DOCSLIB.ORG

DOCPMENT RESUME 8E 015 538 TITLE Project Physics Teacher Guide 4, Light and INSTITUTION Harvard Univ., Cambridge, Mass. Harvard

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
DOCPMENT RESUME 8E 015 538 TITLE Project Physics Teacher Guide 4, Light and INSTITUTION Harvard Univ., Cambridge, Mass. Harvard DOCPMENT RESUME ED 071 901 8E 015 538 TITLE Project Physics Teacher Guide 4, Light and Electromagnet ism. INSTITUTION Harvard Univ., Cambridge, Mass. Harvard Project Physics. SPONS AGENCY Office of Education (DHEW), Washington, D.C.Bureau of Research. BUREAU NO BR-5-1038 PUB DATE 68 CONTRACT OEC-5-10-058 NOTE 277p.; Authorized Interim Version EDRS PRICE MF-S0.65 HC-S9.87 DESCRIPTORS *Electricity; Instructional Materials; Multimedia Instruction; *Optics; *Physics; Science Activities; Secondary Grades; *secondary School Science; *Teach...rig Guides; Teaching Procedures IDENTIFIERS Harvard Project Physics ABSTRACT Teaching procedures of Project Physics Unit 4are presented to help teachers make effective use of learning materials. Unit cotcents are discussed in courtaction with teaching aidlists, multi-media schedules, schedule blocks, and resources charts. Brief summaries are made, for transparencies, 16mm films, and reader articles. Included is information about the background and development of each unit chapter, procedures used in demonstrations, apparatus operations, notes on the student handbook, and explanation of film loops. Additional articles are concerned with electromagnetic spectra, field concepts, Oersted's own eu:count of his discovery, .Romerls work, and mlectron* series. Current balances and microwave apparatus are analyzed, and a bibliography of references including that of photographic instrumentation is given. Solutions to study guides are provided in detail, and answers to test itemsare suggested. The fourth unit of the text, along with marginal comments on eachsection,is also compiled in the manual. The work of Harvard Project Physics has been financially supported bythe Carnegie Corporation of New York, the Ford Foundation, the National Science Foundation, the Alfred P. Sloan Foundation, the Unii'-ed StatesOffice of Education, and Harvard University. (CC) r 415.W.T, 0 F o ()77cfl I I r V V. 0 IC)CD CD CD CD r;p U S DEPARTMENT OF HEALTH EDUCATION & WELFARE OFFICE OF EDUCATION THIS DOCUMENT HAS BEEN REPRO DUCED EXACTLY AS RECEIVED FROM THE PERSON OR ORGANIZATION ORIG INATING IT POINTS OF VIEW OR OPN IONS STATED DO NOT NECESSARILY REPRESENT OFFICIAL OFFICE OF EDU CATION POSITION OR POLICY Project Physics Teacher's Guide An Introduction to Physics4Light and Electromagnetism Authorized Interim Version 1968-69 Distributed by Holt, Rinehart and Winston, Inc.New York Toronto This teacher guide is the authorized interim version of one of the many in- structional materials being developed by Harvard Project Physics, including text units, laboratory experiments, and read- ers. Its development has profited from the help of many of the colleagues listed at the front of the text units. Copyright © 1968, Project Physics Incorporated. Copyright is claimed until December 31, 1968. After December 31, 1968, all por- tions of this work not identified herein as the subject of previous copyright shall be in the public domain.The authorized interim version of the Harvard Project Physics course is being distributed at cost by Holt, Rinehart and Winston, Inc. by arrangement with Project Physics Incorp rated, a non-profit educational organization. All persons making use of any part of these materials are requested to acknowl- edge the source and the financial support given to Project Physics by the agencies named below, and to include a statement that the publication of such material is not necessari2y enCorsed by Harvard Project Physics or any of the authors of this work. The work of Harvard Project Physics has been financia:..y supported by the Carnegie Corporation of New York, the Ford Founda- tion, the National Science Foundation, the Alfred P. Sloan Foundation, the United States Office of Education and Harvard University. 