of two types: vector displays and raster displays. Vector displays Vector displays generally display lines, specified by their endpoints. Vector display

### Experiment #5: Qualitative Absorption Spectroscopy

Experiment #5: Qualitative Absorption Spectroscopy One of the most important areas in the field of analytical chemistry is that of spectroscopy. In general terms, spectroscopy deals with the interactions

### People s Physics Book

The Big Ideas: The name electric current is given to the phenomenon that occurs when an electric field moves down a wire at close to the speed of light. Voltage is the electrical energy density (energy

### An Optics First Year Experience Course for Community College Students

An Optics First Year Experience Course for Community College Students Judy Donnelly Three Rivers Community College Norwich, CT jdonnelly@lasertechonline.org Overview What is an FYE course? FYE in the first

### Fundamentals of Electromagnetic Fields and Waves: I

Fundamentals of Electromagnetic Fields and Waves: I Fall 2007, EE 30348, Electrical Engineering, University of Notre Dame Mid Term II: Solutions Please show your steps clearly and sketch figures wherever

### A wave lab inside a coaxial cable

INSTITUTE OF PHYSICS PUBLISHING Eur. J. Phys. 25 (2004) 581 591 EUROPEAN JOURNAL OF PHYSICS PII: S0143-0807(04)76273-X A wave lab inside a coaxial cable JoãoMSerra,MiguelCBrito,JMaiaAlves and A M Vallera

### Robot Perception Continued

Robot Perception Continued 1 Visual Perception Visual Odometry Reconstruction Recognition CS 685 11 Range Sensing strategies Active range sensors Ultrasound Laser range sensor Slides adopted from Siegwart

### Lecture 14. Introduction to the Sun

Lecture 14 Introduction to the Sun ALMA discovers planets forming in a protoplanetary disc. Open Q: what physics do we learn about the Sun? 1. Energy - nuclear energy - magnetic energy 2. Radiation - continuum

### COMP175: Computer Graphics. Lecture 1 Introduction and Display Technologies

COMP175: Computer Graphics Lecture 1 Introduction and Display Technologies Course mechanics Number: COMP 175-01, Fall 2009 Meetings: TR 1:30-2:45pm Instructor: Sara Su (sarasu@cs.tufts.edu) TA: Matt Menke

### Welcome back to Physics 211. Physics 211 Spring 2014 Lecture 04-1 1. ask a physicist

Welcome back to Physics 211 Today s agenda: Rotations What s on the exam? Relative motion Physics 211 Spring 2014 Lecture 04-1 1 ask a physicist Why are neutrinos faster than light (photons)? I thought

### PHY114 S11 Term Exam 3

PHY4 S Term Exam S. G. Rajeev Mar 2 20 2:0 pm to :45 pm PLEASE write your workshop number and your workshop leader s name at the top of your book, so that you can collect your graded exams at the workshop.

### Homework #4 Solutions ASTR100: Introduction to Astronomy Fall 2009: Dr. Stacy McGaugh

Homework #4 Solutions ASTR100: Introduction to Astronomy Fall 2009: Dr. Stacy McGaugh Chapter 5: #50 Hotter Sun: Suppose the surface temperature of the Sun were about 12,000K, rather than 6000K. a. How

### Introduction to acoustic imaging

Introduction to acoustic imaging Contents 1 Propagation of acoustic waves 3 1.1 Wave types.......................................... 3 1.2 Mathematical formulation.................................. 4 1.3

### Interaction of Energy and Matter Gravity Measurement: Using Doppler Shifts to Measure Mass Concentration TEACHER GUIDE

Interaction of Energy and Matter Gravity Measurement: Using Doppler Shifts to Measure Mass Concentration TEACHER GUIDE EMR and the Dawn Mission Electromagnetic radiation (EMR) will play a major role in

### Specific Intensity. I ν =

Specific Intensity Initial question: A number of active galactic nuclei display jets, that is, long, nearly linear, structures that can extend for hundreds of kiloparsecs. Many have two oppositely-directed

### INTERFERENCE OBJECTIVES PRE-LECTURE. Aims

53 L4 INTERFERENCE Aims OBJECTIVES When you have finished this chapter you should understand how the wave model of light can be used to explain the phenomenon of interference. You should be able to describe

### Solar atmosphere. Solar activity and solar wind. Reading for this week: Chap. 6.2, 6.3, 6.5, 6.7 Homework #2 (posted on website) due Oct.

