. Bell telephone magazine . sf,*»T«^t.W«l| Comment une fusée vole {à gauche): Photos prises au rythme de 4^000 par seconde. A droite: Appareil photo AFASTAX dans le laboratoire^ sur le point de photographier l'équipement de commutation téléphonique à cadran qui se déplace plus vite que l'œil humain peut voir 1946 Bell Laboratories rôle dans la victoire 125. Un bolomètre à thermistance^ utile pour mesurer les changements de température infimes afin D'UTILISER efficacement des évolutions hautement techniques dans le combat exige qu'ils soient manipulés et entretenus par des hommes tués. Peu de temps après PearlHarbour, les Services ont demandé aux laboratoires de mettre en place une formation scolaire en avant-guerre en W

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. Bell telephone magazine . sf, *»T«^t.w«l| How a rocket flies {left): pictures taken at the rate of 4^000 per second. Right: AFastax camera in the laboratory^ about to photograph dial telephone switching equipment which moves faster than the human eye can see 1946 Bell Laboratories Role in Victory 125. A thermistor bolometer^ useful in measur-ing minute changes in temperature To USE highly technical develop-ments effectively in combat requiredthat they be handled and serviced byskilled men. Shortly after PearlHarbor, the Services directed theLaboratories to set up a school forwar training In which key men wouldbe prepared to train others in mili-tary schools. A few maintenancemen were also to be trained, to carefor the first equipments until the mili-tary schools trainees were available.The first class started in April 1942, and from then until the end of the wara stream of trainees went through theschool. They ranged from radiorepairmen fresh from their workbenches to graduate engineering offi-cers who had had months of trainingat Massachusetts Institute of Tech-nology. There was a steady proces-sion of apparatus, too. Nearly everyradar developed by the Laboratoriesappeared In the School—frequentlySerial No. i, just off the productionline. For each equipment there wasa special tex

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