july german danish physicist pioneer use radioactive biology medicine notably techniques dating later life scientific historian published biography born non religious jewish family frankfurt germany entered carried doctoral studies berlin writing thesis metal supervision time received elected office germany jews longer allowed hired academic positions went denmark found position working published number papers use radioactive substances biology nazis began rounding danish jews september fled sweden worked biologist stockholm war ended returned denmark work copenhagen spent academic year united_states learning recently discovered techniques dating introduced europe retired involved collected papers eventually publishing biography early life born frankfurt germany daughter adolf sales director metal company wife née daughter printer older brother called gifted musician learned play piano young age summers listen performances cousins summer house bavaria musicians including jewish family religion jewish community enrolled frankfurt religion listed jewish religious instruction compulsory attend classes local soon rebelled told parents wish attend classes came reject formal religion high school decided scientist final year devoted physics project photography girl class major physics year graduation april father sent england months learn english good manners entered listened lectures doctorate father managed accepted berlin wrote thesis metal supervision nazi period time received doctorate elected office germany gone exile jews longer allowed hired academic positions danish branch helped find position denmark asked refugee germany knew willing assistant replied know personally knew thesis rated highly engaged physicist known mother jewish opposed son marrying jewish girl broke engagement days wedding place action shocked eminent physicist invited visit second world war married friends visit institute including worked assistant publishing papers left denmark united_states assistant hungarian physical chemist recent discovery induced consequent creation short lived radioactive opened number new uses radioactive substances biology explored publishing number papers cancelled doctorate april germans occupied denmark nazis began rounding danish jews september thousands jews fled sweden rest war worked biologist stockholm later life war ended elected stay sweden decided drop biological research institute return concentrating physics accepted position copenhagen august like won nobel prize spent academic year united_states fellow learned university_of_chicago recently discovered technique dating developed new technique working rochester new_york returning denmark worked copenhagen develop dating equipment test dating man investigate effects agent consultant retired involved collected papers result work biography published year organised copenhagen town hall honoured berlin students dismissed died copenhagen july
Hilde Levi