## Introduction to Electrodynamics, Volume 2"WHAT IS ELECTRODYNAMICS, AND HOW DOES IT FIT INTO THE GENERAL SCHEME OF PHYSICS? Four Realms of Mechanics In the diagram below, I have sketched out the four great realms of mechanics: Classical Mechanics Quantum Mechanics (Newton) (Bohr, Heisenberg, Schrödinger, et al.) Special Relativity Quantum Field Theory (Einstein) (Dirac, Pauli, Feynman, Schwinger, et al.) Newtonian mechanics is adequate for most purposes in "everyday life," but for objects moving at high speeds (near the speed of light) it is incorrect, and must be replaced by special relativity (introduced by Einstein in 1905); for objects that are extremely small (near the size of atoms) it fails for different reasons, and is superseded by quantum mechanics (developed by Bohr, Schrödinger, Heisenberg, and many others, in the 1920's, mostly). For objects that are both very fast and very small (as is common in modern particle physics), a mechanics that combines relativity and quantum principles is in order; this relativistic quantum mechanics is known as quantum field theory--it was worked out in the thirties and forties, but even today it cannot claim to be a completely satisfactory system. In this book, save for the last chapter, we shall work exclusively in the domain of classical mechanics, although electrodynamics extends with unique simplicity to the other three realms. (In fact, the theory is in most respects automatically consistent with special relativity, for which it was, historically, the main stimulus.)"-- |

### What people are saying - Write a review

#### LibraryThing Review

User Review - astropi - LibraryThingThis is one of my all-time favorite science books! Does a BRILLIANT job of presenting the physics, and reviews the basic math (divergence, Stoke's Theorem, etc). This book is a MUST for anyone in ... Read full review

User Review - Flag as inappropriate

page 1to 603

### Contents

Vector Analysis | 1 |

El Electrostatics | 59 |

Potentials | 113 |

Electric Fields in Matter | 167 |

Magnetostatics | 210 |

Magnetic Fields in Matter | 266 |

Electrodynamics | 296 |

Conservation Laws | 356 |

Electromagnetic Waves | 382 |

Potentials and Fields | 436 |

Radiation | 466 |

Electrodynamics and Relativity | 502 |

A Vector Calculus in Curvilinear Coordinates | 575 |

B The Helmholtz Theorem | 582 |

### Other editions - View all

### Common terms and phrases

Ampère's law angular answer assume atom axis Biot–Savart law bound charge boundary conditions calculate capacitor charge density charge distribution charge q components conductor configuration constant coordinates Coulomb Coulomb's law curl cylinder derivative direction displacement distance divergence divergence theorem electric and magnetic electric field electrodynamics electromagnetic electron electrostatic energy Example field inside FIGURE Find the electric Find the potential flux formula free charge frequency function Gauss's law Gauss’s law gradient infinite infinity Laplace's equation line integral linear dielectric Lorentz force law magnetic dipole magnetic field magnetic force magnetostatics Maxwell’s equations momentum motion moving origin particle perpendicular Phys point charge polarization Poynting vector Prob Problem radiation region relativistic scalar Sect Show shown in Fig ſº solenoid Solution speed spherical steady current Suppose surface charge theorem total charge unit vector potential velocity volume wave wire zero