▁possible ▁cos mic ▁ray ▁expos ure , ▁it ▁was ▁also ▁suggested ▁that ▁the ▁plane ▁of ▁the ▁cloth ▁be ▁aligned ▁per pend icular ▁to ▁the ▁ground . ▁ ▁American ▁research er ▁Alan ▁D . ▁Ad ler , ▁confirm ing ▁the ▁presence ▁of ▁bil ir ub in ▁on ▁the ▁fabric , ▁noted ▁that ▁it ▁is ▁not ▁light - stable ▁and ▁may ▁change ▁the ▁color ▁under ▁any ▁light . ▁According ▁to ▁Ad ler , ▁since ▁the ▁image ▁fib ers ▁are ▁at ▁or ▁near ▁s atur ation ▁while ▁the ▁surrounding ▁cloth ▁is ▁not , ▁the ▁latter ▁will ▁gradually ▁get ▁dark er ▁ ▁until ▁the ▁image ▁first ▁becomes ▁a ▁sil hou ette ▁and ▁later ▁finally ▁van ishes . ▁ ▁See ▁also ▁ ▁Fr inge ▁theories ▁about ▁the ▁S hr oud ▁of ▁Tur in ▁ ▁History ▁of ▁the ▁S hr oud ▁of ▁Tur in ▁ ▁Rad i oc ar bon ▁d ating ▁of ▁the ▁S hr oud ▁of ▁Tur in ▁ ▁References ▁ ▁C ▁S hr oud ▁of ▁Tur in ▁S hr oud ▁of ▁Tur in <0x0A> </s> ▁Peter ▁Alan ▁St oll ery ▁( born ▁November ▁ 2 9 , ▁ 1 9 3 5 ) ▁is ▁a ▁former ▁Canadian ▁politician ▁and ▁business man . ▁ ▁Background ▁An ▁old ▁York ville ▁family , ▁the ▁St oll ery s ▁owned ▁a ▁famous ▁furn ish ings ▁store ▁named ▁St oll ery ' s , ▁which ▁opened ▁in ▁ 1 9 0 1 ▁in ▁dow nt own ▁Toronto . ▁Peter ▁St oll ery , ▁the ▁founder ’ s ▁grand son , ▁worked