1/8/07184 Lecture 11 PHY 184 Physics for Scientists & Engineers 2 Spring Semester 2007 Lecture 1

1/8/07184 Lecture 12 Meet Your Professor (1)  Section 1  Prof. Reinhart Schienhorst  Section 2  Prof. Daniel Stump

1/8/07184 Lecture 13 Meet Your Professor (2)  Daniel Stump  Ph. D (M. I. T.)  Teaching at MSU since 1980  Theoretical High-Energy Physics  Office hours Mon & Thu, 1:00 -2:30 pm Learning Center (Room 1248)  Best way to contact me – after class

1/8/07184 Lecture 14 Comparing Data and Theory

1/8/07184 Lecture 15 Meet Your Professor (2)  Daniel Stump  Ph. D (M. I. T.)  Teaching at MSU since 1980  Theoretical High-Energy Physics  Office hours Mon & Thu, 1:00 -2:30 pm Learning Center (Room 1248)  Best way to contact me – after class

1/8/07184 Lecture 16 Textbook  Bauer and Westfall  “Physics for Scientists and Engineers 2”, McGraw-Hill (2005). Available at the MSU Bookstore

1/8/07184 Lecture 17 PHY 184 on the Web  Web site:  Homework web site  Strosacker 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.

1/8/07184 Lecture 18 LON-CAPA Login Enter your MSU mail id Enter your password Enter msu Click or hit return

1/8/07184 Lecture 19 Grades  We grade on a fixed scale - no curve What Counts% Midterm 120% Midterm 220% Final Exam30% Homework30% Total 100% Up to 5% extra credit: In- class quizzes using HITT clickers

1/8/07184 Lecture 110 To 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)

1/8/07184 Lecture 111 Clicker Quizzes Enroll your clicker in LON-CAPA by giving your clicker ID!  HITT clickers – purchase at the bookstore

1/8/07184 Lecture 112 Clicker Sign-up  Registration in LON-CAPA: Course document “Clicker”

1/8/07184 Lecture 113 Schedule for PHY 184  Lectures M, Tu, W, Th 9: :00  Two Midterm Exams Thursday, February 8 Thursday, March 22  Final Exam Time – Thursday May 3 Location - TBA  Homework due each Tuesday morning at 8:00 am If you care about your grade, come to class ! Work on homework every day!

1/8/07184 Lecture 114 Syllabus and Exams

1/8/07184 Lecture 115 Electromagnetism

1/8/07184 Lecture 116 Electricity and Magnetism  Electricity 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 19 th century.

1/8/07184 Lecture 117 Fundamental Forces of Nature  The force of gravity was described by Isaac Newton Late 17th century  In the 20th century, two more forces were discovered The weak force and the strong force – inside the atomic nucleus  The electromagnetic force and the weak force have a unified theory The electroweak force 1979 Nobel prize in physics for Weinberg, Salam, and Glashow  Currently physicists are working to unify the electroweak force and the strong force.  Gravity remains a puzzle although it was identified first.

1/8/07184 Lecture 118 The Four Forces  We 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.

1/8/07184 Lecture 119 Gravitational and Electric Forces  For gravity we defined a gravitational force…  …and a gravitational potential  We 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.

1/8/07184 Lecture 120 Elementary Particles  Exchange particles  Leptons  Quarks

1/8/07184 Lecture 121 Fermi National Accelerator Laboratory Link