03-080019-6 90123 69 9876543 Unit Overview Overview of Unit 4 1 Teaching Aids (list of) 1 Multi-Media Schedule Unit 4 Multi-Media Schedule 2 Details of the Multi-Media Schedule 3 Organization Pages (yellow) Schedule Blocks Resource Charts Experiment Summaries Chapter 13 5 Chapter 14 9 Chapter 15 13 Chapter 16 17 Study Guide Brief answers 21 Solutions to Chapter 13 23 Solutions to Chapter 14 27 Solutions to Chapter 15 32 Solutions to Chapter 16 35 Background and Development Chapter 13 38 enapter 14 42 Chapter 15 44 Chapter 16 45 Aid Summaries Transparencies 47 Film Loops 47 16mm Films 47 Reader 48 Demonstrations D47 Some Electrostatic Demonstrations 51 D48 The Electrophorous 53 D49 Currents and Forces 54 D50 Currents, Magnets and Forces 56 D51 Electric Fields 57 D52 Demonstrations and Experiments with Microwaves 57 Film Loop Notes L41 Standing Electromagnetic Waves 61 Experiment Notes E32* Young's ExperimentWavelength of Light 63 E33* Electric Forces I 63 E34 Electric Forces IICoulomb's Law 64 E35* Currents and Forces 66 E36 Currents, Magnets and Forces E37 Electron Beam Tube 70 E38* Waves, Modulation, Communication 71 Equipment Notes Current Balance 79 Microwave Apparatus 81 Additional Background Articles Electromagnetic Spectrum 85 Fields 87 Oersted 89 Romer 90 "Lectron" Series 91 Bibliography 93 Suggested Answers to Tests Test A 105 Test B 109 Test C 113 Test D 115 Index 119 Unit Overview Overview of Unit Four Experiments Chapters 12 througn 16 should be con- E32* Young's Experiment the Wavelength of sidered together as an integrated sequence Light covering selected aspects of light, waves, electricity and magnetism. The primary E33* Electric Forces I goal of the sequence is to reach a qual- itative understanding of electromagnetic E34 Electric Forces IICoulomb's Lax. waves (Chapter 16), based on the concept of electromagnetic induction. (Chapter 15), E35* Currents and Force, and merging it with the wave description Currents, Magnets and Forces of light (Chapter 13). A secondary pur- E36 pose is to provide the basic physics E37 Electron Beam Tube needed to understandne elements of electrical technology, so as to make contact with a region of applied science E38* Microwaves which has had important social conse- quences (Chapter 15). A third goal is to present some information about the interaction of electric charges with each other and with magnetic fields lransparencies (Chapter 14), not only as a prerequisite T10The Speed of Light to understanding electromagnetic induc- tion and light, but also for later use E Field Inside Conducting Spheres in Units 5 and 6 in connection with ex- T31 perimental atomic and nuclear physics. T32 Magnetic Fields and Moving Charges It should be kept in mind that while Chapters 12, 13 and 14 cover a certain T33 Forces Between Current Carriers amount of fairly standard material on waves, light and electricity, a co-pre- T34 The Electromagnetic Spectrum hensive treatment of these rubjects is not a major goal of the corse, and the temptation to delve more deeply into the topic of electric c;17-iiits should be resisted (within the context of this unit) . Reader Articles R1 Letters from Thomas Jefferson, June 1799 Films (16 mm) R2 On the Method of Theoretical Physics F30 Speed of Light R3 Experiments and Calculations Relative to F31 Introduction to Optics Physicz Optics F32Coulomb'5 Law R4 Velocity of Light 1,33 Elections in a Uniform Magnetic Field R5 Popular Applications of Polarized Light F34 Electromagnetic Waves R6 Action 't a Distance R7 Tie Electronic Revolution Demonstrations R8 The Invention of the Electric Light D47 Electrostatic Demonstrations R9 High Fidelity D48 The Electrophorus R10Future of Direct Current Power Transmi- Dn D49Currents and Forces R11 James Clerk Maxwell Part II D50Currents, Magnets and Forces R12 Collection of Maxwell's Letters D51Electric Fields R13 On the Induction of Electric Currcats D52Microwaves R14 Relationship of Electricity and Magnetism Loops R15 The Electromagnetic Field I L41Standing Electromagnetic Waves R16 Radiation Belts Around the Earth 1 Multi-Media Plan for Unit 4 2 3 LAS STATION 4 ?SSC FILM SMALL GROUP TASCaSSioN froperlres of Light Speed of Lit TEACHER DEmoNSTRATION IsLii3kta'Pailicle or a Conversion of Ener9jto TEACHER PRESENTATION' Wave ? L1911-t- Plistorof MeasurementofSygn.