PHYS320(O) ilab Experiment 4 Instructions Diffraction and Interference: Measurement of the Wavelength of Light
|
|
- Antonia Stewart
- 6 years ago
- Views:
Transcription
1 Objective: PHYS320(O) ilab Experiment 4 Instructions Diffraction and Interference: Measurement of the Wavelength of Light The purpose of this activity is to determine the wavelength of the light emitted by a diode laser and LEDs (light emitting diodes). Parts and Equipment Required: Laser pointer Binder clip Grating or lens stand Diffraction gratings (500 lines per mm and 1000 lines per mm) 5 3 by 5 (or larger) index cards Kit box, lid, or other large white surface Solderless breadboard Red, yellow, green, and blue LEDs 220 ohm resistor 9 V battery and battery clip Electrical tape Hobby knife or other sharp knife Ruler marked in centimeters or vernier caliper Introduction: A transmission grating is a piece of material that has a pattern of a large number of equally spaced lines or grooves. When monochromatic light shines on the grating, each groove diffracts the light, and each wave front interferes with the wave fronts from all the other grooves (see Figure 1). PHYS320 ilab (O) Instructions Page 1 Experiment 4
2 Figure 1 Diagram of diffraction grating showing wave fronts and direction of beam travel. Each light wave will be in phase when it arrives at a point at an angle θ m, such that: dsinθ m = mλ, where d is the grating spacing, λ is the wavelength of the light, and m is an integer that denotes the order of the fringe. The result is a distinct interference pattern that can be projected on a screen, as shown in Figure 2. Figure 2 Diagram of diffraction experiment showing position of interference fringes PHYS320 ilab (O) Instructions Page 2 Experiment 4
3 If the line spacing is known, then measurements of the distance between orders and the central maximum can be used to calculate the wavelength of the light. Predictions: How does the diffraction pattern change as the distance between the laser and the diffraction grating changes? How does the pattern change as the distance between the grating and the projection screen changes? Procedure: I. Part 1: Set-up 1. Set up for this experiment as shown in Figure 3. Figure 3 Set-up for Part 1 of Lab 4 2. Elevate the laser pointer using a binder clip as a stand. You might need to use a book or pad of paper to adjust the height of the laser. Place the 1000 lines/mm diffraction grating in a grating stand. 3. Position the kit box on the opposite side of the grating as the laser, cm from the grating. You will use this as a screen to mark the position of diffraction maxima. NOTE: You may also affix a piece of paper to the box surface for easy removal and measurement. WARNING: DO NOT LOOK DIRECTLY INTO THE LASER! 4. Adjust the position of the binder clip so that the laser is on. Shine the laser light through the diffraction grating and on to the kit box. You should see a central bright spot of light and two dimmer spots to the left and right of the central spot. The spots to the left and right of the central spot are the first order interference maxima. You might see additional dimmer spots spaced further away. These are the second order interference maxima. Vary the distance between the grating and the screen and the distance between the laser and the grating. Record your observations on the data sheet. PHYS320 ilab (O) Instructions Page 3 Experiment 4
4 II. Part 1: Data Collection 5. Set the grating a convenient distance between 10 and 20 cm from the screen. Carefully measure the screen-grating distance and record it as L on your datasheet. You may wish to tape the grating stand to the table surface so that it does not move. 6. Mark the locations of the central spot and the two first order spots with a small x on the screen. Carefully measure the distance between the left first order spot and the central spot. Then measure the distance between the right first order spot and the central spot. Record these distances as y in the table on your data sheet. 7. Repeat for the 500 lines/mm grating. III. Part 1: Analysis 8. Calculate the diffraction angle θ for each measurement by using the formula: θ = tan 1 y L 9. Use the data from the red laser to compute the laser wavelength for each measurement with the formula: λ = d sin(θ) where d is the grating spacing. The grating spacing for each grating is the reciprocal of the number of lines per mm. Calculate the average wavelength. Record the known wavelength of the laser and calculate the percent discrepancy of your measurement. IV. Part 2: Set-up 1. Use a hobby knife or some other sharp blade to carefully cut an approximately 1 mm by 20 mm slit in the center of an index card. Use electrical tape to cover (except for the slit) one side of the card to stiffen the card and to block light. The final result should look similar to Figure 4. Figure 4 Index card with 1mm by 20 mm slit covered with electrical tape 2. Insert the card into the same grating stand as the 500 lines/mm diffraction grating and set it aside. PHYS320 ilab (O) Instructions Page 4 Experiment 4
