## Classical Electromagnetism, Volume 1CLASSICAL ELECTROMAGNETISM features a friendly, informal writing style. The text has received numerous accolades. |

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Page 336

We would prefer the cross product, because we want a vector that will tell us what

direction the energy is flowing. ... So we shall now investigate the quantity S =

E X B//i (14.1) which is called

We would prefer the cross product, because we want a vector that will tell us what

direction the energy is flowing. ... So we shall now investigate the quantity S =

E X B//i (14.1) which is called

**Poynting's vector**after an Englishman who ...Page 337

Figure 14.1

V X E/n - E • V X B/fl dE dt = -B-dB/fidt- E J + e V-S = (B2/2n + eE2/2) - EJ dt (A

vector identity) (Maxwell equations) (Rearranging) (14.2) (14.3) So V • S does ...

Figure 14.1

**Poynting's vector**. So let's take a look at V • S. V • S = V • (E x B/» = B •V X E/n - E • V X B/fl dE dt = -B-dB/fidt- E J + e V-S = (B2/2n + eE2/2) - EJ dt (A

vector identity) (Maxwell equations) (Rearranging) (14.2) (14.3) So V • S does ...

Page 1-11

See Lorentz transformation. momentum-energy four-vector, 455 of

electromagnetic fields, 466-476, 467, 471, 480 orthogonal, ... See

derivations in, ...

See Lorentz transformation. momentum-energy four-vector, 455 of

electromagnetic fields, 466-476, 467, 471, 480 orthogonal, ... See

**Poynting's****vector**. propagation, 360, 360 unit, 1-2, 2 Vector algebra, 1 -6 addition in, 2-3, 3derivations in, ...

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### Contents

Vector Analysis | 1 |

Electric Field EGausss Law | 33 |

Magnetic Field BAmperes Law | 66 |

Copyright | |

17 other sections not shown

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### Common terms and phrases

acceleration Ampere's law angular ANSWER antenna atom axis Biot-Savart Biot-Savart law C7 EXAMPLE calculate capacitance capacitor charge density charge Q circuit component conducting conductor constant coordinates Coulomb's law curl current density cylinder dA/dt dielectric differential direction distance divergence divergence theorem electric dipole electric field electromagnetic electrons electrostatic Faraday's law field lines Figure Find the field flux frequency Gauss's law inductance inductor infinite inside integral Laplace's equation line charge loop Lorentz force Lorentz transformation magnetic dipole magnetic field magnetic monopoles Maxwell's equations meter momentum moving negative parallel perpendicular plane plasma plates polarization positive potential Poynting's vector primed frame Problem proton radiation radius reference frame relative relativistic resistor right-hand rule rotation scalar Section solenoid sphere spherical stationary surface charge theorem tion unit V X A V X B V X E velocity voltage waveguide wire zero