## Principles of Electricity and Electromagnetism |

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Page 202

electrons start from rest at the

surface of this electrode). Assuming the electrodes to be normal to the x axis,

Poisson's equation (Sec. 1.7) reduces to g = (7.D dx1 ,<0 qv can be expressed in

terms of ...

electrons start from rest at the

**cathode**(the potential minimum is then at thesurface of this electrode). Assuming the electrodes to be normal to the x axis,

Poisson's equation (Sec. 1.7) reduces to g = (7.D dx1 ,<0 qv can be expressed in

terms of ...

Page 261

If the potential is applied to the tube in the reverse sense, no discharge ensues

until the potential is sufficiently high to induce electron emission from the plate

and establish a cold-

...

If the potential is applied to the tube in the reverse sense, no discharge ensues

until the potential is sufficiently high to induce electron emission from the plate

and establish a cold-

**cathode**discharge. This is known as the flashback potential...

Page 266

they entirely disappear for a 180° phase difference between the grid and anode

waves.1 8.5. Cold-

from those that have been discussed only in the mechanism of electron emission

by ...

they entirely disappear for a 180° phase difference between the grid and anode

waves.1 8.5. Cold-

**cathode**Discharges. — The cold-**cathode**discharge differsfrom those that have been discussed only in the mechanism of electron emission

by ...

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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