Solar activity and solar wind Solar atmosphere Reading for this week: Chap. 6.2, 6.3, 6.5, 6.7 Homework #2 (posted on website) due Oct. 17 Photosphere - visible surface of sun. Only ~100 km thick. Features

UNIT VII Electromagnetic Radiation (a) (b) (c) This series of photos of a supernova remnant shows the various types of electromagnetic radiation that are being emitted from the supernova remnant. The large

### XX. Introductory Physics, High School

XX. Introductory Physics, High School High School Introductory Physics Test The spring 2013 high school Introductory Physics test was based on learning standards in the Physics content strand of the Massachusetts

### i( t) L i( t) 56mH 1.1A t = τ ln 1 = ln 1 ln 1 6.67ms

Exam III PHY 49 Summer C July 16, 8 1. In the circuit shown, L = 56 mh, R = 4.6 Ω an V = 1. V. The switch S has been open for a long time then is suenly close at t =. At what value of t (in msec) will

### Energy - Heat, Light, and Sound

Science Benchmark: 06:06 Heat, light, and sound are all forms of energy. Heat can be transferred by radiation, conduction and convection. Visible light can be produced, reflected, refracted, and separated

### 2 Absorbing Solar Energy

2 Absorbing Solar Energy 2.1 Air Mass and the Solar Spectrum Now that we have introduced the solar cell, it is time to introduce the source of the energy the sun. The sun has many properties that could

### Physics Kinematics Model

Physics Kinematics Model I. Overview Active Physics introduces the concept of average velocity and average acceleration. This unit supplements Active Physics by addressing the concept of instantaneous

### Syllabus. May 16, Wednesday, 10:30 AM 12:30 PM

Syllabus Physics 270 0301, 0304 & 0306 Spring 2007 Prof. H. H. Chen Lectures: Sections 0301 TuTh 2:00 3:15PMin Physics Rm 1412. Sections 0304 TuTh 2:00 3:15PMin Physics Rm 1412. Sections 0306 TuTh 2:00

### Exam Three Momentum Concept Questions

Exam Three Momentum Concept Questions Isolated Systems 4. A car accelerates from rest. In doing so the absolute value of the car's momentum changes by a certain amount and that of the Earth changes by:

### Page. ASTRONOMICAL OBJECTS (Page 4).

Star: ASTRONOMICAL OBJECTS ( 4). Ball of gas that generates energy by nuclear fusion in its includes white dwarfs, protostars, neutron stars. Planet: Object (solid or gaseous) that orbits a star. Radius

### PHYS 39a Lab 3: Microscope Optics

PHYS 39a Lab 3: Microscope Optics Trevor Kafka December 15, 2014 Abstract In this lab task, we sought to use critical illumination and Köhler illumination techniques to view the image of a 1000 lines-per-inch

### A: zero everywhere. B: positive everywhere. C: negative everywhere. D: depends on position.

A string is clamped at both ends and then plucked so that it vibrates in a standing wave between two extreme positions a and c. (Let upward motion correspond to positive velocities.) When the

### Section 4: The Basics of Satellite Orbits

Section 4: The Basics of Satellite Orbits MOTION IN SPACE VS. MOTION IN THE ATMOSPHERE The motion of objects in the atmosphere differs in three important ways from the motion of objects in space. First,

### Raman spectroscopy Lecture

Raman spectroscopy Lecture Licentiate course in measurement science and technology Spring 2008 10.04.2008 Antti Kivioja Contents - Introduction - What is Raman spectroscopy? - The theory of Raman spectroscopy

### Cathode Ray Tube. Introduction. Functional principle

Introduction The Cathode Ray Tube or Braun s Tube was invented by the German physicist Karl Ferdinand Braun in 897 and is today used in computer monitors, TV sets and oscilloscope tubes. The path of the

### Chemistry 102 Summary June 24 th. Properties of Light

Chemistry 102 Summary June 24 th Properties of Light - Energy travels through space in the form of electromagnetic radiation (EMR). - Examples of types of EMR: radio waves, x-rays, microwaves, visible

### An introduction to Global Illumination. Tomas Akenine-Möller Department of Computer Engineering Chalmers University of Technology

An introduction to Global Illumination Tomas Akenine-Möller Department of Computer Engineering Chalmers University of Technology Isn t ray tracing enough? Effects to note in Global Illumination image:

### UNIVERSITY OF SASKATCHEWAN Department of Physics and Engineering Physics

UNIVERSITY OF SASKATCHEWAN Department of Physics and Engineering Physics Physics 111.6 MIDTERM TEST #4 March 15, 2007 Time: 90 minutes NAME: (Last) Please Print (Given) STUDENT NO.: LECTURE SECTION (please

### Project 2B Building a Solar Cell (2): Solar Cell Performance

April. 15, 2010 Due April. 29, 2010 Project 2B Building a Solar Cell (2): Solar Cell Performance Objective: In this project we are going to experimentally measure the I-V characteristics, energy conversion

