## Principles of Electricity and Electromagnetism |

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Page 64

If there is no volume distribution of placed charge, i.e., if qv = 0, it is evident that

the differential equation for the field in a

is the same as that in free. 64 ELECTROSTATIC ENERGY AND DIELECTRICS ...

If there is no volume distribution of placed charge, i.e., if qv = 0, it is evident that

the differential equation for the field in a

**linear**homo- geneous isotropic dielectricis the same as that in free. 64 ELECTROSTATIC ENERGY AND DIELECTRICS ...

Page 205

1 (dHc .

are the variations (generally small) of the independent variables ec and about the

points of expansion and Ic and lb are the so-called quiescent values of t, and ib, ...

1 (dHc .

**linear**approx. ib = h + ( dib\ a. ( dib\ m a**linear**approx. Here e„ and ePare the variations (generally small) of the independent variables ec and about the

points of expansion and Ic and lb are the so-called quiescent values of t, and ib, ...

Page 502

However, a certain insight is gained into its operation by considering a partially

first approximation so that at least part of the positive excursion of the grid results

...

However, a certain insight is gained into its operation by considering a partially

**linear**analysis. i Assume that the dynamic characteristic of the tube is**linear**to afirst approximation so that at least part of the positive excursion of the grid results

...

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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 discharge effective electric field electromagnetic electromotive force electrons electrostatic element energy equal equation flux force frequency function galvanometer given grid hence impedance induction integral ions known Laplace's equation length linear load magnetic field magnetic induction magnitude maximum measured metal meter negative normal obtained ohms oscillations output parallel phase plane plate polarization positive potential difference potential wave potentiometer produced proportional quantities radiation radius ratio reactance region represents resistance resonant rotation scalar Show shown in Fig solenoid solution surface temperature terminals theorem torque tube unit vector velocity voltage volts wire written zero