▁re ppel ▁night ▁attacks ▁from ▁German ▁bom bers ▁by ▁pointing ▁search light s ▁at ▁them . ▁This ▁further more ▁represented ▁a ▁rare ▁techn ological ▁super i oty ▁for ▁the ▁French . ▁After ▁this ▁remarkable ▁start ▁in ▁the ▁fields ▁of ▁ac oust ics , ▁he ▁non eth eless ▁decided ▁to ▁abandon ▁this ▁field . ▁The ▁reason ▁being ▁that ▁his ▁professor ' s ▁own ▁instrument ▁didn ' t ▁get ▁chosen ▁by ▁the ▁French ▁military , ▁and ▁René ▁fe ared ▁he ▁would ▁have ▁no ▁academic ▁future ▁in ▁this ▁field . ▁He ▁then ▁turned ▁chron ometry . ▁ ▁He ▁initially ▁worked ▁at ▁the ▁observ ator ies ▁of ▁Nice ▁( 1 9 1 0 – 1 9 2 4 ) ▁and ▁Marse ille ▁( 1 9 2 4 – 1 9 3 0 ), ▁while ▁already ▁teaching ▁at ▁the ▁" É cole ▁d ' In g én ieurs ▁de ▁Marse ille ", ▁before ▁taking ▁a ▁chair ▁as ▁professor ▁at ▁the ▁University ▁of ▁Bes an çon ▁and ▁becoming ▁director ▁of ▁the ▁Bes an çon ▁observ atory ▁until ▁ 1 9 5 7 . ▁During ▁this ▁time ▁he ▁over se es ▁the ▁installation ▁of ▁special ▁clock , ▁in ▁a ▁spe cially ▁built ▁room ▁ 5 ▁meter ▁under ne ath ▁the ▁observ ator ies ' ▁library ▁to ▁maintain ▁constant ▁temperature , ▁allowing ▁the ▁observ atory ▁to ▁Jo in ▁the ▁establishment ▁of ▁a ▁global ▁time ▁network . ▁ ▁He ▁is ▁a ▁found ing ▁member ▁of ▁the ▁French ▁society ▁of ▁chron ometry , ▁and ▁its ▁first ▁chief ▁of ▁staff , ▁creating ▁in ▁