Marinus was the first who laid down the position of places on a projection according to their latitude and longitude, but the projection used by him was of the rudest.
There is one set of numbers he changes for the time and he can set the location somehow by longitude and latitude.
The longitude of Darchendo, or Tachienlu, on the extreme east, may be accepted as another obligatory point.
The Mediterranean occupies nearly half the inhabited world in longitude, and the east coast of Africa is shown as if it extended due east.
The longitude value now adopted is 94° 54' E.
It consisted essentially in the adoption of Delauny's final numerical expressions for longitude, latitude and parallax, with a symbolic term attached to each number, the value of which was to be determined by substitution in the equations of motion.
The longitude of the Tashkent observatory has been determined by telegraph differentially with Pulkova as follows: H.
In India geodetic triangulation furnishes exact sur- the basis for exact surveys as far east as the eastern veys in boundaries of Burma in longitude about loo E.
The ocean separating Europe from he was dependent upon dead reckoning, for although various methods for determining a longitude were known, the available astronomical ephemerides were not trustworthy, and errors of 30 in longitude were by no means rare.
The boundary line corresponded to the both degree of longitude west of Greenwich, which strikes the main ' The exact position has been disputed.
Treating the earth as a sphere, the meridians of longitude are all great circles.
The continent of Asia stretches two arms into the Pacific Ocean, Kamchatka in the north and Malacca in the south, between which lies a long cluster of islands constituting the Japanese empire, which covers 370 14 of longitude and 29 II of latitude.
"Great" circles may also be defined as circles on a sphere which pass through the extremities of a diameter; they are familiar as the meridians or lines of longitude of geographers; lines of latitude are "small circles."
M., passing through more than twelve degrees of longitude or 750 m.
During the voyage he experimented upon the determination of longitude by lunar distances, and ultimately effected the introduction of the method into navigation (q.v.).
Latitudes from the observations of travellers may generally be trusted, but longitudes should be accepted with caution; for so competent an observer as Captain Speke placed the capital of Uganda in longitude 32° 44' E., when its true longitude as determined by more trustworthy observations is 32° 26' E., an error of 18'.
By the end of 1771 his scientific reputation was such that he was suggested for the post of "astronomer" to Captain Cook's second expedition to the South Seas, but his unorthodox opinions were objectionable to certain members of the board of longitude and the appointment was not ratified.
(22) Conjugate functions can be employed also for the motion of liquid in a thin sheet between two concentric spherical surfaces; the components of velocity along the meridian and parallel in colatitude 0 and longitude A can be written d¢_ i _ d4, I dip _ dy (13) d8 sin - 0 dX' sin 0 dX de' and then = F (tan O.
From the transverse breach of the Keriya-darya (about 811° E.) to that of the Kara-muren in the longitude of Cherchen (about 852° E.) the parallel border-ranges of the Tibetan plateau trend to the E.N.E., and here occur in the lower or outer range the passes of Dalai-kurghan-art (14,290 ft.), Choka-davan, i.e.
In 1763 he published the British Mariner's Guide, which includes the suggestion that in order to facilitate the finding of longitude at sea lunar distances should be calculated beforehand for each year and published in a form accessible to navigators.
From its western extremity, on the isthmus of the Akrotiri peninsula, which lies between the Bay of Canea and the Bay of Suda (latitude 35° 31' N., longitude 24° i' E.).
It marks the first meridian of longitude in Hindu geography.
Particulars arising from comparing one part with another "; but under this head the questions discussed were longitude, the situation and distances of places, and navigation.
St Petersburg, again, is connected with Greenwich by European systems of triangulation; and the Greenwich meridian is adopted by Russia as the zero for all her longitude values.
.o K il -ju tong-chin A B Longitude East 14 of Greenwich C 8° 3: E 44 legend, were bathing one day in a lake under the Chang-pai-Shan mountains when a passing magpie dropped a ripe red fruit into the lap of one of them.
Same Scale as main map Longitude Nest 84 Greenwich 0 Of the rivers the most important are the St Johns, which flows N.
The correct relations in the length of degrees of latitude and longitude are maintained in the first case along the latitude of Thule and the equator, in the second along the parallel of Agisymba, the equator and the parallels of Meroe, Syene and Thule.