(esrz_iNg vcsciAssiom 1'eloct j of CISktt ( whole class) la 2a 3a 4a Teat :Cinap-Tar 13 Text Continued Chapter 13 Reader. On -Ore Meltiod of The-Text 14.I- oraticaL Finstiztn 14.6 5 6 7 8 TEACHER DEMONSTRATION E xPER 1MENT 34: TEALHER i-EcTURE STUDENTACTIVITY DAY LECTURE Coulomb's Law Current Electricity Static Electricir9 Unique EtectFtoC.tenenators Aclivi19. Make art Electric Cieneraror,, see Stadent Nand- 5a 6a 7a book and aftergicurces. Text14..7 1+,13 Reader :A lvfirror for the Text grzurt,Walter 15 I 155 9 10 11 12 1-A8 6TATlorlS LA6, STATIontS TEACHER VENtoriSTRATIoN Pr2o4 RAM Current 'Balances Currant Balances LECTURE Electric Forces and Fields Electric. ffeEds and Elec./ilea! 'Potential Enen3 9a 10a lla 'Reader The Invention of 12a Write Lab Report -Text15.6 15.9 the Electi-to1.19ht,Tosephson FiniSh 'Proojnaras 13 14 15 16 STUDENT DEmot-ISTRAnoti: TEACHER L.EcriARE FILM 'Prelude -0 'Power Hussins-Tido-e MagneticFields Small aroup .DiscHsslort on Film 13a 14a 15a reieC16( I6 s 16a Text16 i6 .6 ReaderScientific TrnasIna- Ourst de T69r1orl et al. Reading 17 18 19 20 L113RARY *RESEARCH TEACHERLECTURE - DEMON- STUDENT 17F2g56Nrano Ns STUDENT PRESENT/4110 S STRATTON ElecTrorriaytelic machines 17a 18a 19a 20a Re actir9 and Recordlils fe.0.563 and Recordin9 Finish 'RecorotivIss 21 22 23 24 TEACHER ''R2ESE47"ATIoN STATIoNS 176SC FILM CLASS DISCUSSION Maxwell's Contribution to Eleerrorrtayetf6 Waves Science Electromagnetic Waves Existence of Ike Eater andthe. Michelson -Morle Exper:wnent 21a 22a Reader: Action at a 23e 24a 11171111re for Discussionon'R-epare for discussion on Toxt: Unit4, Distance.Maxwell Day ,24, Pay 9+ ii-otoo a and Epilogue 2 Multi-Media Schedule Details of the Multi-Media Schedule 5., fluorescence under ultraviolet light 6. fluorescence by electron bombard- Day 1 ment (Crookes tube or CRO) 7, flint and steel Lab stations: Properties of ..fight 8. hand generator from old telephone and neon tube 1. Reflection. Locate image in a 9.
Load more

Recommended publications
  • WINTER 2013 - Volume 60, Number 4 the Air Force Historical Foundation Founded on May 27, 1953 by Gen Carl A
    WINTER 2013 - Volume 60, Number 4 WWW.AFHISTORICALFOUNDATION.ORG The Air Force Historical Foundation Founded on May 27, 1953 by Gen Carl A. “Tooey” Spaatz MEMBERSHIP BENEFITS and other air power pioneers, the Air Force Historical All members receive our exciting and informative Foundation (AFHF) is a nonprofi t tax exempt organization. Air Power History Journal, either electronically or It is dedicated to the preservation, perpetuation and on paper, covering: all aspects of aerospace history appropriate publication of the history and traditions of American aviation, with emphasis on the U.S. Air Force, its • Chronicles the great campaigns and predecessor organizations, and the men and women whose the great leaders lives and dreams were devoted to fl ight. The Foundation • Eyewitness accounts and historical articles serves all components of the United States Air Force— Active, Reserve and Air National Guard. • In depth resources to museums and activities, to keep members connected to the latest and AFHF strives to make available to the public and greatest events. today’s government planners and decision makers information that is relevant and informative about Preserve the legacy, stay connected: all aspects of air and space power. By doing so, the • Membership helps preserve the legacy of current Foundation hopes to assure the nation profi ts from past and future US air force personnel. experiences as it helps keep the U.S. Air Force the most modern and effective military force in the world. • Provides reliable and accurate accounts of historical events. The Foundation’s four primary activities include a quarterly journal Air Power History, a book program, a • Establish connections between generations.
