▁bi oph ys ics ▁in ▁ 1 9 4 7 , ▁his ▁doctor al ▁ment or ▁being ▁the ▁well - known ▁bi oph ys ic ist ▁and ▁expl orer ▁of ▁the ▁quant al ▁nature ▁of ▁vision , ▁Professor ▁Sel ig ▁He cht . ▁During ▁this ▁time ▁period ▁he ▁was ▁also ▁a ▁Columbia ▁University ▁teaching ▁fellow ▁and ▁he ▁worked ▁as ▁an ▁American ▁Philosoph ical ▁Society ▁doctor al ▁fellow ▁on ▁lim b ▁reg ener ation ▁with ▁Professor ▁Oscar ▁E . ▁Sch otte , ▁of ▁Am her st ▁College , ▁Massachusetts , ▁and ▁on ▁neur om yal ▁relax ation ▁laten cy ▁with ▁Professor ▁Alexander ▁Sand ow ▁of ▁New ▁York ▁University . ▁ ▁Professional ▁career ▁Upon ▁his ▁gradu ation , ▁he ▁was ▁success ively ▁( 1 9 4 6 – 1 9 5 3 ) ▁assistant ▁and ▁associate ▁professor ▁at ▁Ge or get own ▁University , ▁Washington , ▁D . C ., ▁in ▁The odore ▁Ko pp any i ' s ▁Department ▁of ▁Ph arm ac ology ▁and ▁Th era pe ut ics . ▁Professor ▁Ko pp any i ▁introduced ▁him ▁to ▁the ▁ch ol iner g ic ▁field . ▁He ▁became ▁a ▁fellow ▁at ▁Ster ling ▁Win th rop ▁Research ▁Institute , ▁R ens sel a er , ▁New ▁York ▁from ▁ 1 9 5 3 ▁to ▁ 1 9 5 6 , ▁where ▁he ▁was ▁a ▁member ▁of ▁a ▁team ▁which ▁developed ▁Am ben on ium ▁( My tel ase ), ▁a ▁drug ▁still ▁used ▁in ▁the ▁treatment ▁of ▁my as then ia ▁gra vis