thermionic


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thermionic

[‚thər·mē′än·ik]
(electronics)
Pertaining to the emission of electrons as a result of heat.
References in periodicals archive ?
Caption: Figure 2: Distribution of the emission's current densities in the penetration channel during excitation of a non-self-sustaining discharge: [j.sub.t0] is the density of the thermionic current; [j.sub.t] is the current density, accounting for the Schottky effect.
-- Carex Health Brands has acquired Thermionic Corp.'s ThermiPaq hot and cold therapy line.
On the other hand, as the energy source in the TWT is the electron beam that emits from a thermionic cathode, the power is limited by maximum current density.
As for algorithms S I once had to reproduce a diagram of a thermionic valve.
Table 1 Most important products exchanged by Costa Rica and China 2011 IMPORTS EXPORTS Telecommunication equipment; Thermionic, microcircuits, parts and accessories transistors, valves Automatic data processing Polymerization and machines and units thereof copolymerization products Footwear Electrical apparatus for making and breaking electrical circuits Baby carriages, toys, games and Non-ferrous base metal waste and sporting goods scrapes Furniture and parts thereof Fruit, preserved, and fruits preparations Source: www.eclac.org/comercio/ecdata2/index.html.
This author has analyzed the chronological timelines of numerous scientific discoveries, including these: Euclidian Geometry, Newton's derivation of fluxions (calculus), Newton's development of a theory of universal gravitation, unified geometry, thermionic emission, and Pauli's exclusion principle in physics (Harmon, 1973).
The Lane-Emden type equations describe a variety of phenomena in theoretical physics and astrophysics, including the aspects of stellar structure, the thermal history of a spherical cloud of gas, isothermal gas spheres, and thermionic currents.
It was shown [37] that thermally assisted tunnelling, and not thermionic emission, dominates carrier injection into 1D semiconductors.
Having had Sir John Ambrose Fleming, the inventor of the thermionic valve, as the first chair of electrical technology in the late 1800s, UCL built on this pioneering work, often with Marconi, in the following years.
The EISA judges awarded the HT--E6750W Best in Class not just because it is "bridging the generations between thermionic valves and modern Class D amplification," but also because the combination of its features and functionalities ensures endless home entertainment enjoyment.