Results 1 - 10 of 1474
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[en] An analysis of the overshoot phenomenon which is produced by quartz oscillators during the warm-up time is proposed. A particular application to oscillators equipped with ''electrodless'' resonators is described
[en] For controlling pulsed columns used in nuclear fuel reprocessing a signal is obtained from a parameter of the medium the signal is processed in two parallel circuits made of electric filters to get the frequency. Other applications include chemical or petroleum industry
[fr]A partir d'un signal correle a cette frequence F a l'interieur meme du milieu, on effectue un traitement du signal dans deux voies paralleles: on calcule la diference des signaux de sortie de ces deux voies et on l'annule en faisant varier la moyenne des frequences sur lesquelles sont centrees les courbes de reponse des filtres passe-bandes pour obtenir alors la valeur de F. Application a l'industrie petroliere ou au retraitement de combustibles irradies
[en] The frequency of one axial mode of a three-mode He/Ne laser can be tuned independently from the other modes if a third mirror is added to the usual two laser mirrors. Provided the adjustment is correct, the frequency shift is proportional to a change of the optical path length between the third mirror and the neighboring laser mirror. By observing the beat frequency of the laser, measurements of optical path variations down to 10-5 A are possible. (U.S.)
[en] The bubble departure diameter and bubble release frequency were obtained through the analysis of TAMU subcooled flow boiling experimental data. The numerous images of bubbles at departure were analyzed for each experimental condition to achieve the reliable statistics of the measured bubble parameters. The results are provided in this report with simple discussion.
[en] Neutrino oscillation measurement have a long history that covers many years of experiments without positive results, as well as perseverance in experimental work that has paid off with clear evidence for oscillation in a number of cases and possible small effects in other cases. it seems clear that the dominant mechanism for neutrino flavour change in the oscillation of 3 massive active neutrino types. However, a number of possible sub-dominant processes, including the participation of sterile neutrinos, are the subject of ongoing measurements.