Principles of Electricity and Electromagnetism |
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Page 69
... volume integral may be written U = D. E dv ( 2.33 ) by the aid of Eq . ( 1.13 ) . Thus the energy per unit volume in terms of the field and displacement is given by D. E. If the medium is linear and isotropic , Eq . ( 2.33 ) reduces to ...
... volume integral may be written U = D. E dv ( 2.33 ) by the aid of Eq . ( 1.13 ) . Thus the energy per unit volume in terms of the field and displacement is given by D. E. If the medium is linear and isotropic , Eq . ( 2.33 ) reduces to ...
Page 190
... volume occupied by a unit charge of electrons in the vapor state . Equation ( 6.4 ) then becomes -E = pV - TV dp dT ( 6.13 ) If n is the number of electrons per unit volume above the surface and e is the charge per electron V , the volume ...
... volume occupied by a unit charge of electrons in the vapor state . Equation ( 6.4 ) then becomes -E = pV - TV dp dT ( 6.13 ) If n is the number of electrons per unit volume above the surface and e is the charge per electron V , the volume ...
Page 595
... volume becomes ( avz Эх avy + მყ av2 + dx dy dz dz = div v dv where du is written for the volume element dx dy dz . Thus the divergence of v times du represents the net outward flow through the surface bounding the volume dv . A finite ...
... volume becomes ( avz Эх avy + მყ av2 + dx dy dz dz = div v dv where du is written for the volume element dx dy dz . Thus the divergence of v times du represents the net outward flow through the surface bounding the volume dv . A finite ...
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alternating current alternating-current ampere amplifier amplitude angle angular anode antenna applied approximately armature assumed atom axis calculated capacity cathode cell characteristic charge circuit coefficient coil component condenser conducting conductor considered constant curl current flowing curve deflection density determined dielectric dielectric constant direct-current direction dynamic resistance effective electric field electromagnetic electromotive force electrons electrostatic element energy equal equation flux force frequency function galvanometer grad harmonic hence impedance induction integral ions known length linear load magnetic field magnetic moment magnitude maximum measured meter negative obtained ohms oscillations output parallel phase plane plate current positive potential difference potentiometer quantities R₁ radiation radius ratio reactance region represents resistance resonant rotation scalar shown in Fig solution surface temperature terminals theorem torque transconductance triode tube unit vacuum tube vector velocity voltage volts wave wire written zero