thermion

How To Use thermion In A Sentence

• Alternately, electron emission may be by thermionic means.
• Since 1914 he worked at thermionics, photoelectric effects, magnetism, the emission of electrons by chemical action, the theory of electrons, the quantum theory, the spectrum of molecular hydrogen, soft X-rays, the fine structure of Ha and Da. Owen Willans Richardson - Biography
• Another theory is that, since energy is required to extract electrons from the heated material, there should be cooling when thermions are emitted.
• Currently conventional thermionic cathode gun cannot satisfy people's requirement for high lightness and long gun.
• During the same period researches were carried on in thermal radiation with the collaboration of Mr. J.R. Weeks, and in thermionics with Dr. H.A. Pidgeon and Dr. Germer. Clinton Davisson - Biography
• Currently conventional thermionic cathode gun cannot satisfy people's requirement for high lightness and long gun.
• Photocells capable of seeing things in a physical sense, advanced photography which can record what is seen or even what is not, thermionic tubes capable of controlling potent forces under the guidance of less power than a mosquito uses to vibrate his wings, cathode ray tubes rendering visible an occurrence so brief that by comparison a microsecond is a long time, relay combinations which will carry out involved sequences of movements more reliably than any human operator and thousands of times as fast — there are plenty of mechanical aids with which to effect a transformation in scientific records. As We May Think
• If the ionization electrode is located at an appropriate position in the vicinity of the evaporation source and a positive voltage with respect to that of the evaporation source is applied to the electrode, thermions and secondary electrons from the evaporation source migrate toward the ionization electrode.
• When the main power supply of the X-ray tube is on, the cathode emits thermions as it is heated by a heater.
• The most important fact was that Mr. Richardson's opinion about the thermion-phenomenon with fixed laws was totally confirmed. Nobel Prize in Physics 1928 - Presentation Speech