PHY 184 Physics for Scientists & Engineers 2Meet Your Professor (1)Meet Your Professor (2)Slide 4Slide 5TextbookPHY 184 on the WebLON-CAPA LoginGradesSlide 10Clicker QuizzesClicker Sign-upSchedule for PHY 184Syllabus and ExamsSlide 15Electricity and MagnetismFundamental Forces of NatureThe Four ForcesGravitational and Electric ForcesElementary ParticlesFermi National Accelerator Laboratory1/8/07 184 Lecture 1 1PHY 184Physics for Scientists & Engineers 2PHY 184Physics for Scientists & Engineers 2Spring Semester 2007Lecture 11/8/07 184 Lecture 1 2Meet Your Professor (1)Meet Your Professor (1)Section 1Prof. Reinhart SchienhorstSection 2Prof. Daniel Stump1/8/07 184 Lecture 1 3Meet Your Professor (2)Meet Your Professor (2)Daniel StumpPh. D. 1976 (M. I. T.)Teaching at MSU since 1980Theoretical High-Energy PhysicsOffice hoursMon & Thu, 1:00 -2:30 pmLearning Center (Room 1248)Best way to contact me – after class1/8/07 184 Lecture 1 4Comparing Data and Theory1/8/07 184 Lecture 1 5Meet Your Professor (2)Meet Your Professor (2)Daniel StumpPh. D. 1976 (M. I. T.)Teaching at MSU since 1980Theoretical High-Energy PhysicsOffice hoursMon & Thu, 1:00 -2:30 pmLearning Center (Room 1248)Best way to contact me – after class1/8/07 184 Lecture 1 6TextbookTextbookBauer and Westfall“Physics for Scientists and Engineers 2”, McGraw-Hill (2005).•Available at the MSU Bookstore1/8/07 184 Lecture 1 7PHY 184 on the WebPHY 184 on the WebWeb site:•http://www.pa.msu.edu/courses/phy184Homework web site•http://msu.loncapa.orgStrosacker Learning Center in Room 1248 BPS (this building) will be our help room for LON-CAPA homework. Coverage will be numerous and varied hours each week.1/8/07 184 Lecture 1 8LON-CAPA LoginLON-CAPA LoginEnter your MSU mail idEnter your MSU mail idEnter your passwordEnter your passwordEnter msuEnter msuClick or hit returnClick or hit return1/8/07 184 Lecture 1 9GradesGradesWe grade on a fixed scale - no curveWhat Counts %Midterm 1 20%Midterm 2 20%Final Exam 30%Homework 30%Total100%What Grade92<x<1004.084<x<923.576<x<843.068<x<762.560<x<682.052<x<60 1.544<x<52 1.00<x<44 0.0Up to 5% extra credit: In-class quizzes using HITT clickers1/8/07 184 Lecture 1 10To get a good grade in PHY 184, you’ll need to do 4 things:/1/ Come to class, pay attention, take notes. (4 hours/wk)/2/ Do the reading. (2 hours/wk)/3/ Do the LON-CAPA homework. (8 hours/wk at least )/4/ Study for the exams. (10 hours the week before the exam)1/8/07 184 Lecture 1 11Clicker QuizzesClicker QuizzesEnroll your clicker in LON-CAPA by giving your clicker ID! HITT clickers – purchase at the bookstore1/8/07 184 Lecture 1 12Clicker Sign-upClicker Sign-upRegistration in LON-CAPA: Course document “Clicker”1/8/07 184 Lecture 1 13Schedule for PHY 184Schedule for PHY 184Lectures•M, Tu, W, Th•9:10 - 10:00 Two Midterm Exams•Thursday, February 8•Thursday, March 22Final Exam •Time – Thursday May 3•Location - TBAHomework due each Tuesday morning at 8:00 amIf you care about your grade, come to class !Work on homework every day!1/8/07 184 Lecture 1 14Syllabus and ExamsSyllabus and Exams1/8/07 184 Lecture 1 15Electromagnetism1/8/07 184 Lecture 1 16Electricity and MagnetismElectricity and MagnetismElectricity and MagnetismElectricity and MagnetismElectricity and magnetism have been known for thousands of years.•The philosophers of ancient Greece knew that a piece of amber rubbed with fur would attract small, light objects•The word for electron and electricity derive from the Greek word for amber, .•Naturally occurring magnetic materials called lodestones were used as early as 300 BC to construct compasses.The relationship between electricity and magnetism was not known until the middle of the 19th century.1/8/07 184 Lecture 1 17Fundamental Forces of NatureFundamental Forces of NatureFundamental Forces of NatureFundamental Forces of NatureThe force of gravity was described by Isaac Newton•Late 17th centuryIn the 20th century, two more forces were discovered•The weak force and the strong force – inside the atomic nucleusThe electromagnetic force and the weak force have a unified theory•The electroweak force•1979 Nobel prize in physics for Weinberg, Salam, and GlashowCurrently physicists are working to unify the electroweak force and the strong force.Gravity remains a puzzle although it was identified first.1/8/07 184 Lecture 1 18The Four ForcesThe Four ForcesThe Four ForcesThe Four ForcesWe think that the four fundamental forces work by exchanging elementary particles•Gravity - graviton (has not been observed)•Electromagnetic – photon (the elementary component of light)•Weak - W and Z bosons (first observed 1983, but unstable)•Strong – gluons (first observed 1978, but confined)Thus forces can act across distance (objects not touching)•The Sun attracts the Earth from 93 million miles away•A magnet attracts iron.The forces act through the fields of the exchanged particles.1/8/07 184 Lecture 1 19Gravitational and Electric ForcesGravitational and Electric ForcesGravitational and Electric ForcesGravitational and Electric ForcesFor gravity we defined a gravitational force……and a gravitational potentialWe will do the same for the electric force and the electric potential.We will develop the theory of the electric field to describe the electric force.221rMGMF rMGMU211/8/07 184 Lecture 1 20Elementary ParticlesElementary ParticlesElementary ParticlesElementary ParticlesExchange particlesLeptonsQuarks1/8/07 184 Lecture 1 21Fermi National Accelerator Fermi National Accelerator LaboratoryLaboratoryFermi National Accelerator Fermi National Accelerator
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