The astrolabe quadrant or cross-staff enabled the mariner to determine"his latitude with a certain amount of accuracy, but for his longitude 1 See fig.
Putney/ Meridian o° of Greenwich - E Longitude East 0°4' of Greenwich ts.
Latitude, climate zones, longitude, &c.; and (3) the Comparative part, which " considers the From translator's preface to the English version by Mr Dugdale (1733), entitled A Complete System of General Geography,1 revised by Dr Peter Shaw (London, 1756).
At a printing-press established in Walther's house by Regiomontanus, Purbach's Theoricae planetarum novae was published in 1472 or 1473; a series of popular calendars issued from it, and in 1474 a volume of Ephemerides calculated by Regiomontanus for thirty-two years (1474-1506), in which the method of "lunar distances," for determining the longitude at sea, was recommended and explained.
At the most moderate estimate, his travels covered a space of thirty-one degrees of longitude, or 1700 miles, and twenty-four of latitude, or nearly the same distance.
It lies on both sides of the river Tigris, in an extensive desert plain which has scarcely a tree or village throughout its whole extent, in latitude 33° 20' N., longitude 44° 24' E.
The western boundary claimed by the republic was the Rio Grande to its source and the meridian of longitude from that point to the forty-second parallel, although as a political division of Mexico its limits never extended farther west than the Nueces and the Medina.
From it the exact time is conveyed each day at one o'clock by electric signal to the chief towns throughout the country; British and the majority of foreign geographers reckon longitude from its meridian.
Between the Pamirs and the transverse glen of the Kara-muren, that is, nearly to the longitude of the town of Cherchen (about 852° E.).
Exact surveys in Russia, based upon triangulation, extend as far east as Chinese Turkestan in longitude about 75° E.
Parallels and meridians were represented by straight lines intersecting each other at right angles, the relative proportions between degrees of longitude and latitude being retained only along the parallel of Rhodes.
The arid nature of the trans-Caspian deserts has proved an insuperable obstacle to those rigorous methods of geodetic survey which distinguish Russian methods in Europe, so that Russian geography in central Asia is dependent on other means than that of direct measurement for the co-ordinate values in latitude and longitude for any given point.
In the formulae which follow we suppose 1 and l' to represent the latitudes, a and b the co-latitudes (90° - 1 or 90° - l'), and t the difference in longitude between them or the meridian distance, whilst D is the distance required.
Ath ' K;idbrooke Hither Green: Wes i Bromley C Longitude West 0°4' of Greenwich Rai lways....-- underground Canals ' '; County Metropolitan Boroughs ...... :: ...
He was the first to employ mercury for the air-pump, and devised a method of determining longitude at sea by observations of the moon among the stars.
The interior of New South Wales and Queensland, all that lies east of the r40th degree of longitude, was examined.
Longitude, which culminates in the Altyn Tagh, and extends eastwards in a continuous water-divide to the Nan Shan mountains, north of the Koko Nor basin.
The interior of Greenland contains both summer and winter a pole of cold, situated in the opposite longitude to that of Siberia, with which it is well able to compete in extreme severity.
Sparse scrub timber, of little value except for posts, poles and rough beams and for fuel, occupies the region westward to approximately the longitude of the Pease river.
The first investigates mathematical facts relating to the earth as a whole, its figure, dimensions, motions, their measurement, &c. The second part considers the earth as affected by the sun and stars, climates, seasons, the difference of apparent time at different places, variations in the length of the day, &c. The third part treats briefly of the actual divisions of_the surface of the earth, their relative positions, globe and map-construction, longitude, navigation, &c. Varenius, with the materials at his command, dealt with the subject in a truly philosophic spirit; and his work long held its position as the best treatise in existence on scientific and comparative geography.
323), executed by Mason and Dixon in 1766-1768, and later the determination of the relative longitude of Greenwich and Paris (ib.
Although the method had been approved by Sir Isaac Newton before being presented to the Board of Longitude, and successfully practised in finding the longitude between Paris and Vienna, the board determined against it.
'hlatherv i W A WoodVillef w Scale, 1:2,200,000 English Miles 20 30 40 Longitude Nest gi of Greenwich z fishery on the reefs in the Sound, much developed since 1880.
Although observations on marine currents were made near land or between islands even in antiquity, accurate observations on the high seas have only been possible since chronometers furnished a practicable method of determining longitude, i.e.