Chapter 13: AMPÈRE'S LAW

The origin of magnetism

  • Model for magnetism
  • Force between a moving charge and a current
  • Reverse direction
  • 2-D Biot-Savart Law
  • 3-D Biot-Savart Law
  • Magnetic moment of a Dirac electron
  • Spin-orbit fine structure

    • Mechanics and electrodynamics of moving bodies

  • Maxwell's equations
  • Woldemar Voigt's 1887 discovery
  • Voigt bio
  • Invariance of the speed of light
  • Apparent length contraction applet
  • Apparent time dilation applet
  • Why does length contract and time dilate?
  • Do we get small?

    Is it about rocket ships?

  • Einstein, Ann. Phys. Chim. 17, 890-921 (1905).
  • English translation
  • Model for magnetism
  • Force between a moving charge and a current
  • Reverse direction

    • Nature is symmetric in space and time

  • The Lumière brothers
  • The dawn of time reversal
  • Slow-motion photography
  • Stop action
  • Time-lapse photography
  • Reverse-action photography
  • Time reversal

    • Relativistic corrections to the kinetic energy (Griffiths pp. 266-270)

  • Mass-energy: just a units conversion
  • Rotations among four-vectors
  • Space-time transformations of momentum and energy
  • Special Relativity Corrections
  • With quantization