## Principles of Electricity and Electromagnetism |

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Page 235

sider that the sine

fluorescent screen) by a beam emerging from the cylindrical axis and rotating

with an angular velocity ģi. If the ends of the sine

time for n2 ...

sider that the sine

**wave**is traced out on the cylindrical surface (as on afluorescent screen) by a beam emerging from the cylindrical axis and rotating

with an angular velocity ģi. If the ends of the sine

**wave**join after n2 rotations, thetime for n2 ...

Page 548

The most favorable case for observation is the one involving the largest value of

6 for which the

Fig. 16.7 and both leaves and approaches the earth's surface tangentially. Taking

...

The most favorable case for observation is the one involving the largest value of

6 for which the

**wave**is reflected back to the earth. This path is indicated by 3 ofFig. 16.7 and both leaves and approaches the earth's surface tangentially. Taking

...

Page 550

is very close to the

ionosphere, as shown in Fig. 16.8. The numerical agreement with the observed

absorption maximum is more or less fortuitous as the effective value of B varies

with ...

is very close to the

**wave**length for which maximum absorption occurs in theionosphere, as shown in Fig. 16.8. The numerical agreement with the observed

absorption maximum is more or less fortuitous as the effective value of B varies

with ...

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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 hysteresis 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 Show shown in Fig solenoid solution surface temperature terminals theorem torque tube unit vector velocity voltage volts wire written zero