The New Practical Navigator: Being a Complete Epitome of Navigation to which are Added All the Tables Requisite for Determining the Latitude and Longitude at Sea ...J. Johnson, 1807 - 328 sider |
Inni boken
Resultat 1-5 av 7
Side 43
... surface of the fea , quite round the Terraqueous Globe , and that , ( as to fenfe ) there is no fuch thing as an upper or lower part of the Earth ; for let the inhabitant be in what part foever , he will there gravitate to- wards the ...
... surface of the fea , quite round the Terraqueous Globe , and that , ( as to fenfe ) there is no fuch thing as an upper or lower part of the Earth ; for let the inhabitant be in what part foever , he will there gravitate to- wards the ...
Side 45
... surface defcribing a circle of 360 degrees in that time ; therefore , any place lying 15 degrees to the eaft of us , has the Sun upon its me- ridian one hour fooner ; or it is twelve o'clock with the eastern- most , when it is eleven ...
... surface defcribing a circle of 360 degrees in that time ; therefore , any place lying 15 degrees to the eaft of us , has the Sun upon its me- ridian one hour fooner ; or it is twelve o'clock with the eastern- most , when it is eleven ...
Side 87
... surface of a globe to a plane ; which Mr. WRIGHT , an Englishman , by an ingenious conception , happily accomplished . He conceived the furface of this globe to fwell like a bladder while it is blowing up from the equator towards the ...
... surface of a globe to a plane ; which Mr. WRIGHT , an Englishman , by an ingenious conception , happily accomplished . He conceived the furface of this globe to fwell like a bladder while it is blowing up from the equator towards the ...
Side 211
... surface of the fea , and the latitude be required ? By the Nautical Almanack , Jupiter paffes the meridian of Greenwich that day at 5 h . 14 m . afternoon ; and I h . the longi- tude in time added to it , gives 6 h . 14 m . the time of ...
... surface of the fea , and the latitude be required ? By the Nautical Almanack , Jupiter paffes the meridian of Greenwich that day at 5 h . 14 m . afternoon ; and I h . the longi- tude in time added to it , gives 6 h . 14 m . the time of ...
Side 214
... surface of which is reprefented the concavity of the heavens ; that is to say , a right line being drawn from the eye of the spectator , placed at its centre through any ftar thereon reprefented , will point to the fame ftar in the ...
... surface of which is reprefented the concavity of the heavens ; that is to say , a right line being drawn from the eye of the spectator , placed at its centre through any ftar thereon reprefented , will point to the fame ftar in the ...
Innhold
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Vanlige uttrykk og setninger
againſt alfo anchor Anfwer angle apparent altitude arch bafe bearing becauſe cable cafe centre Co-fecant co-fine Co-tang coaft column compafs confequently correfponding courfe courſe declination defcribe degrees departure difference of latitude difference of longitude Dift Dep Dift Lat diftance divifion draw eaft Epact equator EXAMPLE faid fame fathoms fecant fecond fextant fhews fhip fhip's fhore fhould fide find the Diff firft fituation fome fouth ftands ftar fteer fubtract fuch fun's Funchal furface glafs Greenwich haul horizon interfections laft lefs line of numbers logarithm maft meaſured Mercator's Sailing meridian meridian altitude Middle Latitude miles moon moon's muſt neareſt noon obfervation oppofite parallax parallel perpendicular Plane Sailing quadrant radius reprefent right line rope ſhip Sine Suppofe Table Tangent thefe theſe thip thofe thoſe true ufed uſed weft wind yards zenith
Populære avsnitt
Side 2 - The circumference of every circle is supposed to be divided into 360 equal parts, called degrees ; and each degree into 60 equal parts, called minutes ; and each minute into 60 equal parts, called seconds ; and these into thirds, &c.
Side 16 - EXAMPLE. If the diameter of a circle be 7 inches, and the circumference 22, what is the circumference of another circle, the diameter of which is 14 inches ? Extend from 7 to 22, that extent will reach from 14 to 44 the same way.
Side 1 - ... are supposed to be divided into 360 equal parts, called degrees (marked ° ;) each degree into 60 minutes (marked ' ;) each minute into 60 seconds (marked ".) Hence a semicircle contains 180 degrees, and a quadrant 90 degrees. An Angle is the meeting of two lines in a point, as A (plate 1, fig. 2.) The point where they meet is called the angular point, and the lines AB and AC, are called sides or legs. A Right Angle is that which is made by one line perpendicular to another, or, when the angles...
Side 316 - ... home, when the rammer is to be drawn, and not before. While this is doing, the man appointed to...
Side 72 - SSE 32 miles— SSE I E. 27 miles— S. by E. 25 miles— S. 31 miles, and SSE 39 miles. Required the latitude the ship is in, and her departure from the meridian, with the course and distance to her intended port ? TRAVERSE TABLE.
Side 31 - ... SH is the complement of the arch AS ; SZ is the sine of the arch SH, or the co-sine of the arch AS. XXI. The VERSED SINE of an arch is that part of the diameter contained be*tween the sine and the arch ; thus RA is the versed sine of the arch AS, and DCR is the versed sine of the arch DHS.
Side 12 - ... line on the other side of the centre C. 6thly. From the centre C, through the several divisions of the quadrant BD, draw right lines till they cut the tangent ВТ; so will the line ВТ become a line of tangents.
Side 114 - ... These trade winds, on the American side, extend to 30, 31, or even 32 degrees of N. latitude, which is about 4 degrees farther than they extend on the African side. To the southward of the equator, the trade winds extend three or four degrees farther towards the coast of Brazil, on the American side, than they do near the Cape of Good Hope, on the African side. Between the latitude of 4 degrees N. and 4 degrees S., the wind always blows between the south and east ; on the African side the winds...
Side 16 - The solid content of any bale, box, chest, fcc. is found by extending from 1 to the breadth ; that extent will reach from the depth to a fourth number, and the extent from 1 to that fourth number will reach from the length to the solid content. EXAMPLE 1st.
Side 117 - These contrary winds do not shift from one point to its opposite all at once ; in some places the time of the change is attended with calms, in others by variable winds ; and it often happens on the...