▁in ▁industry . ▁His ▁name ’ s ▁claim ▁to ▁fame ▁rest s , ▁however , ▁on ▁a ▁little ▁expl ored ▁foot note ▁inserted ▁by ▁Michel son ▁and ▁Mor ley ▁in ▁their ▁famous ▁paper ▁“ On ▁the ▁Rel ative ▁Mot ion ▁of ▁the ▁Earth ▁and ▁the ▁L umin ifer ous ▁E ther ”. ▁ ▁Biography ▁Born ▁in ▁ 1 8 4 0 , ▁Pot ier ▁entered ▁the ▁É cole ▁Poly te chni que ▁at ▁age ▁ 1 7 , ▁where ▁in ▁ 1 8 6 7 ▁he ▁became ▁a ▁physics ▁teacher , ▁and ▁then ▁in ▁ 1 8 8 1 ▁full ▁Professor ▁of ▁Physics , ▁succeed ing ▁J amin ▁and ▁preceding ▁Nobel ▁La ure ate ▁Henri ▁B ec quer el . ▁At ▁the ▁same ▁time , ▁he ▁was ▁member ▁of ▁the ▁State ▁M ining ▁Engine ers ▁Corps , ▁occup ying ▁the ▁chair ▁of ▁Physics ▁in ▁the ▁É cole ▁des ▁M ines ▁where ▁he ▁taught ▁Henri ▁Po inc ar é . ▁Ge ological ▁works ▁included ▁revis ions ▁of ▁the ▁ge ological ▁map ▁of ▁France ▁and ▁sub marine ▁top ograph ies ▁in ▁Pas - de - Cal ais ▁in ▁order ▁to ▁examine ▁the ▁feas ibility ▁of ▁a ▁tunnel ▁to ▁England . ▁These , ▁and ▁his ▁valor ▁during ▁the ▁German ▁sie ge ▁of ▁Paris ▁in ▁ 1 8 7 0 , ▁earned ▁him ▁the ▁L ég ion ▁d ' honneur . ▁His ▁other ▁publications ▁concerned ▁F res nel ’ s ▁theories ▁of ▁light ▁and ▁the ▁ ether , ▁diff raction ▁of ▁polar ized ▁light , ▁elli pt