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: Containing the Different Kinds of Sailing, and Necessary Corrections for Lee-way, Variation, &c. Exemplified in a Journal at Sea ... The Whole Illustrated with Engravings ...J. Johnson, 1807 - 328 sider |
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Side v
... must be to Learners cannot be doubted , when we reflect , that by being thus acquainted with the true principles of things , they will retain better what they have learned , and be enabled to make much greater progress in the art , than ...
... must be to Learners cannot be doubted , when we reflect , that by being thus acquainted with the true principles of things , they will retain better what they have learned , and be enabled to make much greater progress in the art , than ...
Side xv
... must be annexed to the Dividend as will make them equal , and the quotient will be a whole number . 3d . But when the divifion is done , if the quotient has not fo many figures as it should have places of Decimals , then fo many cyphers ...
... must be annexed to the Dividend as will make them equal , and the quotient will be a whole number . 3d . But when the divifion is done , if the quotient has not fo many figures as it should have places of Decimals , then fo many cyphers ...
Side 4
... must be added to those that go before it , thus 9 + 8 , that is 9 added to 8. Or , A + B im- plies that the quantities reprefented by A and B are added . Signifies lefs , and is ufed as the Sign of Subtraction ; it denotes that the ...
... must be added to those that go before it , thus 9 + 8 , that is 9 added to 8. Or , A + B im- plies that the quantities reprefented by A and B are added . Signifies lefs , and is ufed as the Sign of Subtraction ; it denotes that the ...
Side 17
... must be reduced into decimals , which is easily done by ex- tending the compaffes from the denominator to the numerator ; that extent laid upon I in the middle will reach to the decimal required . Example . Required the decimal fraction ...
... must be reduced into decimals , which is easily done by ex- tending the compaffes from the denominator to the numerator ; that extent laid upon I in the middle will reach to the decimal required . Example . Required the decimal fraction ...
Side 7
... must be used with the sector quite open , the use of which is explained in the description of the Gunter fcale . On one face are two lines of chords to 60 degrees , marked Cho . or C. two fcales of equal parts to 10 , marked Lin . or L ...
... must be used with the sector quite open , the use of which is explained in the description of the Gunter fcale . On one face are two lines of chords to 60 degrees , marked Cho . or C. two fcales of equal parts to 10 , marked Lin . or L ...
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The New Practical Navigator: Being a Complete Epitome of Navigation: To ... John Hamilton Moore Ingen forhåndsvisning tilgjengelig - 2015 |
The New Practical Navigator: Being a Complete Epitome of Navigation: To ... John Hamilton Moore Ingen forhåndsvisning tilgjengelig - 2015 |
Vanlige uttrykk og setninger
againſt alfo anchor Anfwer angle apparent altitude arch bafe baſe bearing cable cafe centre chord Co-fecant Co-fine Co-tang coaft column compaffes courfe courſe declination defcribe degrees departure diff difference of latitude difference of longitude Dift Dep Dift Lat diftance divifion draw eaft Epact equal extent will reach faid fails fame fathoms fcale fecond fhews fhip fhip's fhore fhould fide firft firſt fituation fome fouth fquare ftands ftar ftar's ftation fteer fubtract fuch fun's Funchal furface given Greenwich haul hypothenufe interfections laft lefs line of numbers logarithm maft meaſured meridian meridian altitude miles moon moon's muſt neareſt noon obferved oppofite parallax parallel perpendicular Plane Sailing quadrant radius reprefent right afcenfion right line rope Sailing Secant ſhip Sine ſtar Suppofe Tangent thefe theſe thofe thoſe triangle true uſed weft wind yards
Populære avsnitt
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 34 - Horizon decreafes ; confequently, the latitude of a place is always equal to the elevation of the pole above the Horizon.
Side 17 - ... degrees of the quadrant, begins at the right hand against 90° on the sines, and from thence is numbered towards the left hand thus : 10, 20...
Side 10 - C, it will become a line of versed sines, which may be continued to 180°, if the same divisions be transferred on the same 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 272 - ... home, when the rammer is to be drawn, and not before. While this is doing, the man appointed to...
Side xvi - The radius of a circle is half the diameter, or it is a right line drawn from the centre to the circumference, as CD.
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 87 - ... degrees, &c. and draw lines through every 5 degrees of latitude and longitude, as in the chart. Take from the Table of Latitude and Longitude of Places, the latitude and longitude of each particular place contained within the bounds of the chart, and lay a...
Side 17 - ... 1, 2, 3, &.C. to 10, and so on 20, 30, 40, and 45, where is a brass pin under 90° on the sines ; from thence it is numbered backwards, 50, 60, 70, 80, &.C. to 89, ending at the left hand where it began at 1 degree. The subdivisions are nearly similar to those of the sines. When you have any extent in your compasses, to be set off from any number less than 45°...
Side 21 - ... the logarithm of the firft term, the remainder will be the logarithm of the fourth term. Or to the complement arithmetic of the logarithm of the firft term, add the logarithms of the fécond and third term, the fum abating radius will give the fame anfwer. As log. .. 60 .... 1.77815 Coar.