An Elementary Treatise on Phototopographic Methods and Instruments: Including a Concise Review of Executed Phototopographic Surveys and of Publicatins on this SubjectJ. Wiley & sons, 1906 - 438 pagina's |
Inhoudsopgave
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Overige edities - Alles bekijken
An Elementary Treatise on Phototopographic Methods and Instruments ... John Adolphus Flemer Volledige weergave - 1906 |
An Elementary Treatise on Phototopographic Methods and Instruments ... John Adolphus Flemer Volledige weergave - 1906 |
An Elementary Treatise on Phototopographic Methods and Instruments ... John Adolphus Flemer Geen voorbeeld beschikbaar - 2018 |
Veelvoorkomende woorden en zinsdelen
a₁ abscissæ adjusted alidade azimuth base line bisected camera stations camera-box camera-lens Capt chromatic aberration coincide constant focal length construction corresponding diaphragm distance drawn exposure eyepiece fiducial edge field film frame fuer geodetic glass graduation grammes graphic ground plane horizon line horizontal angles horizontal circle horizontal projection hypsometer iconometric plotting image plane index mark instrument kernel points Laussedat lens lenses light-rays lines of direction locate means measured metal negative nodal point object observed obtained optical axis Paganini's parallax parallel perpendicular Photogrammetrie photographic perspective photographic plate photographic surveying phototheodolite phototopographic phototopographic methods picture plane picture trace pictured points plane table plate-holder plotted position plotting-sheet principal line principal point Prof Punta radials refractive represent revolved Ruja ruler S₁ scale screw second nodal solution stereoscopic surface telescope terrene terrene points theodolite tion triangulation points tripod Ueber vernier vertical angles vertical plane Zeiss
Populaire passages
Pagina 345 - The mounts were made in 66 per cent glycerine to which a few drops of a 10 per cent solution of acetic acid had been added.
Pagina 304 - Difference required to produce electrical discharges iti gases at low pressure, an extension of Paschen's Law. Transactions of the Royal Society of Canada, Second Series, 1902-1903. Vol. VIII., section III., pp. 161-182. 1902. On the Laws governing electric discharges in gases at low pressures. Philosophical Transactions of the Royal Society of London. Series A., vol. 201, pp. 403-433. EMMA SOPHIA BAKER. 1903. Experiments on the Esthetic of Light and Colour. University of Toronto Studies, Psychological...
Pagina 384 - ... or two hours at the longest, and as three well-placed stations will control the horizontal and vertical representation of an extended area, a large territory may be reconnoitered phototopographically in a comparatively short time.
Pagina 33 - Photographic Surveying, including the Elements of Descriptive Geometry and Perspective.
Pagina 3 - ... practically useful and valuable results. Minute and detailed methods, with ensuing accurate results, should be applied to cities and all closely settled regions, to the coast, larger rivers, and lakes, and the work should be platted on a large scale. Arid, barren, and mountainous regions, as well as prairies and swamp lands, should be more generalized in their cartographic representations, and platted on a small scale.
Pagina 304 - A. Laussedat, Recherches sur les instruments, les methodes et le dessin topographiques, tome 2, presented by the author.
Pagina 356 - If the plate shows a tendency to fog add from 10 to 20 drops of a 10 per cent solution of bromide of potassium to the developer.
Pagina 118 - B and b are brother and sister, and so are C and c. A marries b and makes a marriage payment which is used to obtain a wife (c) for B. In various tribes the marriage payment establishes a series of special personal relations between b and B, between A and B, between b and c, and between A and c. These are defined differently in different tribes, we may briefly consider three varieties. It is usual to speak of B and b as 'linked' brother and sister, and B is the 'linked' mother's brother of the children...
Pagina 384 - ... an angle and distance. (e) Great economy in the field work will result if the progress is regulated by the weather and climatic conditions. As a rule, the highest and least accessible stations should be occupied during spells of good weather. Also, the best results in mountainous country are to be obtained when the plates are exposed in the latter part of the forenoon. (3) Photography, (a) A knowledge of landscape photography is a very great asset, and it is desirable that the surveyor should...
Pagina 184 - ... held in position by two bolts DD. The plate holder is made for single plates ; it is inserted in a carrier EE, which can be moved forwards and backwards by means of the screw G. A folding shade HH hooked in front of the camera, and diaphragms KK inside of the metal box, intercept all light which does not contribute to the formation of the image on the photographic plate. The camera rests on a triangular base with foot screws, identical with the base of the transit, so that both may fit on the...