5 3. Use the solderless breadboard, a 220 ohm resistor, a red LED, the 9V battery, 9V battery clip, and a short piece of hook-up wire (optional) to build the circuit shown in Figure 5. Figure 5 LED circuit diagram 220 Ω 9V LED 4. LEDs conduct current in only one direction. Be sure that the shorter lead (flat side of the plastic case) is connected to the negative (minus) terminal of the battery. Photographs of the completed circuit are shown in Figures 6 and 7. Figure 6 LED circuit on breadboard PHYS320 ilab (O) Instructions Page 5 Experiment 4
6 Figure 7 LED circuit with battery You may wish to use the binder clip as a stand to hold the breadboard vertically. Make sure that the LED lights up when the battery is connected. 5. Insert an index card into a grating stand to use as a screen. Stand the breadboard vertically and set the stand with the slit and grating between the breadboard and screen. Adjust the position of the circuit so that the light from the LED shines through the slit and onto the screen. The set-up is shown in Figure 8. Figure 8 Set-up for Part 2 of Lab 4 6. The first order interference maxima will be very dim. You will need to set up this experiment in a room that can be made as dark as possible. If too much light comes in through a window, you might have to wait until night to complete this part of the experiment. PHYS320 ilab (O) Instructions Page 6 Experiment 4
7 7. Adjust the distance between the screen and the grating until the first order fringes for the red LED are just at the edges of the index card screen. Tape the grating stand and the stand with the screen to the table so that they cannot move. Carefully measure the distance between the screen and grating. Record this distance as L on your datasheet. 8. Mark the center position of the central, left, and right fringes with a pencil. Remove the index card and carefully measure the distance between the left fringe and the central fringe and between the right fringe and the central fringe. Record these distances as y in the table for the red LED. 9. Replace the red LED with the yellow, green, and blue LEDs in turn and repeat the procedure. 10. (Optional) Try using the amber and white LEDs. Observe the result. V. Part 2: Analysis 11. Calculate the diffraction angle θ for each measurement by using the formula: θ = tan 1 y L 12. Use the data to calculate wavelength for each LED with the formula: λ = d sin(θ) where d is the grating spacing. The grating spacing for each grating is the reciprocal of the number of lines per mm. Calculate the average wavelength for each LED. 13. Complete the data sheet and turn it in to your instructor. PHYS320 ilab (O) Instructions Page 7 Experiment 4
Physics 4. Diffraction. Prepared by Vince Zaccone For Campus Learning Assistance Services at UCSB
Physics 4 Diffraction Diffraction When light encounters an obstacle it will exhibit diffraction effects as the light bends around the object or passes through a narrow opening. Notice the alternating bright
More informationPHYS General Physics II Lab Diffraction Grating
1 PHYS 1040 - General Physics II Lab Diffraction Grating In this lab you will perform an experiment to understand the interference of light waves when they pass through a diffraction grating and to determine
More informationPhysicsAndMathsTutor.com 1
PhysicsAndMathsTutor.com 1 Q1. Just over two hundred years ago Thomas Young demonstrated the interference of light by illuminating two closely spaced narrow slits with light from a single light source.
More informationMeasuring with Interference and Diffraction
Team Physics 312 10B Lab #3 Date: Name: Table/Team: Measuring with Interference and Diffraction Purpose: In this activity you will accurately measure the width of a human hair using the interference and
More informationBuild Spectroscope. This activity is suitable for Middle School or High School Students. State Standards Met
Build Spectroscope Build Spectroscope Abstract Students learn to how to construct, modify, and calibrate a spectrometer. Students also learn the governing equation of diffraction, and ways in which to
More informationActivity 1: Diffraction of Light
Activity 1: Diffraction of Light When laser light passes through a small slit, it forms a diffraction pattern of bright and dark fringes (as shown below). The central bright fringe is wider than the others.
More informationPhy Ph s y 102 Lecture Lectur 22 Interference 1
Phys 102 Lecture 22 Interference 1 Physics 102 lectures on light Light as a wave Lecture 15 EM waves Lecture 16 Polarization Lecture 22 & 23 Interference& diffraction Light as a ray Lecture 17 Introduction
More informationMirrors and Lenses. Images can be formed by reflection from mirrors. Images can be formed by refraction through lenses.
