- #1
AshsZ
- 17
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Hypothetical device:
Vacuum Tube
Two tungsten electrode plates at each end
The work function of tungsten is ~4.5V.
Lets attach a power supply to the two electrodes with a potential difference of 4.0V.
Question is, by biasing the two plates in such manner, is the thermionic discharge potential at the cathode reduced to 0.5V?
rephrase: If 0.5V of thermal-equivalent heat is applied to this already voltage-biased cathode, will the conduction electrons possesses ample kinetic energy to escape?
Vacuum Tube
Two tungsten electrode plates at each end
The work function of tungsten is ~4.5V.
Lets attach a power supply to the two electrodes with a potential difference of 4.0V.
Question is, by biasing the two plates in such manner, is the thermionic discharge potential at the cathode reduced to 0.5V?
rephrase: If 0.5V of thermal-equivalent heat is applied to this already voltage-biased cathode, will the conduction electrons possesses ample kinetic energy to escape?