    [Show full text]
  • Copyright by Paul Harold Rubinson 2008
    Copyright by Paul Harold Rubinson 2008 The Dissertation Committee for Paul Harold Rubinson certifies that this is the approved version of the following dissertation: Containing Science: The U.S. National Security State and Scientists’ Challenge to Nuclear Weapons during the Cold War Committee: —————————————————— Mark A. Lawrence, Supervisor —————————————————— Francis J. Gavin —————————————————— Bruce J. Hunt —————————————————— David M. Oshinsky —————————————————— Michael B. Stoff Containing Science: The U.S. National Security State and Scientists’ Challenge to Nuclear Weapons during the Cold War by Paul Harold Rubinson, B.A.; M.A. Dissertation Presented to the Faculty of the Graduate School of The University of Texas at Austin in Partial Fulfillment of the Requirements for the Degree of Doctor of Philosophy The University of Texas at Austin August 2008 Acknowledgements Thanks first and foremost to Mark Lawrence for his guidance, support, and enthusiasm throughout this project. It would be impossible to overstate how essential his insight and mentoring have been to this dissertation and my career in general. Just as important has been his camaraderie, which made the researching and writing of this dissertation infinitely more rewarding. Thanks as well to Bruce Hunt for his support. Especially helpful was his incisive feedback, which both encouraged me to think through my ideas more thoroughly, and reined me in when my writing overshot my argument. I offer my sincerest gratitude to the Smith Richardson Foundation and Yale University International Security Studies for the Predoctoral Fellowship that allowed me to do the bulk of the writing of this dissertation. Thanks also to the Brady-Johnson Program in Grand Strategy at Yale University, and John Gaddis and the incomparable Ann Carter-Drier at ISS.
    [Show full text]
  • The Lakehouse Inn Winery
    OPEN The The LakehouseLakehouse InnInn ALL YEAR! Visit us for your next Vacation Winery Winery or Get-Away! RIB, STEAK, & CHICKEN DINNERS Four Rooms Complete with Private Hot Tubs & Outdoor Patios Order on-line at EVERY FRIDAY & SATURDAY www.OldFirehouseWinery.com 5 - 9PM Call for Reservations N OW OPEN 7 DAYS A WEEK Enjoy Lakefront Dining at STARTING AT NOON Crosswinds Grille Serving Dinner Friday & Saturday ENTERTAINMENT NIGHTLY ALL SUMMER 5:00p.m. - 8:30pm • Sun. 4-7:30p.m. The Great Lakes LARGEST Lakefront Winery! Three Rooms at $80 One Suite at $120 www.bucciavineyard.com J OIN US FOR LIVE Live Entertainment ENTERTAINMENT ALL Fridays & Saturdays! WEEKEND! AppA Appetizersppetizersetizers && FullFull E Enntreentreetree MMenuMenuenu www.debonne.com See Back See Back Cover Back Cover for 4573 Rt. 307 East For Full Info Full Info Harpersfield, Ohio 440.415.0661 www.grandrivercellars.com 2 www.northcoastvoice.com • (440) 415-0999 July 22 - August 5, 2009 We would like to thank all of our sponsors and encourage our readers to patronize the fine businesses appearing in the North Coast VOICE. Willoughby- Denny Carleton & “You Were Funny Too” are Ryan Cutest Dog Contest & Fashion Show 4:00 – Publisher Friends will perform Everything and Chad’s First Ever CD’s! Chad 5:00 Blue Lunch 5:30 – 6:30 Latin Jazz Carol Stouder Cleveland as they take The Fine Arts has appeared on Spike TV’s “The Project 7:00 – 8:00 PM Cream of Crop. Association’s Marous Brothers Outdoor Playbook” E! Channel, and heard Come enjoy all that the Historic Warehouse Editor Stage Saturday, July 25 from 6:30-8:30 on XM’s National Lampoon’s District has to offer, and bring your friends! Sage Satori pm.
