ch ▁became ▁a ▁senior ▁journalist ▁and ▁held ▁the ▁position ▁for ▁ten ▁years , ▁until ▁ 1 9 3 0 . ▁ ▁In ▁ 1 9 2 9 , ▁Blo ch ▁was ▁invited ▁by ▁Professor ▁Jacques ▁Er rera ▁to ▁work ▁with ▁him ▁at ▁Br uss els ' ▁Univers ité ▁Lib re ▁as ▁a ▁senior ▁research er ▁at ▁the ▁chemical ▁physics ▁department . ▁Blo ch ▁worked ▁there ▁in ▁the ▁area ▁of ▁inf ra - red ▁spect ro sc opy . ▁ ▁We iz mann ▁Institute ▁of ▁Science ▁In ▁the ▁spring ▁of ▁ 1 9 3 4 , ▁upon ▁found ing ▁the ▁Daniel ▁Sie ff ▁Research ▁Institute ▁( l ater ▁the ▁We iz mann ▁Institute ▁of ▁Science ), ▁in ▁Re hov ot , ▁Palest ine ▁( E ret z - Is rael ), ▁ ▁Cha im ▁We iz mann ▁invited ▁Blo ch ▁to ▁take ▁part ▁in ▁the ▁establishment ▁of ▁the ▁Institute ▁and ▁to ▁head ▁its ▁Physics ▁Department . ▁Initial ly ▁Blo ch ▁joined ▁Dr . ▁We iz mann ' s ▁team ▁in ▁London ▁and ▁worked ▁for ▁about ▁a ▁year ▁at ▁the ▁University ▁of ▁Cambridge , ▁then , ▁in ▁the ▁fall ▁of ▁ 1 9 3 5 , ▁he ▁arrived ▁in ▁Re hov ot . ▁So on ▁after , ▁because ▁of ▁severe ▁budget ary ▁difficulties ▁of ▁the ▁new ▁inst itute , ▁Blo ch ▁took ▁upon ▁himself , ▁in ▁the ▁beginning ▁of ▁ 1 9 3 6 , ▁the ▁task ▁of ▁man aging ▁the ▁inst itute ▁in ▁addition ▁to ▁his ▁capacity ▁as ▁the ▁head ▁of ▁the ▁physics ▁department