
andrew graham (jyothishaasthranjan)

irelandile irvenstaun kaundi fermanagil janicha andrew graham (8 epril 1815-5 november 1908) oru airish jyothishaasthranjanum bhramanapatha computer 9 mettis chhinnagraham kandethiyayaalumaayirunnu.
kaundi sligoile maarkriyile jyothishaasthranjan.
1842-ll vadakkupadinjaaran irelandile kaundi sligoile markri nireekshanashaalayil jolie cheyyaan graahathe niyamichu. 1830ll kenal edward joshuva kooppar (1798-1863) thante raajya estettile oru swakaarya sthaapanamaayi eee nireekshanaalayam sthaapichu. mikacha jyotishaasthra upakaranangal kooppar athil sajjeekarichu. maarkriyile oorjjaswalanaaya nireekshakanaayi graham maari.
1848 epril 25 nuu jarmman upakarana nirmmathaavaaya ertel vaalnakshatram thirayunnathinaayi nirmmicha 3 inch apperchar wide feeld dooradarshini upayogichu nireekshikkunnathinidayil markriyiyil ninnu graham 9 mettis kandethi.
athinumumbu ettu cheria grahangal maathrame ariyappettirunnulloo, aadya naalu grahangal aii. dii. 1 kaalaghattatthil kandethiyirunnu, thalphalamaayi graahatthinte kandethal ganyamaaya shradha aakarshichu. addehathinte ganithashaasthraparamaaya kazhivukal cheria grahatthinte bhramanapatham kanakkakkaanum sooryanuchuttum athinte bhramanapathathil grahangalude guruthwaakarshana phalangal ulppede bhaaviyilekku athinte prathyaksha sthaanam pravachikkanum addehathe anuvadichu.
1848 august 8 num 1856 march 27 num idayil edutha grahanapathathiludaneellamulla arupathinaayiratholam nakshathrangalude nireekshanangal ulkkollunna marcree kaattalogil graham pinneedu pravartthikkukayum yathaakramam 1851,1853,1854,1856 varshangalil naalu vaalyangalayi prasidheekarikkukayum cheythu. ithil pravartthikkumbol, addeham square baar micrometer vikasippichu, ithu aakasha vasthukkalude sthaanangal (sariyaaya aarohanavum pathanavum) nirnnayikkunnathinulla karyakshamatha valareyadhikam vardhippichu.
graham dhaaraalam dhoomakethukkalude bhramanapathangal kanakkakki. iva addehathinte thozhiludamayude "koomattik oorbitts" enna pusthakatthil upayogichu.
maarkriyile thante sthaanathu ninnu raaji vacha graham 1864 maarchil kembridjil puthiya jolie aarambhichu.
kembridge obsarvettariyile asisttant.
1864 muthal 1903 vare englandile kembridge obsarvettariyil phastt asisttantaayi graham pravarthichu.
germmaniyile astronomishe geselshaft samghadippicha 9.5 maagnityoodinekkaal thilakkamulla nakshathrangalude kattalogilekkulla nireekshanaalayatthinte sambhavanayaaya kembridge soonn kaattalogil addeham avide pravarthichu. ithu pala tharatthil maarkriyile addehathinte srishtiyude vipuleekaranamaayirunnu, ennaal grahanathinu vadakku kurachu akaleyulla nakshathrangalkk. 24°num 31°num edayilulla 14,464 nakshathrangalude pattika 1897ll prasidheekarichu.
pathiv ganithashaasthra kanakkukoottalukal nadatthaan oru 'lady computer' aayi jolie cheythirunnenkilum, vijayakaramaya professional pankaalitthatthil graahavumaayi nireekshana jolikal pathivayi pankitta aan vaakkarumaayi graham nireekshanatthil sahakarichu.
1903ll 88-aamm vayassil cambridge obsarvettariyile thante sthaanathu ninnu graham viramichu. kembridge sarvakalashaala addehathinu pension nalki. 1908ll 93-aamm vayassil addeham kembridjil vachu marichu.