The Description and Use of the Globes, and the Orrery: To which is Prefixed, by Way of Introduction, a Brief Account of the Solar System |
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Page vi
... Longest Day is , of any given Length less than 24Hours . 117 PROB . XXI . A Place being given in one of the Frigid Zones ( Suppose the Northern ) ; to find what Number of Days ( of 24 Hours each ) the Sun dotb conftantly shine upon the ...
... Longest Day is , of any given Length less than 24Hours . 117 PROB . XXI . A Place being given in one of the Frigid Zones ( Suppose the Northern ) ; to find what Number of Days ( of 24 Hours each ) the Sun dotb conftantly shine upon the ...
Page 78
... longest Day in the one , exceeds that in the othér by half an Hour . The whole Surface of the Earth , is confi- dered as being divided into 60 Climates , viz . from the Equator to each of the Polar Circles 24 , árifing from the ...
... longest Day in the one , exceeds that in the othér by half an Hour . The whole Surface of the Earth , is confi- dered as being divided into 60 Climates , viz . from the Equator to each of the Polar Circles 24 , árifing from the ...
Page 79
... Longest Latitude Breadth M. D. M. 58 [ 29 ос 14 18 I 20 1323 507 25 15 1962 2510 07 1.42 14 30 2016 30 16 20 63 220 57 14 36 286 ဝင် 17 2064 060 44 15 41 224 54 18 21 64 490 43 15 % 45 294 16. 149 013 03 19 21465 210 32 32 20 22 65 ...
... Longest Latitude Breadth M. D. M. 58 [ 29 ос 14 18 I 20 1323 507 25 15 1962 2510 07 1.42 14 30 2016 30 16 20 63 220 57 14 36 286 ဝင် 17 2064 060 44 15 41 224 54 18 21 64 490 43 15 % 45 294 16. 149 013 03 19 21465 210 32 32 20 22 65 ...
Page 112
... said of rectifying the Globe to North Latitude , holds for the fame Latitude South ; only that before the longest Days were , when the Sun was in , the fame 1 fame happening now when the Sun is in ; and 112 The Use of.
... said of rectifying the Globe to North Latitude , holds for the fame Latitude South ; only that before the longest Days were , when the Sun was in , the fame 1 fame happening now when the Sun is in ; and 112 The Use of.
Page 115
... Longest Day , and Shorteft Night , is when the Sun is in the SNorthern Southern Tropick ; and the contrary . PROB . XVIII . The Latitude of any Place , not exceeding 661 Degrees , and the Day of the Month being given , to find the Time ...
... Longest Day , and Shorteft Night , is when the Sun is in the SNorthern Southern Tropick ; and the contrary . PROB . XVIII . The Latitude of any Place , not exceeding 661 Degrees , and the Day of the Month being given , to find the Time ...
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Common terms and phrases
12 at Noon according Aftronomers alfo alſo Angle appears Arctick Circle Azimuth becauſe betwixt called Center Conftellations Courſe Darkneſs Days and Nights Declination defcribed Diſtance Diurnal Arches Diurnal Motion Eaft Eaſtern Eclipfe Ecliptick Equator Equinoctial faid fame manner feem feen felf fhall fhew find the Hour firft firſt fixed Stars fome fometimes ftand fuppofe given Place Heavens Hemiſphere Horizon Inferior Planets interfect Jupiter Latitude Length longeſt Day Longitude Mars Meaſure Mercury Meridian Month being given Moon move muſt Nodes North Pole Number obferve oppofite Orrery paſs Pofition Polar Circles PROB Quadrant of Altitude reaſon reckon rectified the Globe refpect repreſented ridian Rifing and Setting rizon round its Axis round the Earth round the Sun Saturn ſeen ſet ſhe ſmall Solftitial South Pole Sun-rifing Sun's Place Synodical Month thefe theſe thofe Places thoſe who live Tropick tude turn the Globe turns round Venus vifible Weft Weſtern Zenith
Popular passages
Page 32 - The circumference of every circle is supposed to be divided into 360 equal parts, called degrees ; each degree into 60 equal parts, called minutes ; and each minute into 60 equal parts, called seconds.
Page 29 - A sphere is a solid, bounded by one continued convex surface, every point of which is equally distant from a point within, called the centre. The sphere may be conceived to be formed by the revolution of a semicircle about its diameter, which remains fixed.
Page 87 - Bring the given place to the brazen meridian, and fet the index to the given hour ; then turn the globe, until the place where the hour is required, comes to the meridian ; and the index will point to the hour at that place. PROBLEM VII. Tojind the Suit's Place in the Ecliptic, and his Declination, for any given Day in the Year.
Page 21 - ... to suppose that all the fixed stars are placed at the same distance from us ; but it is more probable that they are everywhere interspersed through the vast indefinite space of the universe, and that there may be as great a distance between any two of them as there is between our sun and the nearest fixed star. Hence it follows why they appear to us of different magnitudes, not because they are at different distances from us, those that are nearest excelling in brightness and lustre, those that...
Page 67 - ... the days of the one are equal to the nights of the other, and vice versa, when the days of the one are at the longest, they are shortest at the other.
Page 32 - ... brought into England from the Netherlands in the year 1524. There are many kinds, hut the two best sorts are the white and grey kind : the latter is a large square hop, more hardy, and is the more plentiful bearer, and ripens later than the other. HORARY circle, of a globe, is fixed upon the brazen meridian, divided into 24 hours, having an index moveable round the axis of the globe, which upon turning the globe 15 degrees, will shew what places have the sun an hour before or after us : and will...
Page 132 - Bring the place at which the hour is given to the meridian, and set the index to the given hour ; then turn the globe till the other place...
Page 144 - Hinges fupport the whole Machine, when it is lifted up, according to any Latitude; and the Arch, at other Times, lies conveniently under the BottomFrame. When the Machine is fet to any Latitude, (which is eafily done by two Men, each taking hold of two Handles, conveniently fixed for...
Page 74 - ... the ring or circle in which the artificial globe is suspended by means of the axis ; it is divided into four quadrants, of 90 degrees each. Two of these are' numbered from the equator towards the poles, for the purpose of showing the latitudes of places, or the declinations of the celestial bodies : the other two quadrants are numbered from the poles towards the equator, and are used for elevating the poles of the globe. 106. The CIRCLES on the globe are of two kinds, great and less. GREAT CIRCLES...
Page 81 - ... the latitude. Having elevated the globe according to its latitude, count the degrees thereof upon the meridian from the equator towards the elevated pole, and that point will be the zenith, or the vertex of the place ; to this point of the meridian, fasten the quadrant of altitude, so that the graduated edge thereof may be joined to the said point. Having brought the sun's place in the ecliptic to the meridian, set the hour index to XII' at noon, and the globe will be rectified to the sun's place.