    [Show full text]
  • Reversed out (White) Reversed
    Berkeley rev.( white) Berkeley rev.( FALL 2014 reversed out (white) reversed IN THIS ISSUE Berkeley’s Space Sciences Laboratory Tabletop Physics Bringing More Women into Physics ALUMNI NEWS AND MORE! Cover: The MAVEN satellite mission uses instrumentation developed at UC Berkeley's Space Sciences Laboratory to explore the physics behind the loss of the Martian atmosphere. It’s a continuation of Berkeley astrophysicist Robert Lin’s pioneering work in solar physics. See p 7. photo credit: Lockheed Martin Physics at Berkeley 2014 Published annually by the Department of Physics Steven Boggs: Chair Anil More: Director of Administration Maria Hjelm: Director of Development, College of Letters and Science Devi Mathieu: Editor, Principal Writer Meg Coughlin: Design Additional assistance provided by Sarah Wittmer, Sylvie Mehner and Susan Houghton Department of Physics 366 LeConte Hall #7300 University of California, Berkeley Berkeley, CA 94720-7300 Copyright 2014 by The Regents of the University of California FEATURES 4 12 18 Berkeley’s Space Tabletop Physics Bringing More Women Sciences Laboratory BERKELEY THEORISTS INVENT into Physics NEW WAYS TO SEARCH FOR GOING ON SIX DECADES UC BERKELEY HOSTS THE 2014 NEW PHYSICS OF EDUCATION AND SPACE WEST COAST CONFERENCE EXPLORATION Berkeley theoretical physicists Ashvin FOR UNDERGRADUATE WOMEN Vishwanath and Surjeet Rajendran IN PHYSICS Since the Space Lab’s inception are developing new, small-scale in 1959, Berkeley physicists have Women physics students from low-energy approaches to questions played important roles in many California, Oregon, Washington, usually associated with large-scale of the nation’s space-based scientific Alaska, and Hawaii gathered on high-energy particle experiments.
    [Show full text]
  • Static Electricity Vocabulary Key Ideas Static Charge, P
    09-SciProbe9-Chap09 2/8/07 10:47 AM Page 296 CHAPTER 9 Review Static Electricity Vocabulary Key Ideas static charge, p. 274 discharge, p. 274 Static electric charges can build up on objects. electrostatics, p. 274 • A static electric charge remains at rest until it is discharged. • A neutral object has an equal number of positive and negative charges. law of electric charges, p. 275 • Neutral objects can be given static charges that are either negative (by induced charge separation, p. 277 gaining electrons) or positive (by losing electrons). charging by friction, p. 279 Neutral objects are attracted to charged objects because of separation • charging by conduction, p. 279 of charges. charging by induction, p. 280 ؊ ؊ ؊ ؉ ؉ ؊ ؉ ؉ ؊ ؉ insulator, p. 282 ؊ ؉ ؊ ؉ ؊ ؉ ؉ ؉ ؊ ؊ ؊ ؊ ؊ ؊ ؉ ؉ ؉ ؉؊؉ conductor,p.282 grounded, p. 283 Van de Graaff generator, p. 285 electric force, p. 285 (a) a neutral (b) a sphere with a (c) a sphere with a positive sphere negative charge (more charge (fewer electrons Coulomb’s law, p. 286 electrons than protons) than protons) coulomb (C), p. 286 Objects become charged by friction, conduction, and induction. • Friction causes one object to gain electrons from another object. • Some materials, such as metals, are conductors of electricity, while other materials are insulators. • An object is charged by conduction when the excess charge on one object is transferred through contact to another object. • Induction occurs when a charged object influences the charge distribution in another object. 296 Unit C Electricity NEL 09-SciProbe9-Chap09 2/8/07 10:48 AM Page 297 An electric force between static charges can either attract or repel the charges.