Mirrors and Lenses Images can be formed by reflection from mirrors. Images can be formed by refraction through lenses. Notation for Mirrors and Lenses The object distance is the distance from the object
More informationAP B Webreview ch 24 diffraction and interference
Name: Class: _ Date: _ AP B Webreview ch 24 diffraction and interference Multiple Choice Identify the choice that best completes the statement or answers the question.. In order to produce a sustained
More informationPhysics 2020 Lab 9 Wave Interference
Physics 2020 Lab 9 Wave Interference Name Section Tues Wed Thu 8am 10am 12pm 2pm 4pm Introduction Consider the four pictures shown below, showing pure yellow lights shining toward a screen. In pictures
More informationChapter 27. Interference and the Wave Nature of Light
7.1 The Principle of Linear Superposition Chapter 7 When two or more light waves pass through a given point, their electric fields combine according to the principle of superposition. Interference and
More informationNo Brain Too Small PHYSICS
WAVES: WAVES BEHAVIOUR QUESTIONS No Brain Too Small PHYSICS DIFFRACTION GRATINGS (2016;3) Moana is doing an experiment in the laboratory. She shines a laser beam at a double slit and observes an interference
More informationPHY 431 Homework Set #5 Due Nov. 20 at the start of class
PHY 431 Homework Set #5 Due Nov. 0 at the start of class 1) Newton s rings (10%) The radius of curvature of the convex surface of a plano-convex lens is 30 cm. The lens is placed with its convex side down
More informationCollege Physics II Lab 3: Microwave Optics
ACTIVITY 1: RESONANT CAVITY College Physics II Lab 3: Microwave Optics Taner Edis with Peter Rolnick Spring 2018 We will be dealing with microwaves, a kind of electromagnetic radiation with wavelengths
More informationBasic Optics System OS-8515C
40 50 30 60 20 70 10 80 0 90 80 10 20 70 T 30 60 40 50 50 40 60 30 70 20 80 90 90 80 BASIC OPTICS RAY TABLE 10 0 10 70 20 60 50 40 30 Instruction Manual with Experiment Guide and Teachers Notes 012-09900B
More informationOption G 4:Diffraction
Name: Date: Option G 4:Diffraction 1. This question is about optical resolution. The two point sources shown in the diagram below (not to scale) emit light of the same frequency. The light is incident
More informationDiffraction Single-slit Double-slit Diffraction grating Limit on resolution X-ray diffraction. Phys 2435: Chap. 36, Pg 1
Diffraction Single-slit Double-slit Diffraction grating Limit on resolution X-ray diffraction Phys 2435: Chap. 36, Pg 1 Single Slit New Topic Phys 2435: Chap. 36, Pg 2 Diffraction: bending of light around
More informationThe Wave Nature of Light
The Wave Nature of Light Physics 102 Lecture 7 4 April 2002 Pick up Grating & Foil & Pin 4 Apr 2002 Physics 102 Lecture 7 1 Light acts like a wave! Last week we saw that light travels from place to place
More informationPractice Problems for Chapter 25-26
Practice Problems for Chapter 25-26 1. What are coherent waves? 2. Describe diffraction grating 3. What are interference fringes? 4. What does monochromatic light mean? 5. What does the Rayleigh Criterion
More informationExam 3--PHYS 2021M-Spring 2009
Name: Class: Date: Exam 3--PHYS 2021M-Spring 2009 Multiple Choice Identify the choice that best completes the statement or answers the question Each question is worth 2 points 1 Images made by mirrors
More informationPhysics 4C. Chapter 36: Diffraction. Diffraction. Diffraction. Diffraction
Physics 4C Diffraction Chapter 36: Diffraction Slide 1 Slide 2 Slide 3 Slide 4 Slide 5 Slide 6 Slide 7 Slide 8 Slide 9 Slide 10 Slide 11 Slide 12 Slide 13 Slide 14 Slide 15 Slide 16 Slide 17 Slide 18 Slide
More informationSingle Slit Diffraction
PC1142 Physics II Single Slit Diffraction 1 Objectives Investigate the single-slit diffraction pattern produced by monochromatic laser light. Determine the wavelength of the laser light from measurements
More informationChapter 4: Fourier Optics
Chapter 4: Fourier Optics P4-1. Calculate the Fourier transform of the function rect(2x)rect(/3) The rectangular function rect(x) is given b 1 x 1/2 rect( x) when 0 x 1/2 P4-2. Assume that ( gx (, )) G
More informationPhysics 248 Spring 2009 Lab 1: Interference and Diffraction
