PHY 184 Physics for Scientists

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PHY 184Physics for Scientists Engineers 2

• Spring Semester 2007
• Lecture 1

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Meet Your Professor (1)

• Section 1
• Prof. Reinhart Schienhorst
• Section 2
• Prof. Daniel Stump

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Meet Your Professor (2)

• Daniel Stump
• Ph. D. 1976 (M. I. T.)
• Teaching at MSU since 1980
• Theoretical High-Energy Physics
• Office hours
• Mon Thu, 100 -230 pm
• Learning Center (Room 1248)
• Best way to contact me after class

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Comparing Data and Theory
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Meet Your Professor (2)

• Daniel Stump
• Ph. D. 1976 (M. I. T.)
• Teaching at MSU since 1980
• Theoretical High-Energy Physics
• Office hours
• Mon Thu, 100 -230 pm
• Learning Center (Room 1248)
• Best way to contact me after class

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Textbook

• Bauer and Westfall
• Physics for Scientists and Engineers 2,
  McGraw-Hill (2005).
• Available at the MSU Bookstore

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PHY 184 on the Web

• Web site
• http//www.pa.msu.edu/courses/phy184
• Homework web site
• http//msu.loncapa.org
• 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.

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LON-CAPA Login
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Grades

• We grade on a fixed scale - no curve

Up to 5 extra credit In-class quizzes using
HITT clickers
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To get a good grade in PHY 184, youll 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)
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Clicker Quizzes

• HITT clickers purchase at the bookstore

Enroll your clicker in LON-CAPA by giving your
clicker ID!
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Clicker Sign-up

• Registration in LON-CAPA Course document
  Clicker

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Schedule for PHY 184

• Lectures
• M, Tu, W, Th
• 910 - 1000
• Two Midterm Exams
• Thursday, February 8
• Thursday, March 22
• Final Exam
• Time Thursday May 3
• Location - TBA
• Homework due each Tuesday morning at 800 am

If you care about your grade, come to class !
Work on homework every day!
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Syllabus and Exams
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Electromagnetism
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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, ??????o?.
• 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.

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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.

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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.
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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.

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Elementary Particles

• Exchange particles
• Leptons
• Quarks

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Fermi National Accelerator Laboratory
Link