### On Quiz: Change #2 to 9/23

Wednesday, October 1 (!) Objective: SWBAT read and understand speed graphs 1. Pick up something 2. Write HW: Get Test Signed! Everybody!! 3. Warm up quiz today! Folders between you! On Quiz: Change #2

### Physics 214 Waves and Quantum Physics. Lecture 1, p 1

Physics 214 Waves and Quantum Physics Lecture 1, p 1 Welcome to Physics 214 Faculty: Lectures A&B: Paul Kwiat Discussion: Nadya Mason Labs: Karin Dahmen All course information is on the web site. Read

### Supporting Online Material for

www.sciencemag.org/cgi/content/full/332/6031/862/dc1 Supporting Online Material for Improved Learning in a Large-Enrollment Physics Class Louis Deslauriers, Ellen Schelew, Carl Wieman* *To whom correspondence

Table of Contents 1.0 Introduction... 1 2.0 Electromagnetic Radiation... 1 2.1 The Electromagnetic Spectrum... 2 2.2 Electromagnetic Interactions with Matter... 3 3.0 Spectroscopy... 5 3.1 Refraction and

### Electromagnetic Radiation Energy that comes to us from the sun is transported in the form of waves known as electromagnetic energy.

Electromagnetic Radiation Energy that comes to us from the sun is transported in the form of waves known as electromagnetic energy. This combines electricity and magnetism such that setting up an electric

### Solar Ast ro p h y s ics

Peter V. Foukal Solar Ast ro p h y s ics Second, Revised Edition WI LEY- VCH WILEY-VCH Verlag Co. KCaA Contents Preface 1 1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 1.9 2 2.1 2.1.1 2.1.2 2.2 2.2.1 2.2.2 2.2.3 2.3

### Why is it renewable? Well, the sun will always be there for us, and we can use as much of the sun s energy as we want and it will never run out.

6. Solar Energy So far we have been looking at how to reduce CO 2 emissions by cutting down on our use of fossil fuels. Now let s look at getting renewable energy from the sun. Why is it renewable? Well,

### Solar Flux and Flux Density. Lecture 3: Global Energy Cycle. Solar Energy Incident On the Earth. Solar Flux Density Reaching Earth

Lecture 3: Global Energy Cycle Solar Flux and Flux Density Planetary energy balance Greenhouse Effect Vertical energy balance Latitudinal energy balance Seasonal and diurnal cycles Solar Luminosity (L)

### Computer Graphics Global Illumination (2): Monte-Carlo Ray Tracing and Photon Mapping. Lecture 15 Taku Komura

Computer Graphics Global Illumination (2): Monte-Carlo Ray Tracing and Photon Mapping Lecture 15 Taku Komura In the previous lectures We did ray tracing and radiosity Ray tracing is good to render specular

Project ATMOSPHERE This guide is one of a series produced by Project ATMOSPHERE, an initiative of the American Meteorological Society. Project ATMOSPHERE has created and trained a network of resource agents

### Douglas Adams The Hitchhikers Guide to the Galaxy

There is a theory which states that if ever anybody discovers exactly what the Universe is for and why it is here, it will instantly disappear and be replaced by something even more bizarre and inexplicable.

### UCCS ENSC/PES 2500: Renewable Energy Spring 2011 Test 3 name:

UCCS ENSC/PES 2500: Renewable Energy Spring 2011 Test 3 name: 1. These waves travel through the body of the Earth and are called S waves. a. Transverse b. Longitudinal c. Amplitude d. Trough 2. These waves

### SOLAR ENERGY How much strikes the earth? How much can my building get? When is it too much?

SOLAR ENERGY How much strikes the earth? How much can my building get? When is it too much? The sun: friend of foe? Drawing by Le Corbusier ENGS 44 Sustainable Design Benoit Cushman-Roisin 14 April 2015

### ME 472 Engineering Metrology

ME 472 Engineering Metrology and Quality Control Chp 6 - Advanced Measurement Systems Mechanical Engineering University of Gaziantep Dr. A. Tolga Bozdana Assistant Professor Coordinate Measuring Machines

### Basic Physical Optics

F UNDAMENTALS OF PHOTONICS Module 1.4 Basic Physical Optics Leno S. Pedrotti CORD Waco, Texas In Module 1-3, Basic Geometrical Optics, we made use of light rays to demonstrate reflection and refraction

### THE SOLAR SYSTEM - EXERCISES 1

THE SOLAR SYSTEM - EXERCISES 1 THE SUN AND THE SOLAR SYSTEM Name the planets in their order from the sun. 1 2 3 4 5 6 7 8 The asteroid belt is between and Which planet has the most moons? About how many?