Name Section Physics 248 Spring 2009 Lab 1: Interference and Diffraction Your TA will use this sheet to score your lab. It is to be turned in at the end of lab. You must clearly explain your reasoning
More information1 Diffraction of Microwaves
1 Diffraction of Microwaves 1.1 Purpose In this lab you will investigate the coherent scattering of electromagnetic waves from a periodic structure. The experiment is a direct analog of the Bragg diffraction
More informationChapter 17: Wave Optics. What is Light? The Models of Light 1/11/13
Chapter 17: Wave Optics Key Terms Wave model Ray model Diffraction Refraction Fringe spacing Diffraction grating Thin-film interference What is Light? Light is the chameleon of the physical world. Under
More informationChapter 36: diffraction
Chapter 36: diffraction Fresnel and Fraunhofer diffraction Diffraction from a single slit Intensity in the single slit pattern Multiple slits The Diffraction grating X-ray diffraction Circular apertures
More informationABC Math Student Copy. N. May ABC Math Student Copy. Physics Week 13(Sem. 2) Name. Light Chapter Summary Cont d 2
Page 1 of 12 Physics Week 13(Sem. 2) Name Light Chapter Summary Cont d 2 Lens Abberation Lenses can have two types of abberation, spherical and chromic. Abberation occurs when the rays forming an image
More informationExercise 8: Interference and diffraction
Physics 223 Name: Exercise 8: Interference and diffraction 1. In a two-slit Young s interference experiment, the aperture (the mask with the two slits) to screen distance is 2.0 m, and a red light of wavelength
More informationPhysics. Light Waves & Physical Optics
Physics Light Waves & Physical Optics Physical Optics Physical optics or wave optics, involves the effects of light waves that are not related to the geometric ray optics covered previously. We will use
More informationLight Waves. Aim: To observe how light behaves and come up with rules that describe this behavior.
Light Waves Name Date Aim: To observe how light behaves and come up with rules that describe this behavior. Materials: Laser Protractor 2 mirrors Acrylic block Diffraction slide Ruler Wood block White
More informationPhysics 202, Lecture 28
Physics 202, Lecture 28 Today s Topics Michelson Interferometer iffraction Single Slit iffraction Multi-Slit Interference iffraction on Circular Apertures The Rayleigh Criterion Wave Superposition Using
More informationReflection of Light, 8/8/2014, Optics
Grade Level: 8 th Grade Physical Science Reflection of Light, 8/8/2014, Optics Duration: 2 days SOL(s): PS.9 The student will investigate and understand the characteristics of transverse waves. Key concepts
More informationSingle-Slit Diffraction. = m, (Eq. 1)
Single-Slit Diffraction Experimental Objectives To observe the interference pattern formed by monochromatic light passing through a single slit. Compare the diffraction patterns of a single-slit and a
More informationExam 3--PHYS 102--S10
ame: Exam 3--PHYS 02--S0 Multiple Choice Identify the choice that best completes the statement or answers the question.. At an intersection of hospital hallways, a convex mirror is mounted high on a wall
More informationImaging Systems Laboratory II. Laboratory 8: The Michelson Interferometer / Diffraction April 30 & May 02, 2002
1051-232 Imaging Systems Laboratory II Laboratory 8: The Michelson Interferometer / Diffraction April 30 & May 02, 2002 Abstract. In the last lab, you saw that coherent light from two different locations
More informationThis relates to the frequency by: Then the result for C in terms of the given quantities is:
. An AM rao station broadcasts at a frequency f = 830 khz. You receive that broadcast using a simple LC circuit which has an inductor L=85.0 mh and a variable capacitor. a) (8 points) You tune your car
More informationFriday 18 January 2013 Morning
Friday 18 January 2013 Morning AS GCE PHYSICS A G482/01 Electrons, Waves and Photons *G411580113* Candidates answer on the Question Paper. OCR supplied materials: Data, Formulae and Relationships Booklet
More informationIn the Figure above, the fringe at point P on the screen will be:
