Epitome of the Art of Navigation: Or, A Short, Easy and Methodical Way to Become a Compleat Navigator ... |
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Page 15
... counted in Degrees , which are greater or lefs in Proportion to the Radius of the Circle . 3. Radius of a Circle is half its Diameter , or any Right - line drawn from the Center to the Periphery , as AB . 4. A Chord - line is drawn from ...
... counted in Degrees , which are greater or lefs in Proportion to the Radius of the Circle . 3. Radius of a Circle is half its Diameter , or any Right - line drawn from the Center to the Periphery , as AB . 4. A Chord - line is drawn from ...
Page 33
... counted for a Tun : And , 43 .. Then will the forefaid Bale contain Tun 1.556 Parts . For , The Rule is , As 4c .. Area Bafe : Length Tuns req . As 40 Area Bafe 10.92 : Length 5.7.Tun 1.556 Parts . So much for Geometry ; Trigonometry is ...
... counted for a Tun : And , 43 .. Then will the forefaid Bale contain Tun 1.556 Parts . For , The Rule is , As 4c .. Area Bafe : Length Tuns req . As 40 Area Bafe 10.92 : Length 5.7.Tun 1.556 Parts . So much for Geometry ; Trigonometry is ...
Page 53
... counted the Degrees of Latitude . 5. Parallels of Latitude , are Lines parallel to the Equator , and lie Eaft and Weft . 6. Latitude is.the Breadth , or Distance of any Parallel of La titude from the Equator ; from whence ' tis counted ...
... counted the Degrees of Latitude . 5. Parallels of Latitude , are Lines parallel to the Equator , and lie Eaft and Weft . 6. Latitude is.the Breadth , or Distance of any Parallel of La titude from the Equator ; from whence ' tis counted ...
Page 55
... counted from ; and then the nearest Distance from that , to any Meridian , must be kept in one Pair of Compaffes . 2. With another Pair of Compaffes , take the nearest Distance of the Latitude , from any Parallel , or Eaft and Weft Line ...
... counted from ; and then the nearest Distance from that , to any Meridian , must be kept in one Pair of Compaffes . 2. With another Pair of Compaffes , take the nearest Distance of the Latitude , from any Parallel , or Eaft and Weft Line ...
Page 57
... counted to a Degree on the Me- ridian , or any great Circle . 2. General Rule . To find the Difference of Latitude , when the Latitudes of two Places are given . or both The La- ( both North the other titudes one } the Difference of ...
... counted to a Degree on the Me- ridian , or any great Circle . 2. General Rule . To find the Difference of Latitude , when the Latitudes of two Places are given . or both The La- ( both North the other titudes one } the Difference of ...
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Epitome of the Art of Navigation: Or, a Short, Easy and Methodical Way to ... James Atkinson,William Mountaine No preview available - 2018 |
Common terms and phrases
adjacent Angle alfo Anfw Angle ACB Angle BAC Angle oppofite Axiom Barbadoes Cafe Center Column Compafs Courfe Courſe defcribed Departure Diameter Diff Difference of Latitude Difference of Longitude Diſtance Dominical Letter draw Eaft Eafterly Ecliptic Epact equal Equator Equinoctial Example faid fame fecond Feet fhew fheweth firft firſt fubtract Globe greateſt half hath Horizon Hour Hypothenufe AC Inches Leag Leagues lefs Leg BC Line Lizard Logarithm meaſured Merid Meridian Altitude Minutes Sine neareſt North Number Obfervation Oblique Circle Oblique Triangle Parallel perpendicular Plane Plate Points Pole Primitive Circle Prob Proportion Radius Remainder reprefented Right Afcenfion Right Circle Rule Rumb Ship fails Ship's Side AC Side CD Sine Complement Sine Tangent Secant Solid Content South Latitude Spheric Geometry Spheric Triangle Spheric Trigonometry Star's Sun's Altitude Sun's Azimuth Sun's Declination Sun's Place thefe theſe Trigono tude Weft Wefterly whofe
Popular passages
Page 123 - We infer from this that a triangle can be constructed with three given lines as sides, when the sum of any two sides is greater than the third side.
Page 47 - BD, is to their Difference ; fo is the Tangent of half the Sum of the Angles BDC and BCD, to the Tangent of half their Difference.
Page 159 - AZIMCTR circles, called azimuths, or vertical circles, are great circles of the sphere, intersecting each other in the zenith and nadir, and cutting the horizon at right angles in all the points thereof.
Page 149 - ... globe. A Strait is a narrow part of the ocean lying between two shores, and opening a way into some sea, as the Straits of Gibraltar that lead into the Mediterranean Sea. A Creek is a small narrow part of the sea or river, that goes up but a little way into the land.
Page 138 - ... the angle CGH (1. PI. Tr.): But since CG, HG are at right angles to DGB, which is the common section of the planes CBD, ABD, the angle CGH will be equal to the inclination of these planes (6.
Page 107 - Difference of Latitude, is to the Difference of Longitude ; fo is the Sine Complement of the Middle Latitude, to the Tangent of the Courfe, or more briefly thus : As Diff.
Page 216 - ... as the radius is to the tangent of the latitude ; so is the tangent of the sun's declination to the sine of the ascensional difference sought. This, converted into time, shows how much he rises...
Page ii - Navigatio Britannica: or, a complete System of Navigation, in all its Branches, both with regard to theory and practice; containing Geometry, Plane and Spherical Trigonometry, Astronomy, and the doctrine of the Sphere, &c.
Page 137 - Is to the cosine of half their difference, So is the cotangent of half the contained angle To the tangent of half the sum of the other angle*.
Page 207 - OH the globe by the divisions on the quadrant of altitude, in its motion about the body of the globe, when screwed to the zenith. PARALLELS of declination, in astronomy, are the same with parallels of latitude, in geography. PARALLEL sphere...