thermionic मीनिंग इन हिंदी

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ENIAC was, like the thermionic valves ( vacuum tubes ).
Bell Labs did not develop a satisfactory thermionic diode for microwave reception.
Thermionic currents can be increased by decreasing the work function.
A thermionic diode is a plate ( anode ).
Semiconductor devices have replaced thermionic devices ( vacuum tubes ) in most applications.
The elecrons can be provided by thermionic emission and / or secondary emission.
However, Mahan's paper concluded that thermionic refrigeration couldn't work.
Mahan's original paper envisaged two major obstacles to room-temperature thermionics.
The thermionic valve was invented in 1904 by the English physicist John Ambrose Fleming.
The war increased demand for such instruments and the War Office needed experimental thermionic valves.

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