A treatise on navigation, and nautical astronomyBaldwin, Cradock, and Joy, 1824 - 551 sider |
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Side vii
... Meridian and Double Alti- tudes , & c . ..... 225 Practical Methods of finding the Variation of the Compass by Observation .... 234 Practical Methods of finding the Time , the Errors and Rates of Chronometers , and the Longitude by ...
... Meridian and Double Alti- tudes , & c . ..... 225 Practical Methods of finding the Variation of the Compass by Observation .... 234 Practical Methods of finding the Time , the Errors and Rates of Chronometers , and the Longitude by ...
Side viii
... meridian read meridians ... for 46 read 146 . for E read F. for observed altitude read observed azimuth . Example 1 , for 19 44 09 read 19 44 17 . for losing read gaining . Example No. 1 , t , for 9m 52s , and 9m 56s , read 8m 27s , and ...
... meridian read meridians ... for 46 read 146 . for E read F. for observed altitude read observed azimuth . Example 1 , for 19 44 09 read 19 44 17 . for losing read gaining . Example No. 1 , t , for 9m 52s , and 9m 56s , read 8m 27s , and ...
Side 105
... meridian from the equator , according to Mercator's projection of the globe , in which projection the meridians are all parallel lines . The line below it , marked E. parts , or equal parts , shews the parts of the meridian , whose ...
... meridian from the equator , according to Mercator's projection of the globe , in which projection the meridians are all parallel lines . The line below it , marked E. parts , or equal parts , shews the parts of the meridian , whose ...
Side 147
... meridian passing over any place is called the meridian of that place ; and the portion of a meridian intercepted between a place and the equator , is called the latitude of that place ; and it receives the denomination of north or south ...
... meridian passing over any place is called the meridian of that place ; and the portion of a meridian intercepted between a place and the equator , is called the latitude of that place ; and it receives the denomination of north or south ...
Side 148
... meridian distances , computed on the supposition that the distance is divided into indefinitely small equal parts . The parallel of latitude , which is 23 ° 28 ′ north of the equator , is called the tropic of cancer ; and that which is ...
... meridian distances , computed on the supposition that the distance is divided into indefinitely small equal parts . The parallel of latitude , which is 23 ° 28 ′ north of the equator , is called the tropic of cancer ; and that which is ...
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A Treatise on Navigation and Nautical Astronomy ... Fourth edition, etc Edward Riddle Uten tilgangsbegrensning - 1842 |
Vanlige uttrykk og setninger
angled spherical triangle Answer apparent altitude Atlantic Ocean bisected Cape celestial object centre chronometer circle column compass computed correction Cosec Cosine Cotang course and distance declination diff lat diff long Difference of Latitude difference of longitude Dist equal equator EXAMPLES FOR EXERCISE Given A B greater Greenwich Hence horizontal parallax Indian Archipelago Indian Ocean Island Latitude and Departure latitude and longitude logarithm longitude Lunar Distance meridian distance miles moon moon's Nautical Almanac noon observed opposite Pacific Ocean parallax parallel parallel sailing parallelogram perpendicular plane sailing polar distance pole quadrant radius rectangle rhumb line right angled spherical right ascension Secant semidiameter sides squares of A C subtract Suvers Suversed Sines Table Tang tangent Theo THEOREM triangle A B C true altitude true distance Vers
Populære avsnitt
Side 18 - LET it be granted that a straight line may be drawn from any one point to any other point.
Side 17 - When equals are taken from unequals, the remainders are unequal. 6. Things which are double of the same thing, or equal things, are equal to each other.
Side 86 - III.), is a circle. If the plane pass through the centre, then, as every point in the surface of the sphere is equidistant from its centre, the section is a plane figure, every point of whose periphery is equidistant from a certain point within it, and the figure is therefore a circle. But if the plane do not pass through...
Side 26 - Therefore all the interior angles of the figure, together with four right angles, are equal to twice as many right angles as the figure has sides.
Side 114 - TO THEIR DIFFERENCE ; So IS THE TANGENT OF HALF THE SUM OF THE OPPOSITE ANGLES', To THE TANGENT OF HALF THEIR DIFFERENCE.
Side 63 - If from a point without a circle two straight lines be drawn, one of which...
Side 147 - Mathematical o>jgraphy.) the arc of the equator, intercepted between the first meridian...
Side 64 - If from any point without a circle straight lines be drawn touching it, the angle contained by the tangents is double the angle contained by the straight line joining the points of contact and the diameter drawn through one of them.
Side 139 - Given the vertical angle, the difference of the two sides containing it, and the difference of the segments of the base made by a perpendicular from the vertex ; construct the triangle.
Side 86 - ... half a right angle, as the tangent of half the sum of the angles, at the base of the triangle to the tangent of half their difference.