Coherent, monochromatic plane waves: In the Figure above, the fringe at point P on the screen will be: 1. An interference maximum 2. An interference minimum 3. Don t have a clue Answer: 2. Interference
More informationEET 150 Introduction to EET Lab Activity 1 Resistor Color Codes and Resistor Value Measurement
Required Parts, Software and Equipment Parts 20 assorted 1/4 watt resistors 5% tolerance Equipment Required Solderless Experimenters' Board Digital Multimeter Optional Alligator clip leads hookup wire
More informationA Level. A Level Physics. WAVES: Combining Waves (Answers) AQA. Name: Total Marks: /30
Visit http://www.mathsmadeeasy.co.uk/ for more fantastic resources. AQA A Level A Level Physics WAVES: Combining Waves (Answers) Name: Total Marks: /30 Maths Made Easy Complete Tuition Ltd 2017 1. To produce
More informationLab 10 - MICROWAVE AND LIGHT INTERFERENCE
179 Name Date Partners Lab 10 - MICROWAVE AND LIGHT INTERFERENCE Amazing pictures of the microwave radiation from the universe have helped us determine the universe is 13.7 billion years old. This picture
More informationPhysics 1C Lecture 27B
Physics 1C Lecture 27B Single Slit Interference! Example! Light of wavelength 750nm passes through a slit 1.00μm wide. How wide is the central maximum in centimeters, in a Fraunhofer diffraction pattern
More informationUnit 8: Light and Optics
Objectives Unit 8: Light and Optics Explain why we see colors as combinations of three primary colors. Explain the dispersion of light by a prism. Understand how lenses and mirrors work. Explain thermal
More informationActivity 12 1: Determine the Axis of Polarization of a Piece of Polaroid
Home Lab Lab 12 Polarization Overview Home Lab 12 Polarization Activity 12 1: Determine the Axis of Polarization of a Piece of Polaroid Objective: To find the axis of polarization of the Polaroid sheet
More informationTA/TI survey. Phy Phy
TA/TI survey https://webapps.pas.rochester.edu/secure/phpq/ Phy121 7 60 73 81 Phy123 1 6 11 18 Chapter 35 Diffraction and Polarization Double- Slit Experiment destructive interference Two sources of light
More informationFRAUNHOFER AND FRESNEL DIFFRACTION IN ONE DIMENSION
FRAUNHOFER AND FRESNEL DIFFRACTION IN ONE DIMENSION Revised November 15, 2017 INTRODUCTION The simplest and most commonly described examples of diffraction and interference from two-dimensional apertures
More informationLO - Lab #05 - How are images formed from light?
LO - Lab #05 - Helpful Definitions: The normal direction to a surface is defined as the direction that is perpendicular to a surface. For example, place this page flat on the table and then stand your
More informationPES 2130 Fall 2014, Spendier Lecture 23/Page 1
PS 13 Fall 14, Spendier Lecture 3/Page 1 Lecture today: Chapter 35 Interference 1) Intensity in Double-Slit Interference ) Thin Film Interference Announcements: - Shortened office hours this Thursday (1-1:3am).
More informationDiffraction. Interference with more than 2 beams. Diffraction gratings. Diffraction by an aperture. Diffraction of a laser beam
Diffraction Interference with more than 2 beams 3, 4, 5 beams Large number of beams Diffraction gratings Equation Uses Diffraction by an aperture Huygen s principle again, Fresnel zones, Arago s spot Qualitative
More informationPhysics 1520, Spring 2013 Quiz 2, Form: A
Physics 1520, Spring 2013 Quiz 2, Form: A Name: Date: Section 1. Exercises 1. The index of refraction of a certain type of glass for red light is 1.52. For violet light, it is 1.54. Which color of light,
More informationPHYS 1112L - Introductory Physics Laboratory II
PHYS 1112L - Introductory Physics Laboratory II Laboratory Advanced Sheet Thin Lenses 1. Objectives. The objectives of this laboratory are a. to be able to measure the focal length of a converging lens.
More informationA Level. A Level Physics. WAVES: Combining Waves (Answers) OCR. Name: Total Marks: /30
Visit http://www.mathsmadeeasy.co.uk/ for more fantastic resources. OCR A Level A Level Physics WAVES: Combining Waves (Answers) Name: Total Marks: /30 Maths Made Easy Complete Tuition Ltd 2017 1. To produce
More informationa) (6) How much time in milliseconds does the signal require to travel from the satellite to the dish antenna?