### 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

### Examination Space Missions and Applications I (AE2103) Faculty of Aerospace Engineering Delft University of Technology SAMPLE EXAM

Examination Space Missions and Applications I AE2103 Faculty of Aerospace Engineering Delft University of Technology SAMPLE EXAM Please read these instructions first: This are a series of multiple-choice

### Development of EM simulator for sea bed logging applications using MATLAB

Indian Journal of Geo-Marine Sciences Vol. 40 (2), April 2011, pp. 267-274 Development of EM simulator for sea bed logging applications using MATLAB Hanita Daud 1*, Noorhana Yahya 2, & Vijanth Asirvadam

### Periodic wave in spatial domain - length scale is wavelength Given symbol l y

1.4 Periodic Waves Often have situations where wave repeats at regular intervals Electromagnetic wave in optical fibre Sound from a guitar string. These regularly repeating waves are known as periodic

### Thompson/Ocean 420/Winter 2005 Tide Dynamics 1

Thompson/Ocean 420/Winter 2005 Tide Dynamics 1 Tide Dynamics Dynamic Theory of Tides. In the equilibrium theory of tides, we assumed that the shape of the sea surface was always in equilibrium with the

### DOING PHYSICS WITH MATLAB COMPUTATIONAL OPTICS RAYLEIGH-SOMMERFELD DIFFRACTION INTEGRAL OF THE FIRST KIND

DOING PHYSICS WITH MATLAB COMPUTATIONAL OPTICS RAYLEIGH-SOMMERFELD DIFFRACTION INTEGRAL OF THE FIRST KIND THE THREE-DIMENSIONAL DISTRIBUTION OF THE RADIANT FLUX DENSITY AT THE FOCUS OF A CONVERGENCE BEAM

### CS 431/636 Advanced Rendering Techniques"

CS 431/636 Advanced Rendering Techniques" Dr. David Breen" Korman 105D" Wednesday 6PM 8:50PM" Photon Mapping" 5/2/12" Slide Credits - UC San Diego Goal Efficiently create global illumination images with

I. A mechanical device shakes a ball-spring system vertically at its natural frequency. The ball is attached to a string, sending a harmonic wave in the positive x-direction. +x a) The ball, of mass M,

### Chapter 3.8 & 6 Solutions

Chapter 3.8 & 6 Solutions P3.37. Prepare: We are asked to find period, speed and acceleration. Period and frequency are inverses according to Equation 3.26. To find speed we need to know the distance traveled

### Laser Ranging to Nano-Satellites

13-0222 Laser Ranging to Nano-Satellites G. Kirchner (1), Ludwig Grunwaldt (2), Reinhard Neubert (2), Franz Koidl (1), Merlin Barschke (3), Zizung Yoon (3), Hauke Fiedler (4), Christine Hollenstein (5)

### Solar Observing in Schools

Solar Observing in Schools Basic solar observations and photography Prof. Ed Cackett ecackett@wayne.edu (313) 577 9355 http://physics.clas.wayne.edu/astronomy/sos.php Funded by the National Science Foundation

### Be Stars. By Carla Morton

Be Stars By Carla Morton Index 1. Stars 2. Spectral types 3. B Stars 4. Be stars 5. Bibliography How stars are formed Stars are composed of gas Hydrogen is the main component of stars. Stars are formed

### Optical Design Tools for Backlight Displays

Optical Design Tools for Backlight Displays Introduction Backlights are used for compact, portable, electronic devices with flat panel Liquid Crystal Displays (LCDs) that require illumination from behind.

### Dhiren Bhatia Carnegie Mellon University

Dhiren Bhatia Carnegie Mellon University University Course Evaluations available online Please Fill! December 4 : In-class final exam Held during class time All students expected to give final this date

### Examiners Report March 2013. GCSE Physics 5PH1H 01

Examiners Report March 2013 GCSE Physics 5PH1H 01 Edexcel and BTEC Qualifications Edexcel and BTEC qualifications come from Pearson, the world s leading learning company. We provide a wide range of qualifications

### Earth & Space Voyage Content Unit Report. Grades: 8 States: Nevada Content Standards

Earth & Space Voyage Content Unit Report Grades: 8 States: Unit 1: Exploring the Earth- Teacher's Guide pages 5B-18B: CONTENT STANDARD NV.N.8.A. Scientific Inquiry (Nature of Unifying graphs. opinion.

### Introduction. In Physics light is referred to as electromagnetic radiation which is a natural phenomenon that can

Introduction In Physics light is referred to as electromagnetic radiation which is a natural phenomenon that can also be produced and detected through technological means. It has proven invaluable for