▁phys ic ist , ▁known ▁mainly ▁for ▁his ▁work ▁at ▁the ▁We iz mann ▁Institute ▁of ▁Science . ▁ ▁Biography ▁ ▁Early ▁years ▁Blo ch ▁was ▁born ▁in ▁Del at yn , ▁Gal icia , ▁then ▁Aust ro - H ung arian ▁mon archy , ▁on ▁April ▁ 1 , ▁ 1 9 0 0 , ▁to ▁a ▁family ▁of ▁Hass id ic ▁Jewish ▁sch ol ars ▁and ▁rabb is , ▁descend ants ▁of ▁the ▁Ba ' al ▁Sh em ▁T ov . ▁In ▁ 1 9 1 4 , ▁at ▁the ▁beginning ▁of ▁World ▁War ▁I , ▁his ▁family ▁moved ▁to ▁Prag ue . ▁ ▁Blo ch ▁studied ▁physics ▁at ▁the ▁Prag ue ' s ▁German ▁Charles - F erd inand ▁University , ▁where ▁he ▁received ▁in ▁ 1 9 2 4 ▁his ▁degree ▁of ▁Doctor ▁of ▁Natural ▁Sciences ▁( Dr . ▁r er . ▁nat .) ▁with ▁hon ors . ▁Blo ch ▁stayed ▁at ▁the ▁university ▁as ▁a ▁research ▁assistant ▁to ▁Professor ▁B ied le , ▁dev oting ▁his ▁work ▁to ▁research ▁on ▁canal ▁ray s , ▁di pole ▁moments , ▁inf ra - red ▁and ▁micro ph ot ography . ▁ ▁In ▁ 1 9 2 0 , ▁at ▁age ▁ 2 0 , ▁his ▁father ▁died ▁and ▁Blo ch , ▁who ▁wanted ▁to ▁ear n ▁his ▁living ▁by ▁himself , ▁started ▁to ▁work ▁as ▁a ▁journalist ▁in ▁the ▁German - language ▁newspaper ▁Pra ger ▁Tag blatt . ▁There , ▁while ▁studying ▁and ▁working ▁on ▁his ▁scientific ▁research , ▁Blo