
joonn crossley

oru engleesh jyothishaasthranjanum ganithashaasthranjanumaaya joonn crossley (1762-1817), "nottikkal almaanaakkinte" computeraaya greenvichile royal obsarvettariyil sahayiyum, shaasthreeya paryaveshanatthinte samudrayaathrakalekkurichu nireekshakanum spittalfields maathamaattikkal sosaittiyile amgavum prasidantumaayirunnu.
jeevitam.
joonn crossley yorksheyarilaanu janichathenkilum jyothishaasthranjanaaya royal nevil maskelinte greenvichile royal obsarvettariyil sahayiyaayi jolie cheiyunnathinu munbu addehathinte jeevithathekkurichu valarekkurache ariyoo. 1798-lum veendum 1793-lum addeham nireekshanaalayatthinte sahaayiyayirunnu. havayiyil kollapetta vilyam goochinu pakaram amerikkayude vadakkupadinjaaran theerathekkulla jorjju vaankoovarinte paryaveshanathinaayi 1793-num 1798-num idayil rekhamsha board niyogicha oru nireekshakanaayirunnu addeham. eee yaathrayil addehathinte kappal okinaavaykkaduthulla oru parakkettil thakarnnu, addeham mattoru sloopil englandilekku madangi. addehathinte shambalam prathivarsham 400 poundaayirunnu, ennaal thante pusthakangalum upakaranangalum nashtappettathinu board oof longityoodil ninnu nashtapariharam thedi addeham kurachu varshangal chelavazhichu, aathyanthikamayi mattoru 400 poundu prathiphalam labhichu. board niyogicha nireekshakanenna nilayil thanikk nalkia upakaranangal upayogikkukayum paripalikkukayum cheyyendathundu. thomas ernshah nirmmicha moonnu timekeepparmaarum joonn arnold nirmmicha oralum ithil ulppedunnu. kappalinte thakarchayekkurichu oru vivaranam nalkunnathadakkam thante ellah nireekshanangalum abhimukheekaricha prashnangalum addeham rekhappeduthiyittundu.
1798-leeii venalkkaalath crossley eathaanum maasangal rajakeeya nireekshanaalayathilekku madangi. pinneedu oostreliyayude (1801-1803) maatt flindezhsinte bhramanathinu nireekshakanaayi niyamikkapettu, ennirunnaalum 1802-ll mosham aarogyam addehathe madangaan nirbandhithanaakki, nalla pratheekshayude paridhi vare maathram ethi. eee yaathrayil addeham jyotishaasthra chandra-dhoora reethiyum samayapalanavum upayogichu sthaanathe, prathyekichu rekhaamshathekkurichulla nireekshanangal nadatthi.
greenvichile jyothishaasthranjanaaya nevil maskelinte sahayiyaayi pravarthicha crosley 1799 muthal jeevithakalam muzhuvan varumaanathinte oru pradhana srothassaaya "nottikkal almaanaakkinte" computeraayi addeham niyamichu. 31 varshatholam spittalfields maathamaattikkal sosaittiyil amgamaayirunna addeham 1800 muthal 1817ll marikkunnathuvare athinte presidentaayi. 54 north street, sitti rooad, thudarnnulla entriyil 84 leonard street ennividangalil thaamasikkunnathayi sosaitti angathwa pattikayil addeham rekhappeduthappettu. 1813-leeii ganithashaasthra sosaitti scrapbookil ulppeduthiya addehathinte oru kothupani addeham annu "ganithashaasthra sosaittiyude 13 varshathe president" aayirunnuvennu rekhappeduthunnu.