OCR Text |
Show n f 54 DE INSTRVMENTIS "i lia. Sic cnim rcéta cf. crir chorda ipfius arcus eb.Sinus autcm verl'us n lis arcus crit real bf. Er linus fccundus filmeéta : quia finus rcéfus a‘r. ms or a. quod el'c complemcnmm arcus ebr. Dcinde, [icut linus torus {cu maximus bd. per refills ipfius efg. Scipfius ado. diametri parallclm (qux quadrantcs acb. bgc. in arcus :rquos diuidunt ) (warm in per‘ tioncs inxqualcs ;im & fingula: iplius bd xquidiflamcs , vtpote ipfam hx.& cpstcrc ipii parallcli per linens :‘1 punc‘lis fingulis {eélionum lines: bdxul punt‘i‘um c.concurrentes,iu totidcm Partcs proportionales diflin guuntur. Atquc ita,flcut lad. femidiamcter; im Sc ipfi xquidiflans hx. & fingulm ipfirum paralleliflanquam fines maximi) dil'tinguuntur in files {inns per diéhs lincas ad c.pun&um concurrentes.Vt fcilicermon Itituto queuis [inu max" cui deberur circuli quadrans, tunc &fingu'lis cius partibus arcus dcbiti adicribitur. Vt exc1nplicauih,poflto hx. (mu max"; iinui KLdCbitus arcus lit geficutipfl hKIel'pondct quadti‘s bgc. Item tunciinus verlhs arcus bg.crir reéh hl. (ond, ii ducatur re- ch gecui ad punélum m.occurrat limpamllclus ipfius lg.ip{al1n.ficr {i nus {ccundus arcus gc.dum finus hK.ponitur maximus. Qieniam fie {ecundum quam propertienem brcuia tur iinus maximusr, {ecu-ndum eandcm brcuianmr (‘5: linus particulates. H Pnopos i '1' is duabus Iincis , ex quibus vna {it cliuifa; reliquam , ad tandem proportioncm diuidcre. er triangle bcd.quorumcunquc fix: angulorumJn quo, ii dammm lincani diuil'a fit bca‘kpunfium diuiiin nis h.rcliqua iam cdfccabitut in pun &0.k.ad cidem proportioné,propter zqui difl‘antiam lincamm bd. hK. Vol Loco So>lvis,flue cuiuis cclypticx daro,declination:m 8: afccnfioné‘ rcétamadlfcrioore. Efto colurus folfiirialis 'abcd. cu-ius cum equator: comiiiumsfefihofit rcéhl aec.Cum eclyptica vero,rcél:a ta {allCCfoab:anI.-le1 cclypricce declinationc. Sitq; reéh linea bed.poii-. cgfinus reams unaumLpropofitnm‘: Tuc pug. Pum‘lzum dlicatur ipfi atcparallclus fithux 11mins {eého parallcli iolaris, (cu punfii propoiiricum iam crit compounds. areas aloerit pun-é‘ti propoiiri d:clin.1-rio.Mox diélce coluro:8c duéh fhc.perpédiculari ad 1p{:im aeoqux pcrpendicularis cit iam axis aquaton's: ficm: cfikg-luicg ad lpfamg h. fic fitper Prxccdcntcm 31mm: adipfam - finui debitus, crit afcéfio reé'ca Solis vel dati pfi 61:i,'a diéto punéto equinoctiy compumndaJtem, polite hk. iinu maximo,arcus finuigh. linui reCco rcfpondcns crit candem ream afcenlie. Hoe 1&0 ex doclrina finufi per ante prxmillam rm dim , tam Solis dcclinatie , quém [6&1 afccnfio notcfcct . S r a x. L AB, cuius légitudo ac latitude no. m: proponuntur, dcclinationcm aoretlain etiam afconfienem deform} nareJn cedem Coluri plano,abcd.mtelligatur filnllltCl‘fiEqquOl'lS qm dam diameter acc.Eclyrici veto diameter‘bed.& ponatur cngnca {inus rcaus arcus eclypticae inter pumflum :rquineélii proximum,& locum. ficllse. Ité arms bh.latitudo f'cellxzék lines. h k. ipfi b e d. pomllclusfiul gk. pcpcnt‘licularitcr oceuratzfinus {Clllcet reams dicta? latittidinis bl). mox per punctum k.ipii accparallelus eat inkn. quanam erlitcom mu nis iunctie parallcli {tells propoiithum .licto Coluro. Er idem? arcus.:m.crit quxiita (tells: declinano.',0\udod,ii punctum k.cadci'ct 'upcr xquatoris diametrfi acorn nc flclla in xguatorc efl'ct abfq; dcclicauonc. 1:6,pofito axc azquatoris fchiour cfl,lmea'mk, ad ipfam km.fic firhncma 1 ad lPi;'11n,l'e.Cl'ltquC lefmus rcaus afcéfioni i'ectce altri debitus,dum '{cilicct finus maximus ell: ae.linea. Vel km.fict " ‘ - _ S o I. x s vcl fiellx Ciiiufpiam orms lantudxmmgc clifl‘c-rcntmm afccn- I? abfoluitur Problcnm. -» u Tune 'enini iiofiro aefmu maximozarcus ipfi lo. maximus mn.linca. Itaque ex nous fimbusgam Per doctrinam dccimae propofitionis,tam declinatio , quhm rccta fiellz: afccnfio norm uc‘ . nicnt . licct bdrlinifa dctur it: punélo fitunc & llk. fimiliter {Ecabitur in punélo l. propter diélam (quidifiantiam,& triangulorum limilimdintm. Sic facile arfus cclyptlcgmter z‘equinofltille punftum, 8: _ k (inns prqdictm afcenfienis : {1 {up‘ponitur [inns A % (1 darce lineaeintclligimr bd.hk.vt {Ci 'u . ASTRONOMYCIS; ' lee.»- Tune fionalcm {ciihitai'i. In meridiani plane :1de intelligatur diameter ho(rizontis acc.di:1mcter autem xquatoris bedlta, vt arcus meridiani. a b. fit altitude aquatoris: quod til: complcmétum latitudinis loci,ad quf: quzeruntur prxclicm. Arcus autem ngit decli- natio Solis vcl fiellx pct prrennllhs coinpertg. Ducatur rccta gkdpfi bed.par§llolus.c1ii perpediculnris occurrat eh.portioic1hcct 3x15 3min: toris.Deinde ficut linen. gh.ad ipfam hk.lic [1th r . 1‘ f mlisnca be. ad ipfam Cl. Br habes lincam ck. {inum ' a can no i , diff-cram: clfmum rccmm Et ortiute. rectum latitudinis . nO be 1 in)" mJXll‘ , P 011:0 , I ' {Clem ‘d156n hkt i1" l [1n c I" l Itel1'} {11‘1th , llneal |