Principles of Electricity and Electromagnetism |
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Page 558
... antenna . If the approximation is valid , the problem is reduced to that of calculating the radiation fields due to the two antennas . The discussion can be conveniently divided into two parts , that dealing with those antennas in which ...
... antenna . If the approximation is valid , the problem is reduced to that of calculating the radiation fields due to the two antennas . The discussion can be conveniently divided into two parts , that dealing with those antennas in which ...
Page 563
... antenna . If each of the antennas of Figs . 16.16 or 16.17 were backed at a dis- tance 1/4 by an antenna lagging in phase by π / 2 , the effect would evidently be to multiply the radii of those figures by the radii of Fig . 16.18 ...
... antenna . If each of the antennas of Figs . 16.16 or 16.17 were backed at a dis- tance 1/4 by an antenna lagging in phase by π / 2 , the effect would evidently be to multiply the radii of those figures by the radii of Fig . 16.18 ...
Page 570
... antenna , an increase in capacity indicates an inductive and a decrease a capacitative reactance . The antenna lead is then discon- nected and a series circuit containing a known resistance and reactance of the proper sign connected ...
... antenna , an increase in capacity indicates an inductive and a decrease a capacitative reactance . The antenna lead is then discon- nected and a series circuit containing a known resistance and reactance of the proper sign connected ...
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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 grad grid hence impedance induction integral ions known Laplace's equation length linear load magnetic field magnetic moment magnitude maximum measured metal meter negative obtained ohms oscillations output parallel phase plate positive potential difference potential wave potentiometer produced proportional quantities R₁ radiation radius ratio reactance region represents resistance resonant rotation shown in Fig solenoid solution surface temperature terminals theorem torque tube unit V₁ vector velocity voltage volts wire written zero