For two anxious months we laboured at very high pressure; and after measuring our base-line and connecting our triangulation with that west of the river, we worked over five hundred square miles in detail.
It is based on a triangulation with three carefully measured bases.
Finally, I had just terminated, under very difficult circumstances, the grandest triangulation which had ever been achieved, to prolong the meridian line from France as far as the island of Formentera.
Forrester thought of Humphrey and his triangulation theory.
Forrester was not much impressed with Humphrey's triangulation theory.
As a civil engineer I have used triangulation in my surveying work on many occasions, but how I can apply it to a criminal problem is beyond me.
I am not an engineer myself, and what I know about surveying and triangulation could be put into a thimble, but I think I know enough to give you an idea of what I mean.
In 1913 the United States Geological Survey, in connection with its topographic surveys of the Mount Rainier National Park, was able to make a new series of measurements by triangulation methods at close range.
The Italian triangulation is now complete, and has been joined with the neighbouring countries on the north, and with Tunis on the south.
The triangulation depends upon ten base-lines, with an aggregate length of 86 km.
The Transcontinental Triangulation and the American Arc of the Parallel, by C.
English survey, he carried histriangulation as far north as 20 deg.
In the main, the triangulation follows the Appalachian chain of mountains, bifurcating once, so as to leave an oval space between the two branches.
The United States Coast and Geodetic Survey has published an account of the transcontinental triangulation and measurement of an arc of the parallel of 39 deg.
Cassini, starting from Picard's base, carried a triangulation northwards from Paris to Dunkirk and southwards from Paris to Collioure.
All geometrical conditions subsisting in the triangulation are satisfied by adjustment, inclusive of the required accord of the base-lines, so that the same length for any given line is found, no matter from what line one may start.
Account of the observations and calculations of the principal triangulation and of the figure, dimensions and mean specific gravity of the earth as derived therefrom.
The records preserved in each city were examined, topographical information was diligently collected, and the Jesuit fathers checked their triangulation by meridian altitudes of the sun and pole star and by a system of remeasurements.
The triangulation is then supposed to be projected on a spheroid of given elements, representing as nearly as one knows the real figure of the earth.
The principal triangulation of Great Britain and Ireland has seven base lines: five have been measured by steel chains, and two, more exactly, by the compensation bars of General T.
The more ordinary method oftriangulation is, however, that of chains of triangles, in the direction of the meridian and perpendicular thereto.
In the Account of the Principal Triangulation of Great Britain and Ireland will be found the determination, from 75 equations, of the spheroid best representing the surface of the British Isles.
When the angles of a triangulation have been adjusted by the method of least squares, and the sides are calculated, the next process is to calculate the latitudes and longitudes of all the stations starting from one given point.
Supposing the latitudes of a number of stations in the triangulation to be observed, practically the mean of these determines the position in latitude of the network, taken as a whole.
The triangulation points may either be natural objects presenting themselves in suitable positions, such as church towers; or they may be objects specially constructed in stone or wood on mountain tops or other prominent ground.
In 1898 George Eldridge and Robert Muldrow, of the United States Geological Survey, traversed the region, and Muldrow estimated the height of the mountain by triangulation at twenty thousand three hundred feet.
Be able to judge of spaces between distant objects such as the distance between two trees, the width of a road, or a brook, by the triangulation method.
In India geodetic triangulation furnishes the basis for exact surveys as far east as the eastern boundaries of Burma in longitude about 100 deg.
But beyond the eastern shores of the Caspian no system of direct geodetic measurements by first-class triangulation has been possible, and the surveys of Asiatic Russia are separated from those of Europe by the width of that inland sea.
The astronomical observatory at Tashkent is adopted for the initial starting-point of the trans-Caspian triangulation of Russia; the triangulation ranks as second-class only, and now extends to the Pamir frontier beyond Osh.
In connexion with the Indian triangulation minor extensions carried out on systems involving more or less irregularity have been pushed outwards on all sides.
The close of the 19th century witnessed the forging of the final links in the great geodetic triangulation of India, so far as the peninsula is concerned.
In one case only the distance between two stations had to be determined by graphic triangulation exclusively, the base signals having been destroyed.
The method of survey planned was a combination of graphic triangulation and traverse with the micro-meteralidade.
Otherwise graphictriangulation was used as a check on distances.
Principal topographical points were located by from two to four intersections from the triangulation and plane-table stations; and elevations were determined by vertical angle measurements.
A triangulation was carried across the river with a measured base on each side.
Hauser and Stickney made the descent at a point where the river was 1,050 feet below the edge of the cañon, as determined by triangulation by Mr. Hauser.
Our method of triangulation was as follows: A point on the surface of the ground was marked, which was in a direct line with a branch of a tree near by, and of the top of the column of water when at its greatest height.
Whilst the ship underwent these repairs, the triangulation was extended to Launceston,* at the head of the Tamar, thirty miles from the sea.
Moral Triangulation of the Third Party,' in obligations and contrasts.
Second, a triangulation corps engaged in extending a system of triangulation over various portions of the country from measured base-lines.
The geographic basis of this map is a trigonometric survey by which datum points are established throughout the country; that is, base-lines are measured and a triangulation extended therefrom.
The primary triangulation having been made, the topography is executed by a variety of methods, adapted to the peculiar conditions found in various portions of the country.
An examination of the map will show that the triangulation of the various organizations is already largely in advance of the topography.
It can be done on sea, as well as on land, but we had better go and make the first measurement by triangulation correctly, and do this in our subsequent measurements, unless it should be necessary to make the measurements at sea.
A similar instrument is the heliotrope, used principally for defining distant points in geodetic surveys, such as in the triangulation of India, and in the verification of the African arc of the meridian.
Primary triangulation would be useful to men of almost every trade and profession in which tools or instruments are used.
From the great Indus series of triangles bases have been selected at intervals which have supported minor chains of triangulation reaching into the heart of the country.
These again have been connected by links of more or less regularity, so that, if the Baluchistan triangulation lacks the rigid accuracy of a "first [v.