General Physics II Exam 3 - Chs. 22 25 - EM Waves & Optics April, 203 Name Rec. Instr. Rec. Time For full credit, make your work clear. Show formulas used, essential steps, and results with correct units
More informationPhysical Optics. Diffraction.
Physical Optics. Diffraction. Interference Young s interference experiment Thin films Coherence and incoherence Michelson interferometer Wave-like characteristics of light Huygens-Fresnel principle Interference.
More informationEnd-of-Chapter Exercises
End-of-Chapter Exercises Exercises 1 12 are conceptual questions designed to see whether you understand the main concepts in the chapter. 1. Red laser light shines on a double slit, creating a pattern
More informationPHYS2090 OPTICAL PHYSICS Laboratory Microwaves
PHYS2090 OPTICAL PHYSICS Laboratory Microwaves Reference Hecht, Optics, (Addison-Wesley) 1. Introduction Interference and diffraction are commonly observed in the optical regime. As wave-particle duality
More informationBuilding a simple spectroscope
Quick and simple laser communicator. Make your own 3D pictures in minutes. Making permanent rainbows. Building the impossible kaleidoscope. Building a simple spectroscope. Make a solar hotdog cooker. Going
More information3B SCIENTIFIC PHYSICS
3B SCIENTIFIC PHYSICS Equipment Set for Wave Optics with Laser U17303 Instruction sheet 10/08 Alf 1. Safety instructions The laser emits visible radiation at a wavelength of 635 nm with a maximum power
More information2. Which pair of lettered points lie on the same nodal line? a) v and t b) x and r c) x and w d) u and y e) v and u 2 ANS: C
1 Conceptual Questions 1. Which pair of lettered points lie on the central maximum? a) v and t b) x and z c) x and w d) u and y e) v and u 1 ANS: E The central maximum lies on the perpendicular bisector.
More informationLASER SAFETY. Lasers are part of everyday life and most households currently have them built in to many devices such as DVDs, CDs and computers.
LASER SAFETY Lasers are part of everyday life and most households currently have them built in to many devices such as DVDs, CDs and computers. The most common use of lasers is in the scanners used in
More informationChapter 24. The Wave Nature of Light
Ch-24-1 Chapter 24 The Wave Nature of Light Questions 1. Does Huygens principle apply to sound waves? To water waves? Explain how Huygens principle makes sense for water waves, where each point vibrates
More informationPhysics 197 Lab 8: Interference
Physics 197 Lab 8: Interference Equipment: Item Part # per Team # of Teams Bottle of Bubble Solution with dipper 1 8 8 Wine Glass 1 8 8 Straw 1 8 8 Optics Bench PASCO OS-8518 1 8 8 Red Diode Laser and
More informationPhysics 102 Exam 3 Fall Last Name: First Name Network-ID
Physics 102 Exam 3 Fall 2013 Last Name: First Name Network-ID Discussion Section: Discussion TA Name: Turn off your cell phone and put it out of sight. Keep your calculator on your own desk. Calculators
More informationLOS 1 LASER OPTICS SET
LOS 1 LASER OPTICS SET Contents 1 Introduction 3 2 Light interference 5 2.1 Light interference on a thin glass plate 6 2.2 Michelson s interferometer 7 3 Light diffraction 13 3.1 Light diffraction on a
More informationAP Physics Problems -- Waves and Light
AP Physics Problems -- Waves and Light 1. 1974-3 (Geometric Optics) An object 1.0 cm high is placed 4 cm away from a converging lens having a focal length of 3 cm. a. Sketch a principal ray diagram for
More informationChapter 7. Optical Measurement and Interferometry
Chapter 7 Optical Measurement and Interferometry 1 Introduction Optical measurement provides a simple, easy, accurate and reliable means for carrying out inspection and measurements in the industry the
More informationLab 10 - Microwave and Light Interference
Lab 10 Microwave and Light Interference L10-1 Name Date Partners Lab 10 - Microwave and Light Interference Amazing pictures of the microwave radiation from the universe have helped us determine the universe
More informationLab 10 - MICROWAVE AND LIGHT INTERFERENCE
181 Name Date Partners Lab 10 - MICROWAVE AND LIGHT INTERFERENCE Amazing pictures of the microwave radiation from the universe have helped us determine the universe is 13.7 billion years old. This picture
More informationEpisode 323: Diffraction
Episode 323: Diffraction Note the spelling - double ff. The first recorded observation of diffraction was by Grimaldi in 1665. The shadows cast by light sources were not quite the same size as the anticipated
More informationPrac%ce Quiz 2. These are Q s from old quizzes. I do not guarantee that the Q s on this year s quiz will be the same, or even similar.
