: Collections ▁of ▁the ▁York ▁Arch ae ological ▁Trust ▁Category : F ec es ▁Category : History ▁of ▁North ▁York shire ▁Category : Arch ae ology ▁of ▁England ▁Category : L loy ds ▁Bank ing ▁Group ▁Category : 1 9 7 2 ▁in ▁England ▁Category : 1 9 7 2 ▁arch ae ological ▁discover ies <0x0A> </s> ▁Leopold ▁God ow sky ▁Jr . ▁( May ▁ 2 7 , ▁ 1 9 0 0 ▁– ▁February ▁ 1 8 , ▁ 1 9 8 3 ) ▁was ▁an ▁American ▁viol in ist ▁and ▁chem ist , ▁who ▁together ▁with ▁Leopold ▁Mann es ▁created ▁the ▁first ▁practical ▁color ▁trans par ency ▁film , ▁K od ach rome . ▁ ▁Begin ning ▁Mann es ▁and ▁God ow sky ' s ▁experiment ation ▁with ▁color ▁phot ography ▁began ▁in ▁ 1 9 1 7 , ▁after ▁seeing ▁the ▁film ▁Our ▁Navy ▁in ▁P riz ma ▁Color , ▁which ▁was ▁advert ised ▁as ▁a ▁color ▁film . ▁Because ▁of ▁the ▁low ▁quality ▁the ▁boys ▁felt ▁che ated ▁and ▁decided ▁to ▁do ▁something ▁about ▁it . ▁They ▁designed ▁a ▁movie ▁camera ▁and ▁project or ▁each ▁with ▁three ▁l enses ▁covered ▁by ▁orange - red , ▁green ▁and ▁blue - v io let ▁filters . ▁They ▁took ▁multiple ▁black - and - white ▁expos ures ▁and ▁project ed ▁them ▁back ▁through ▁the ▁filters . ▁They ▁pat ented ▁this ▁system , ▁but ▁it ▁was ▁not ▁a ▁commer cially ▁vi able ▁process . ▁ ▁Personal ▁life ▁God ow sky ▁studied ▁viol