TERMIUM Plus^®

Record 1,  Textual support,  English

Record number: 1, Textual support number: 1 DEF

Positron decay in matter by annihilation with an electron.  3, record 1, English, - positron%20annihilation

Record number: 1, Textual support number: 1 CONT

Discovery of cataclysmic variables... Verifying that an object is a cataclysmic variable is also fairly straightforward : they are usually quite blue objects, they exhibit rapid and strong variability, and they tend to emit in the ultraviolet and X-ray ranges; they are expected also to emit gamma rays, from annihilation of positrons from proton-rich nuclei produced in the fusion explosion...  3, record 1, English, - positron%20annihilation

Record number: 1, Textual support number: 1 OBS

Usually an "atom" of positronium (e+e-) forms which annihilates to produce two 511-keV photons. Occasionally, the positron will annihilate in flight to produce one or more photons sharing the total rest mass and kinetic energy of the positron and electron.  3, record 1, English, - positron%20annihilation

Record 1,  Textual support,  French

Record number: 1, Textual support number: 1 CONT

Annihilation des positons. Cette méthode permet de mesurer le temps de vie des positons piégés par tout défaut provoquant une diminution de la densité électronique locale [...] Elle est donc non seulement sensible à la présence de lacunes et petites cavités, mais également à celle de certains précipités. Toutefois, l'interprétation des résultats obtenus par cette technique s'avère parfois délicate.  1, record 1, French, - annihilation%20des%20positons

Record 1,  Textual support,  Spanish

Record 2,  Textual support,  English

Record number: 2, Textual support number: 1 CONT

The phase changing element is suitably a variable capacitance and may be incorporated into channel µ. One form of phase changing network takes the form of an RC circuit having an adjustable capacitor. The reaction channel ß then contains the temperature stabilized resonator circuit. In practice the resonator is preferably placed in the network y [gamma].  1, record 2, English, - phase%20changing%20network

Record number: 2, Textual support number: 2 CONT

The peak/r.m.s. ratio of the signal should not exceed 3.5. This requirement may be achieved, in the case of a particular generator, by means of an associated phase-changing network.  2, record 2, English, - phase%20changing%20network

Record 2,  Textual support,  French

Record number: 2, Textual support number: 1 CONT

L'invention se base sur l'idée de faire fonctionner le réseau de déphasage de type RC dans un mode admittance plutôt que dans un mode impédance, le mode admittance fournissant une sortie de signal en puissance plutôt qu'en tension. Cette idée a été appliquée dans d'autres types d'amplificateurs déphaseurs.  1, record 2, French, - r%C3%A9seau%20de%20d%C3%A9phasage

Record 2,  Textual support,  Spanish