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cause_n cast_v dwell_v zone_n 18 3 15.6311 5 false
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A15751 The description and vse of the sphaere· Deuided into three principall parts. Whereof the first intreateth especially of the circles of the vppermost moueable sphære, and of the manifold vses of euery one of them seuerally. The second sheweth the plentifull vse of the vppermost sphære, and of the circles thereof joyntly. The third contayneth the description of the orbes whereof the sphæres of the sunne and moone haue been supposed to bee made, with their motions and vses. By Edvvard Wright. The contents of each part are more particularly set downe in the table. Wright, Edward, 1558?-1615. 1627 (1627) STC 26022; ESTC S120334 50,441 102

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much are the poles of the Ecliptick distant from the Poles of the world CHAP. XVI Vses of the Polar Circles 1. THe Polar Circles shew the poles of the Zodiack and shew their distance from the poles of the Equinoctiall 2. The temperate Zones are bounded by these polar circles for the Articke circle boundeth the North side of the North temperate Zone and the Antartick circle boundeth out the South side of the South temperate Zone 3. The Polar circles separate the temperate Zones from the cold Zones which they compasse round about and inclose within them Therefore the foure lesser circles that is the two Polar circles and the Tropicks deuide Heauen and Earth into fiue Zones CHAP. XVII Of the Zones A Zone is a space of Heauen or Earth conteyned betweene two of the smaller Circles or inclosed within the compasse of either Polar circle They are called Zones that is as much to say as girdles because they compasse about Heauen or Earth like a girdle The Zones are deuided by auncient Writers into two kindes that is into temperate and vntemperate Zones A temperate Zone is the space of Heauen or earth conteyned betweene either of the Tropicks and the next Polar circle There be two temperate Zones the one North the other South The North temperate Zone is conteyned betweene the Tropicke of Cancer and the Artick polar circle The South temperate Zone is that which is conteyned betweene the Tropicke of Capricorne and the Antartick polar circle They are called temperate Zones because they haue a better temperature of the ayre for the most part and more meer for habitation then the vntemperate Zones The bredth of eyther temperate Zone is alwayes equall to the complement of the distance of the Tropicks and therefore in this age is about 43. degrees that is 2580. English miles There be two kinde of vntemperate Zones the one exceeding in heat the other in cold for the most part The hot vntemperate Zone called also the Torrid that is the burnt or broyled zone is that space of Heauen or Earth which is conteyned betweene the tropicks It is called the burnt Zone because that by reason of the Sunnes continuall going ouer that zone and casting his beames directly downe thereupon it is scorched with ouer-much heat and is not so meet to be inhabited as the temperate zones The bredth of this Zone is alwayes equall to the obliquitie of the Zodiack or greatest declination of the Sunne doubled which in our time is about 47. degrees that is 2820. English miles The cold or frozen zones are the spaces of Heauen or earth conteyned within the Polar circles There be two cold zones the one North conteyned within the compasse of the Articke circle the other South conteyned within the compasse of the Antartick Polar circle These zones exceed in cold because they want the sight of the sunne for a great part of the yeare and when the Sunne appeareth vnto them his beames fall so obliquely vpon them that they can in all likelyhood receiue but small heat thereby for the most part The bredth of these Zones is measured from the Poles of the world to the Polar circles and therefore must alwayes bee so much as the Polar circles are distant from the Poles that is in our age about 23. Degrees and a halfe which make 1410. English miles CHAP. XVIII The difference of Shadowes that the Sunne maketh in these Zones THey that dwell in the torride Zone doe cast their shadowes which the Sunne maketh at noone which we may therefore call their noone shadowes both towards the North and towards the South towards the North when the sunne is betwixt their zenith and the south point of the Horizon and towards the South where the sunne is betweene their Zenith and the North. For seeing the zenith of them that dwell in that Zone is betweene the Tropicks the sunne must needs bee sometimes Northwards from their zenith and so make a south shadow and sometime Southwards and then make a north shadow For which cause they that inhabite this Zone are called Amphiscij that is such as cast their noone shadowes on both sides But they that dwell in the temperate Zones are called Heteroscij that is such as cast their shadowes at noone one way onely For they that dwell in the North temperate Zone haue the Sunne alwayes at noone from their Zenith Southwards and therefore must needs alwayes cast their noone shadowes Northwards Whereas contrariwise they that inhabit the South temperate Zone hauing the Sunne at noone alwayes Northwards from their Zenith must needs haue their shadowes at noone alwayes towards the South And they that are in the cold Zones are called Periscij that is such as cast their shadowes round about them For seeing the Sunne continueth euery yeare for certaine dayes together alwayes aboue their Horizon and therefore moueth round about them without setting it must needs bee that their shadowes also are carried round about them falling towards all parts of the world in the space of 24. houres * ⁎ * THE SECOND PART Of the vses of the vppermost SPHAERE and of the Circles thereof joyntly PROP. I. To rectifie the Sphaere to the Latitude c. FIrst finde by obseruation or otherwise the height of the Pole or Latitude of that place for which you would rectifie the Sphaere Then by turning about the Meridian of the Sphaere lift vp or put downe the North Pole of the Sphaere about which the houre circle is fastened till the arch of the Meridian from the North part of the Horizon vpwards vnto the Pole be iust so many degrees as the eleuation of the Pole or latitude of the place was found to be for so haue you the Sphaere duly rectified As for example the Latitude of the Citie of London is 51. degrees and 32. minutes therefore if you lift vp the North Pole of the Sphaere aboue the North part of the Horizon so many degrees and minutes you shall haue your Sphaere rectified for that place PROP. II. To know the place of the Sunne c. LOoke the day of the moneth for which you desire to know the place of the Sunne in the Horizon and see what signe and degree of the Zodiacke vpon the Horizon answereth thereto for there haue you the place of the Sunne Take for example the 25. of December looke this day therefore in the Horizon and you shall finde answerable thereto 13. degrees and about 40. minutes of Capricorne which is the place of the Sunne at that time PROP. III. To know the declination of the Sunne c. BRing the point whose declination you desire to know vnto the Meridian of the Sphaere and look what number of degrees and minutes of the Meridian is conteyned betweene that point and the Equinoctiall for so much is the declination As if you would know the declination of the 10. degree of Taurus bring that degree to the Meridian and you shall finde the arch of the Meridian between