▁of ▁his ▁high ▁school ▁teachers ▁at ▁the ▁Kon an ▁Boys ' ▁High ▁School . ▁He ▁received ▁a ▁ ▁B . S . ▁in ▁physics , ▁and ▁hoped ▁to ▁study ▁nuclear ▁physics ▁with ▁B uns aku ▁A rak ats u ▁at ▁Ky oto ▁University . ▁However , ▁further ▁study ▁in ▁nuclear ▁physics ▁was ▁not ▁possible ▁in ▁post - war ▁Japan . ▁The ▁American ▁authorities ▁had ▁b anned ▁such ▁study , ▁and ▁instruments ▁and ▁testing ▁devices ▁had ▁been ▁removed ▁or ▁destroyed . ▁ ▁Est ab lish ing ▁a ▁company ▁ ▁Hor iba , ▁who ▁was ▁in ▁his ▁second ▁year ▁at ▁Ky oto ▁University , ▁left ▁the ▁university ▁in ▁ 1 9 4 5 ▁to ▁start ▁his ▁own ▁business , ▁Hor iba ▁Radio ▁Labor atory ▁( H RL ). ▁In ▁addition ▁to ▁producing ▁electronic ▁parts ▁and ▁repair ing ▁electronic ▁instruments , ▁they ▁re condition ed ▁batter ies . ▁The ▁power ▁distribution ▁system ▁after ▁the ▁war ▁was ▁un re li able , ▁so ▁there ▁was ▁a ▁strong ▁demand ▁for ▁storage ▁batter ies ▁for ▁electric ▁lights ▁that ▁could ▁be ▁used ▁in ▁the ▁case ▁of ▁black outs . ▁Hor iba ▁acquired ▁disc arded ▁storage ▁batter ies ▁and ▁selenium ▁rect ifiers ▁which ▁the ▁company ▁N ih on ▁Den chi ▁had ▁produced ▁for ▁w art ime ▁use . ▁Sales ▁of ▁Hor iba ' s ▁re condition ed ▁" Te ident o " ▁batter ies ▁were ▁a ▁prof itable ▁source ▁of ▁income ▁for ▁the ▁Hor iba ▁company . ▁ ▁One ▁of ▁the ▁instruments ▁that ▁Hor iba ▁produced ▁and ▁rep a ired ▁was