    [Show full text]
  • RADIO's DIGITAL DILEMMA: BROADCASTING in the 21St
    RADIO’S DIGITAL DILEMMA: BROADCASTING IN THE 21st CENTURY BY JOHN NATHAN ANDERSON DISSERTATION Submitted in partial fulfillment of the requirements for the degree of Doctor of Philosophy in Communications in the Graduate College of the University of Illinois at Urbana-Champaign, 2011 Urbana, Illinois Doctoral Committee: Professor John C. Nerone, Chair and Director of Research Associate Professor Michelle Renee Nelson Associate Professor Christian Edward Sandvig Professor Daniel Toby Schiller ii ABSTRACT The interaction of policy and technological development in the era of “convergence” is messy and fraught with contradictions. The best expression of this condition is found in the story behind the development and proliferation of digital audio broadcasting (DAB). Radio is the last of the traditional mass media to navigate the convergence phenomenon; convergence itself has an inherently disruptive effect on traditional media forms. However, in the case of radio, this disruption is mostly self-induced through the cultivation of communications policies which thwart innovation. A dramaturgical analysis of digital radio’s technological and policy development reveals that the industry’s preferred mode of navigating the convergence phenomenon is not designed to provide the medium with a realistically useful path into a 21st century convergent media environment. Instead, the diffusion of “HD Radio” is a blocking mechanism proffered to impede new competition in the terrestrial radio space. HD Radio has several critical shortfalls: it causes interference and degradation to existing analog radio signals; does not have the capability to actually advance the utility of radio beyond extant quality/performance metrics; and is a wholly proprietary technology from transmission to reception.
    [Show full text]
  • Walter Elsasser in Mind
    NATIONAL ACADEMY OF SCIENCES W A L T E R M . E LSASSER 1904—1991 A Biographical Memoir by H A R R Y RU BIN Any opinions expressed in this memoir are those of the author(s) and do not necessarily reflect the views of the National Academy of Sciences. Biographical Memoir COPYRIGHT 1995 NATIONAL ACADEMIES PRESS WASHINGTON D.C. WALTER M. ELSASSER March 20, 1904–October 14, 1991 BY HARRY RUBIN ALTER ELSASSER WAS TRAINED as a theoretical physicist Wand made several important contributions to funda- mental problems of atomic physics, including interpreta- tion of the experiments on electron scattering by Davisson and Germer as an effect of de Broglie’s electron waves and recognition of the shell structure of atomic nuclei. Circum- stances later turned his interests to geophysics, where he had important insights about the radiative transfer of heat in the atmosphere and fathered the generally accepted dy- namo theory of the earth’s magnetism. He devoted a major part of the last fifty years of his life to developing a theory of organisms, concentrating on the basic features that dis- tinguish between living and inanimate matter, and he pro- duced four books on the subject. While his contribution to biology was not widely acknowledged, he felt it would even- tually be seen as his major scientific achievement. BACKGROUND AND YOUTH Walter was born in Mannheim, Germany, the older of two children of Maurice and Johanna Elsasser. His sister, Maria, was three years younger than him. His grandparents were prosperous Jewish merchants, but his father was a law- 103 104 BIOGRAPHICAL MEMOIRS yer who was caught up in the great wave of assimilation and both parents became nonpracticing Protestants.