Prac%ce Quiz 2 These are Q s from old quizzes. I do not guarantee that the Q s on this year s quiz will be the same, or even similar. A laser beam shines vertically upwards. What laser power is needed
More informationLECTURE 13 DIFFRACTION. Instructor: Kazumi Tolich
LECTURE 13 DIFFRACTION Instructor: Kazumi Tolich Lecture 13 2 Reading chapter 33-4 & 33-6 to 33-7 Single slit diffraction Two slit interference-diffraction Fraunhofer and Fresnel diffraction Diffraction
More informationFriday 18 January 2013 Morning
Friday 18 January 2013 Morning AS GCE PHYSICS A G482/01 Electrons, Waves and Photons *G411580113* Candidates answer on the Question Paper. OCR supplied materials: Data, Formulae and Relationships Booklet
More informationClass XII - Physics Wave Optics Chapter-wise Problems
Class XII - hysics Wave Optics Chapter-wise roblems Multiple Choice Question :- 10.1 Consider a light beam incident from air to a glass slab at Brewster s angle as shown in Fig. 10.1. A polaroid is placed
More informationA single source. Interference...
Water Waves Water Waves A single source Interference... Two sources Interference... If two people walk toward a point and both start on the same foot-- d 10 steps 11 steps y At the point where they meet
More informationPart 1: Standing Waves - Measuring Wavelengths
Experiment 7 The Microwave experiment Aim: This experiment uses microwaves in order to demonstrate the formation of standing waves, verifying the wavelength λ of the microwaves as well as diffraction from
More information3B SCIENTIFIC PHYSICS
3B SCIENTIFIC PHYSICS Equipment Set for Wave Optics with Laser 1003053 Instruction sheet 06/18 Alf 1. Safety instructions The laser emits visible radiation at a wavelength of 635 nm with a maximum power
More informationPHYS 202. Lecture 18 Professor Stephen Thornton April 4, 2006
PHYS 202 Lecture 18 Professor Stephen Thornton April 4, 2006 Reading Quiz: Can light, say visible light, bend around corners? 1) Yes. 2) Sometimes, but it depends on the wavelength. 3) Sometimes, but it
More informationSpeed of light E Introduction
Notice: All measurements and calculated values must be presented with SI units with an appropriate number of significant digits. Uncertainties required only when explicitly asked for. 1.0 Introduction
More informationChapter Wave Optics. MockTime.com. Ans: (d)
Chapter Wave Optics Q1. Which one of the following phenomena is not explained by Huygen s construction of wave front? [1988] (a) Refraction Reflection Diffraction Origin of spectra Q2. Which of the following
More informationTeaching Time: Two 50-minute periods
Lesson Summary In this lesson, students will build an open spectrograph to calculate the angle the light is transmitted through a holographic diffraction grating. After finding the desired angles, the
More informationPHYSICS 1211 LAB MANUAL
PHYSICS 1211 LAB MANUAL ACKOWLEDGMENTS Experiments 1 8 in the Physics 1211 Lab Manual were adapted from the Physics 112 Lab Manual, which was the work of Dr. Michael Ziegler, Prof. Tom Gramila, Prof.
More informationLecture Outline Chapter 28. Physics, 4 th Edition James S. Walker. Copyright 2010 Pearson Education, Inc.
