A treatise on navigation, and nautical astronomyBaldwin, Cradock, and Joy, 1824 - 551 sider |
Inni boken
Resultat 1-5 av 37
Side v
... right ascension , and the equation of time , here given , with the auxiliary table for reducing them to subse- quent years , will enable the mariner to find his longi- tude with sufficient exactness by a chronometer for more than sixty ...
... right ascension , and the equation of time , here given , with the auxiliary table for reducing them to subse- quent years , will enable the mariner to find his longi- tude with sufficient exactness by a chronometer for more than sixty ...
Side 213
... right ascension of a celestial object is the arc of the equator intercepted between that meridian and the first point of Aries , estimated like the longitude , in the order of the signs . The right ascension of any meridian is the same ...
... right ascension of a celestial object is the arc of the equator intercepted between that meridian and the first point of Aries , estimated like the longitude , in the order of the signs . The right ascension of any meridian is the same ...
Side 214
... right ascension is the sidereal time , or the sun's right ascension taken from the sidereal time leaves the solar or apparent time . A mean solar day is longer than a sidereal one , for the sun daily advances in the ecliptic so far ...
... right ascension is the sidereal time , or the sun's right ascension taken from the sidereal time leaves the solar or apparent time . A mean solar day is longer than a sidereal one , for the sun daily advances in the ecliptic so far ...
Side 217
... right ascension for July 4 , 1825 , from Table 21 , thus 6h 52m 43s + 4m 7's , I mean that the right ascension is 6h 52m 43s at noon , and that its next value given in the table is 4m 7s greater . If I take out the moon's horizontal ...
... right ascension for July 4 , 1825 , from Table 21 , thus 6h 52m 43s + 4m 7's , I mean that the right ascension is 6h 52m 43s at noon , and that its next value given in the table is 4m 7s greater . If I take out the moon's horizontal ...
Side 220
... right ascen- sion , ( see the use of Table 30 , ) and also that of the given object , and from the object's corrected right ascension subtract the sun's , and the remainder will be the required time nearly . If still greater exact- ness ...
... right ascen- sion , ( see the use of Table 30 , ) and also that of the given object , and from the object's corrected right ascension subtract the sun's , and the remainder will be the required time nearly . If still greater exact- ness ...
Andre utgaver - Vis alle
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.