    [Show full text]
  • CLEVELAND BROWNS WEEKLY GAME RELEASE Regular Season Week 5, Game 5 Cleveland Browns (0-4) Vs
    CLEVELAND BROWNS WEEKLY GAME RELEASE Regular Season Week 5, Game 5 Cleveland Browns (0-4) vs. New England Patriots (3-1) DATE: Sunday, Oct. 9, 2016 SITE: FirstEnergy Stadium KICKOFF: 1:00 p.m. CAPACITY: 67,431 SURFACE: Grass NOTABLE STORYLINES SETTING THE STAGE The Browns host the New England Patriots at 1:00 p.m. on Television Sunday, Oct. 9. The Browns hold a 12-10 advantage in the all-time CBS, Channel 19, Cleveland regular season series, including a 7-4 mark at home. The last time Play-by-play: Greg Gumbel the teams played in Cleveland, the Browns captured a 34-14 win Analyst: Trent Green on Nov. 7, 2010. Sideline reporter: Jamie Erdahl At Sunday’s game the Cleveland Browns will recognize Radio Breast Cancer Awareness with continued support for the Ameri- PNC Bank Cleveland Browns Radio Network can Cancer Society through the NFL’s “A Crucial Catch: Annual Flagship stations: 92.3 The Fan (WKRK-FM), ESPN 850 WKNR, Screening Saves Lives” platform. In addition to pink gear worn WNCX (98.5 FM) on the fi eld, former RB Ernie Green (1962-68), a breast cancer Play-by-play: Jim Donovan survivor, will be honored. Analyst: Doug Dieken Sideline reporter: Nathan Zegura The Browns are leading the league in rushing yards (597) and National Radio rushing average (5.74). The Browns have rushed for 120 yards or Compass Media Networks more in four straight games for the fi rst time since 2009. The team Play-by-play: John Sadak has also registered a rushing score in four straight games for the fi rst Analyst: Mike Mayock time since 2012.
    [Show full text]
  • The Carroll News
    John Carroll University Carroll Collected The aC rroll News Student 3-15-1990 The aC rroll News- Vol. 78, No. 7 John Carroll University Follow this and additional works at: http://collected.jcu.edu/carrollnews Recommended Citation John Carroll University, "The aC rroll News- Vol. 78, No. 7" (1990). The Carroll News. 956. http://collected.jcu.edu/carrollnews/956 This Newspaper is brought to you for free and open access by the Student at Carroll Collected. It has been accepted for inclusion in The aC rroll News by an authorized administrator of Carroll Collected. For more information, please contact [email protected]. The Carroll News Vol. 78, No. 7 John Carroll University, University Heights, Ohio 44118 March 15, 1990 Pax Christi chapter forms Organization, to promote social justice student of the by Marcellus Neatly Staff Reporter yearannouced Pax Christi John Carroll re­ by Alic e Carle za11on of the Year were the Car­ ceived its charter from the Student Asst. News Editor roll News and Phi Kappa Psi. Union Tuesday, joining the ranks A member of each SU organi­ of more than 30 other Pax Christi Nominations for the Studcm zation panicipated in the voting. student chapters in the United Union Organization of the Year The award was implemented this States. Award and the SU Person of the year to recognize effons of cam­ Pax Chrisu, a Latin phrase Ycar A ward were voted upon at pus organi7.ations. meaning peace of Christ, is an the S U meeting last Tuesday. The Lynch worked on the SU Film international orgamzation origi· Sophomore Class won the organ­ Series as co-director and initiated nally formed after World War II izational award as junior Pat the Mcd1a Club, which publicizes for the sake of bringing peace to Lynch received the individual any major event through the France and Germany.
    [Show full text]
  • DOCUMENT RESUME ED 071 911 SE 015 548 TITLE Project Physics
    DOCUMENT RESUME ED 071 911 SE 015 548 TITLE Project Physics Teacher Guide 6, The Nucleus. INSTITUTION Harvard Univ., Cambridge, Mass. Harvard Project Physics. SPONS AGENCY Office of Education (DHEW) Washington, D.C. Bureau of Research. BUREAU NO BR-5-1038 PUB DATE 68 CONTRACT OEC-5-10-058 NOTE 235p.; Authorized Interim Version EDRS PRICE MF-$0.65 HC-S9.87 DESCRIPTORS Instructional Materials; *Multimedia Instruction; *Nuclear Physics; Physics; *Radiation; Science Activities; Secondary Grades; *Secondary School Science; *Teaching Glides; Teaching Procedures IDENTIFIERS Harvard Project Physics ABSTRACT Teaching procedures of Project Physics Unit 6are presented to help teachers make effectiveuse of learning materials. Unit contents are discussed in connection withteaching aid lists, multi-media schedules, schedule blocks, andresource charts. Brief summaries are made for transparencies, 16mm films, and reader articles. Included is information about the backgroundand development of each unit chapter, procedures in demonstrations, apparatus operations, notes on the student handbook, andan explanation of film loops. Additional articlesare concerned with objects dated by radiocarbon, radiation safety, propertiesof radiations, radioactive sources, radioactivity determinationby electroscopes, and radiation detecting devices.Scalers, counters, Geiger tubes, and cadmium selenide photocellsare analyzed; and a bibliography of references is given, Solutionsto the study guide are provided in detail, and answers to test itemsare suggested. The sixth unit of the text, with marginal commentson each section, is also compiled in the manual. The work of Harvard ProjectPhysics has . been financially supported by: the Carnegie Corporation ofNew York, the Ford Foundation, the National Science Foundation,the Alfred P. Sloan Foundation, the United States office of Education,and Harvard University.
