A Manual of Scientific Enquiry: Prepared for the Use of Officers in Her Majesty's Navy; and Travellers in GeneralJohn Frederick William Herschel, Robert Main |
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Page vi
... spherical or physical astronomy . 2nd . Those which relate to phenomena occurring on the surface of the earth , or in its atmosphere . 3rd . Those which relate to the political and physical geography of the vi PREFACE TO THE THIRD EDITION .
... spherical or physical astronomy . 2nd . Those which relate to phenomena occurring on the surface of the earth , or in its atmosphere . 3rd . Those which relate to the political and physical geography of the vi PREFACE TO THE THIRD EDITION .
Page xi
... surface - drift , 21- Approaching a coast , 25 Observations in port , 30 Survey of a port , 31 Sailing directions , 36 Tide pole , 36— Soundings , 37- The Bore , 39- Freshes , 40 — Dis- covery of land , 40- Sailing along a coast , 41 ...
... surface - drift , 21- Approaching a coast , 25 Observations in port , 30 Survey of a port , 31 Sailing directions , 36 Tide pole , 36— Soundings , 37- The Bore , 39- Freshes , 40 — Dis- covery of land , 40- Sailing along a coast , 41 ...
Page 15
... surface of the ocean are the principal causes of the many currents which sweep over the face of the earth . The effect of these upon a vessel passing to and fro is one of the most useful inquiries a seaman can make ; and as both ( wind ...
... surface of the ocean are the principal causes of the many currents which sweep over the face of the earth . The effect of these upon a vessel passing to and fro is one of the most useful inquiries a seaman can make ; and as both ( wind ...
Page 16
... surface of the sea , for it has been by such observations that we have been able to trace , with a certainty amounting almost to proof , the continuous course of the same body of water for thousands of miles over the troubled surface of ...
... surface of the sea , for it has been by such observations that we have been able to trace , with a certainty amounting almost to proof , the continuous course of the same body of water for thousands of miles over the troubled surface of ...
Page 17
... surface of the sea from every ship in active service , we should be able in a short time to construct tables showing the normal temperature of the surface of the ocean for every 5 ° of latitude for every month in the year , and a ...
... surface of the sea from every ship in active service , we should be able in a short time to construct tables showing the normal temperature of the surface of the ocean for every 5 ° of latitude for every month in the year , and a ...
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A Manual of Scientific Enquiry: Prepared for the Use of Officers in Her ... John Frederick William Herschel No preview available - 2017 |
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actinometer afford altitude angles animals ascer ascertained atmospheric wave azimuth barometer Cape Horn carefully centre character chronometer circle coast colour column coral correct currents deflection deflector depth desirable determined dipping needle direction distance earth earth-wave earthquake Edition especially Fcap fissures fossil geographical geology height high water horizontal igneous rocks important inches inclination inquiry instrument islands known land latitude longitude lunitidal interval magnetic force magnetic moment maps means measure mercury meridian Mineralogy minerals minute moon's transit nature navigation needle noted objects observations obtained occur ocean origin phenomena port portion position possible Post 8vo preserved quadrupeds racter reefs remarks rivers rocks scale seismometer sextant shells ship shock shore skin specimens stations strata stream surface taken temperature thermometer tide tide-wave tion tribe tube vernier vertical vessel vibration Vols voyage wind Woodcuts zodiacal light
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Page iii - 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...
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Page 93 - ... and if the amount is large, the heeling error is corrected by the application of a vertical magnet. The whole process is described, and all the mathematical formula and arithmetical processes, and a number of convenient graphic methods, are given in the "Admiralty Manual for ascertaining and applying the Deviations of the Compass caused by the Iron of a Ship.
Page 76 - 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.