Lecture Outline Chapter 28 Physics, 4 th Edition James S. Walker Chapter 28 Physical Optics: Interference and Diffraction Units of Chapter 28 Superposition and Interference Young s Two-Slit Experiment
More informationChapters 11, 12, 24. Refraction and Interference of Waves
Chapters 11, 12, 24 Refraction and Interference of Waves Beats Two overlapping waves with slightly different frequencies gives rise to the phenomena of beats. Beats The beat frequency is the difference
More informationPhysics 3340 Spring 2005
Physics 3340 Spring 2005 Holography Purpose The goal of this experiment is to learn the basics of holography by making a two-beam transmission hologram. Introduction A conventional photograph registers
More informationSingle, Double And N-Slit Diffraction. B.Tech I
Single, Double And N-Slit Diffraction B.Tech I Diffraction by a Single Slit or Disk If light is a wave, it will diffract around a single slit or obstacle. Diffraction by a Single Slit or Disk The resulting
More informationb) (4) If you could look at a snapshot of the waves, how far apart in space are two successive positive peaks of the electric field?
General Physics II Exam 3 - Chs. 22 25 - EM Waves & Optics October 20, 206 Name Rec. Instr. Rec. Time For full credit, make your work clear. Show formulas used, essential steps, and results with correct
More informationGeneral Physics Laboratory Experiment Report 2nd Semester, Year 2018
PAGE 1/13 Exp. #2-7 : Measurement of the Characteristics of the Light Interference by Using Double Slits and a Computer Interface Measurement of the Light Wavelength and the Index of Refraction of the
More informationLecture 2: Interference
Lecture 2: Interference λ S 1 d S 2 Lecture 2, p.1 Today Interference of sound waves Two-slit interference Lecture 2, p.2 Review: Wave Summary ( ) ( ) The formula y x,t = Acoskx ωt describes a harmonic
More informationDerrek Wilson. Recreating the Double Slit Experiment. UPII Spring 2009
Derrek Wilson Recreating the Double Slit Experiment UPII Spring 2009 For my honors project in University Physics II, I decided to recreate Thomas Young s Double Slit Experiment. Young first performed this
More informationPRINCIPLE PROCEDURE ACTIVITY. AIM To observe diffraction of light due to a thin slit.
ACTIVITY 12 AIM To observe diffraction of light due to a thin slit. APPARATUS AND MATERIAL REQUIRED Two razor blades, one adhesive tape/cello-tape, source of light (electric bulb/ laser pencil), a piece
More informationGrating-Stabilized Diode Laser (for 1064nm)
Grating-Stabilized Diode Laser (for 1064nm), July 2011 This documentation describes the assembly of a tunable laser under the Littrow configuration, using a diffraction grating as the wavelength-selective
More informationGrating-Stabilized Diode Laser (for 1064nm)
Grating-Stabilized Diode Laser (for 1064nm), July 2011 This documentation describes the assembly of a tunable laser under the Littrow configuration, using a diffraction grating as the wavelength-selective
More informationAS Physics Unit 5 - Waves 1
AS Physics Unit 5 - Waves 1 WHAT IS WAVE MOTION? The wave motion is a means of transferring energy from one point to another without the transfer of any matter between the points. Waves may be classified
More informationLAB 11 Color and Light
Cabrillo College Name LAB 11 Color and Light Bring colored pencils or crayons to lab if you already have some. What to learn and explore In the previous lab, we discovered that some sounds are simple,
More informationSlide 1 / 99. Electromagnetic Waves
Slide 1 / 99 Electromagnetic Waves Slide 2 / 99 The Nature of Light: Wave or Particle The nature of light has been debated for thousands of years. In the 1600's, Newton argued that light was a stream of
More informationLab 12 Microwave Optics.
b Lab 12 Microwave Optics. CAUTION: The output power of the microwave transmitter is well below standard safety levels. Nevertheless, do not look directly into the microwave horn at close range when the
More information1 Propagating Light. Reflection and Refraction
PRACTICE FINAL 1 1) An ac source of period T and maximum voltage V is connected to a single unknown ideal element that is either a resistor, and inductor, or a capacitor. At time t = 0 the voltage is zero.
More informationEK 307 Lab: Light-Emitting Diodes
EK 307 Lab: Light-Emitting Diodes Laboratory Goal: To explore the characteristics of the light emitting diode. Learning Objectives: Voltage, current, power, and instrumentation. Suggested Tools: Voltage
More informationUsing double-exposure holographic techniques to evaluate the deformation of an aluminum can under stress
Using double-exposure holographic techniques to evaluate the deformation of an aluminum can under stress Maggie Lankford Physics Department, The College of Wooster, Wooster, Ohio 44691, USA (Dated: December
More information