    [Show full text]
  • Aligned Layers of Silver Nano-Fibers
    Materials 2012, 5, 239-247; doi:10.3390/ma5020239 OPEN ACCESS materials ISSN 1996-1944 www.mdpi.com/journal/materials Article Aligned Layers of Silver Nano-Fibers Andrii B. Golovin 1, Jeremy Stromer 2 and Liubov Kreminska 2,* 1 Department of Electrical Engineering, City College of the City University of New York, New York, NY 10031, USA; E-Mail: [email protected] 2 Department of Physics & Physical Science, University of Nebraska at Kearney, Kearney, NE 68847, USA; E-Mail: [email protected] * Author to whom correspondence should be addressed; E-Mail: [email protected]; Tel.: +1-308-865-8144; Fax: +1-308-865-8281. Received: 5 January 2012; in revised form: 23 January 2012 / Accepted: 28 January 2012 / Published: 1 February 2012 Abstract: We describe a new dichroic polarizers made by ordering silver nano-fibers to aligned layers. The aligned layers consist of nano-fibers and self-assembled molecular aggregates of lyotropic liquid crystals. Unidirectional alignment of the layers is achieved by means of mechanical shearing. Aligned layers of silver nano-fibers are partially transparent to a linearly polarized electromagnetic radiation. The unidirectional alignment and density of the silver nano-fibers determine degree of polarization of transmitted light. The aligned layers of silver nano-fibers might be used in optics, microwave applications, and organic electronics. Keywords: metal nano-fibers; lyotropic liquid crystals; aligned layers; dichroic polarizers; dichroic ratio; degree of polarization 1. Introduction Modern optical applications, e.g., flexible liquid crystal displays, require a polarizer with large optical aperture, minimized thickness, broad band transmission, and low cost. To resolve such contradictory requirements one may use so-called dichroic film polarizers.
    [Show full text]
  • SIS Bulletin Index Issues 1 to 80
    Scientific Instrument Society Bulletin of the Scientific Instrument Society Index No 1 to No 80 Scientific Instrument Society Bulletin of the Scientific Instrument Society Index No 1 to No 80 Contents Introduction Index of Topics 3 Index of Articles 37 Index of Book Reviews 51 The Scientific Instrument Society 61 Documents Associated with the Index 61 Introduction Development of the Index of the Bulletin of the Scientific Instrument Society The first 40 issues of the Bulletin were indexed successively, ten issues at a time. With the advent of No 50 it was decided to amalgamate the earlier work and create a single index for all 50 issues. The work involved was a vast undertaking requiring the use of optical character recognition and other computer techniques on the earlier work, and a good deal of careful proof reading. The final product was handsomely produced in A4 size uniform with the Bulletin, running to 64 index pages. Having reached 80 issues, a similar combining exercise has been done, but with fewer categories within the Index. However, whilst the main index of individual topics remains as comprehensive as previously it is presented in a smaller typeface and makes use of more columns. At the time of printing, consideration is being given to the use of this new Index as a facility on the Society's website and also in connection with CDROMs of the Bulletin. Notes for using the 3 sections of the Bulletin Index, Issue No 1 to Issue No 80 Index of Topics Topics are arranged alphabetically by subject. References are shown as 'Issue No : Page No' eg 2:15 or 45:7-11 Index of Articles Authors of articles are listed alphabetically with the titles of their articles following in issue order.
    [Show full text]