## Principles of Electricity and Electromagnetism |

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Page 562

14) for a single half wave

Radiation pattern of two half-wave

space. width of the pattern is approximately twice the ratio of the wave length to

the ...

14) for a single half wave

**antenna**sin (t cos <p) sin (t/2 cos 1>) Fio. 16.16. —Radiation pattern of two half-wave

**antennas**in phase and one half wave apart inspace. width of the pattern is approximately twice the ratio of the wave length to

the ...

Page 570

The

and the latter element adjusted for a maximum meter reading and the value of

this maximum noted. The nature of this adjustment determines the sign of the

reactive ...

The

**antenna**lead is then connected to the ungrounded side of the condenserand the latter element adjusted for a maximum meter reading and the value of

this maximum noted. The nature of this adjustment determines the sign of the

reactive ...

Page 575

The effective height of an

it to the field strength of the electromagnetic wave. What is the effective height of (

a) a vertical wire of length l erected on the surface of the earth, (6) a loop of ...

The effective height of an

**antenna**is defined as the ratio of the emf . generated init to the field strength of the electromagnetic wave. What is the effective height of (

a) a vertical wire of length l erected on the surface of the earth, (6) a loop of ...

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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