A Manual of Scientific Enquiry: Prepared for the Use of Officers in Her Majesty's Navy; and Travellers in GeneralJ. Murray, 1851 - 503 Seiten |
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Seite 3
... side of this should be placed the error of the chronometer or hack - watch on Greenwich time , or on time at the ship ( as may be most conve- nient ) ; and , after this , the corrected time . At some convenient place , either at the ...
... side of this should be placed the error of the chronometer or hack - watch on Greenwich time , or on time at the ship ( as may be most conve- nient ) ; and , after this , the corrected time . At some convenient place , either at the ...
Seite 15
... side of its position of rest , the square of the number of vibrations in a given time is a measure of the horizontal component of the magnetic force of the Earth , but is also dependent on the individual properties of the magnet ...
... side of its position of rest , the square of the number of vibrations in a given time is a measure of the horizontal component of the magnetic force of the Earth , but is also dependent on the individual properties of the magnet ...
Seite 20
... side of the position of rest . The apparatus when used at sea is placed on a gimball table , by which the motion of the vessel is greatly counteracted ; and when the weather does not permit the manipulation of the weights , deflecting ...
... side of the position of rest . The apparatus when used at sea is placed on a gimball table , by which the motion of the vessel is greatly counteracted ; and when the weather does not permit the manipulation of the weights , deflecting ...
Seite 28
... side , and the longitude along the top of the page , and the values of the magnetic elements corresponding to the several latitudes and longitudes are placed at the points of intersection . By proper care in the process , the step of ...
... side , and the longitude along the top of the page , and the values of the magnetic elements corresponding to the several latitudes and longitudes are placed at the points of intersection . By proper care in the process , the step of ...
Seite 36
... side , furnished with a tube for the suspension of the 3.67 inch ( or deflecting ) magnet . The table must be levelled by means of the foot - screws , and turned in azimuth until the mirror attached to the stirrup in which the magnet is ...
... side , furnished with a tube for the suspension of the 3.67 inch ( or deflecting ) magnet . The table must be levelled by means of the foot - screws , and turned in azimuth until the mirror attached to the stirrup in which the magnet is ...
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A Manual of Scientific Enquiry: Prepared for the Use of Her Majesty's Navy ... John Frederick William Herschel Eingeschränkte Leseprobe - 2011 |
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actinometer afford algæ altitude angles animals ascer ascertained atmospheric waves Auriga barometer Cape Horn carefully centre character coast collected colour column corals correct crystals deflection deflector depth desirable determined direction distance earth Engl especially Fcap fissures fossil geology head height high water horizontal igneous rocks important inches inclination inquiry instrument islands kind known land latitude longitude low water lunitidal interval means measure mercury meridian minerals minute mode moon's transit nature navigation needle North noted objects observations obtained occur ocean particular phenomena plants Plates port portion Portrait position Post 8vo preserved quadrupeds racter reefs remarks rivers rocks Second Edition sextant shells ship shore skin sound specific gravity specimens stream substances surface taken temperature thermometer Third Edition three-hourly tide tide-wave tion tribe tube vertical vessels vibration Vols voyage WASHINGTON IRVING wave wind Woodcuts
Beliebte Passagen
Seite 20 - MAWE'S (HL) Journal of a Passage from the Pacific to the Atlantic, crossing the Andes in the Northern Provinces of Peru, and descending the great River Maranon.
Seite 22 - NEALE'S (EV) Feasts and Fasts: an Essay on the Rise, Progress, and Present State of the Laws relating to Sundays and other Holidays, &c. Fcap.
Seite v - It is the opinion of the Lords Commissioners of the Admiralty, that it would be to the honour and advantage of the Navy, and conduce to the general interests of science, if new facilities and encouragement were given to the collection of information upon scientific subjects by the officers, and more particularly by the medical officers, of Her Majesty's Navy, when upon foreign service...
Seite 26 - LEXINGTON (THE) PAPERS ; or, Some Account of the Courts of London and Vienna at the end of the 17th Century. Extracted from the Official and Private Correspondence of ROBERT SUTTON (LORD LEXINGTON) while Minister at Vienna.
Seite 4 - JOHN) Autobiographical Memoir, including Reflections, Observations, and Reminiscences at Home and Abroad* From Early Life to Advanced Age. Portrait. 8vo. 16».
Seite 283 - It happens fortunately that almost every datum which the scientific meteorologist can require is furnished in its best and most available state by that definite, systematic process known as the " keeping a meteorological register" which consists in noting at stated hours of every day the readings of all the meteorological instruments at command, as well as all such facts or indications of wind and weather as are susceptible of being definitely described and estimated without instrumental aid. Occasional...
Seite 19 - Spain under Charles the Second; or, Extracts from the Correspondence of the Hon. ALEXANDER STANHOPE, British Minister at Madrid from 1690 to 1700. Second Edition. Post 8vo. 6s. 6d. Life of Louis Prince of Condg, surnamed the Great. Post 8vo. 6s. Life of Belisarius. Second Edition. Post 8vo. 10s. 6d. Historical and Critical Essays. Post 8vo. 6».
Seite 122 - Mistakes and errors have often been produced in tide observations by supposing that the turn of the tide stream is the time of high water. But this is not so. The turn of the stream generally takes place at a different time from high water, except at the head of a bay or creek. The stream of flood commonly runs for some time, often for hours, after the time of high water. In the same way, the stream of ebb runs for some time after low water.
Seite 291 - ... no risk of change. The next correction, and the most important of all, is that due to the temperature of the Mercury in the Barometer tube at the time of observation. To obtain this, every Barometer requires to have attached to...
Seite 4 - Voyages of Discovery and Research within the Arctic Regions, from 1818 to the present time. Under the Command of the several Naval Officers, employed by Sea and Land, in search of a North-west Passage from the Atlantic to the Pacific : with Two Attempts to reach the North Pole. Abridged and arranged from the Official Narratives, with Occasional Remarks.