## Principles of Electricity and Electromagnetism |

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Page 203

4 ) applies the current is said to be

higher potentials the saturation current which is determined by the cathode

temperature is drawn . Typical characteristics L ' Electrons 1 . 21 For i = 4K ( 2e /

m ) - 99v ...

4 ) applies the current is said to be

**space**- charge - limited . At considerablyhigher potentials the saturation current which is determined by the cathode

temperature is drawn . Typical characteristics L ' Electrons 1 . 21 For i = 4K ( 2e /

m ) - 99v ...

Page 258

Below about – 18 volts a positive - ion

probe , above this value an electron sheath begins to form , and is completed at

about - 12 volts . Above this value the electron -

Below about – 18 volts a positive - ion

**space**- charge sheath exists about theprobe , above this value an electron sheath begins to form , and is completed at

about - 12 volts . Above this value the electron -

**space**- charge equation applies .Page 532

Since these waves traverse free

originally felt necessary to introduce an all - pervading medium , the oscillation of

which was responsible for the propagation of an electromagnetic disturbance .

Since these waves traverse free

**space**which is utterly devoid of matter , it wasoriginally felt necessary to introduce an all - pervading medium , the oscillation of

which was responsible for the propagation of an electromagnetic disturbance .

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angle applied approximately assumed atom axis becomes calculated capacity carrying cell characteristic charge circuit closed coil component condition conducting conductor connected considered constant curve density depends determined dielectric difference direction discharge discussion distance effective electric electrons element energy equal equation evident expression factor field flow flux force frequency function galvanometer given grid hence impedance important increases indicated induction integral ions known length limited linear load losses magnetic magnetic field magnitude maximum means measured mechanical metal meter method negative normal obtained oscillations parallel path period phase placed plate positive potential present produced proportional quantities radius ratio reduced region relation represents resistance respect result rotation seen separation Show shown simple solution space surface temperature terminals transformer tube unit vector volts volume wave wire written zero