The Practice of Navigation: And Nautical AstronomyJ. D. Potter, 1882 - 910 σελίδες |
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Αποτελέσματα 1 - 5 από τα 74.
Σελίδα xix
... MOON'S ALTITUDE IV . BY AN OCCULTATION ..... ... V. BY ECLIPSES OF JUPITER'S SATELLITES PAGE 279 279 283 301 304 ...... 307 VIII . FINDING THE VARIATION OF THE COMPASS ..... ... 308 I. BY THE AMPLITUDE II . BY THE AZIMUTH 308 310 III ...
... MOON'S ALTITUDE IV . BY AN OCCULTATION ..... ... V. BY ECLIPSES OF JUPITER'S SATELLITES PAGE 279 279 283 301 304 ...... 307 VIII . FINDING THE VARIATION OF THE COMPASS ..... ... 308 I. BY THE AMPLITUDE II . BY THE AZIMUTH 308 310 III ...
Σελίδα xx
... 22. For reducing the Moon's Declination NAUTICAL ALMANAC . 23. Acceleration 24. Retardation ... ... ...... 611 613 613 25. For finding the Equation of Second Differences .. 614 TIMES UF TABLE PAGE 26. Apparent Time of the Sun's TABLES .
... 22. For reducing the Moon's Declination NAUTICAL ALMANAC . 23. Acceleration 24. Retardation ... ... ...... 611 613 613 25. For finding the Equation of Second Differences .. 614 TIMES UF TABLE PAGE 26. Apparent Time of the Sun's TABLES .
Σελίδα xxi
... Moon's apparent Altitude ..... 630 40. Corresponding Horizontal Parallax and Semidia- meter of the Moon .... 639 639 41. Correction of the Moon's Equatorial Parallax for the Figure of the Earth 42. Augmentation of the Moon's ...
... Moon's apparent Altitude ..... 630 40. Corresponding Horizontal Parallax and Semidia- meter of the Moon .... 639 639 41. Correction of the Moon's Equatorial Parallax for the Figure of the Earth 42. Augmentation of the Moon's ...
Σελίδα xxii
... Moon's Second Correction of Distance 648 .... 57. Correction of the Greenwich Mean Time for the Second Difference of the Lunar Distance .... 649 58. Error of the Ship's Place in Nautical Miles , and of the Longitude in Time ...
... Moon's Second Correction of Distance 648 .... 57. Correction of the Greenwich Mean Time for the Second Difference of the Lunar Distance .... 649 58. Error of the Ship's Place in Nautical Miles , and of the Longitude in Time ...
Σελίδα 147
... moon's hor . par . in the Nautical Almanac , which is the equatoreal hor . par . , is too great for any latitude . The reduction is given in Table 41 . 438. Since the apparent altitude is too great on account of refraction , and too ...
... moon's hor . par . in the Nautical Almanac , which is the equatoreal hor . par . , is too great for any latitude . The reduction is given in Table 41 . 438. Since the apparent altitude is too great on account of refraction , and too ...
Άλλες εκδόσεις - Προβολή όλων
The Practice of Navigation and Nautical Astronomy Henry Raper Δεν υπάρχει διαθέσιμη προεπισκόπηση - 2018 |
The Practice of Navigation and Nautical Astronomy (Classic Reprint) Henry Raper Δεν υπάρχει διαθέσιμη προεπισκόπηση - 2017 |
The Practice of Navigation and Nautical Astronomy Henry Raper Δεν υπάρχει διαθέσιμη προεπισκόπηση - 2018 |
Συχνά εμφανιζόμενοι όροι και φράσεις
add the log altitude alts appears azim azimuth bearing celestial body centre chron chronometer circle compass Computation corr correction cosec D.Lat Dist decimal decl declination deviation diff difference direction divided employed equal equator error exceeds extr feet given gives greater Greenwich Date height of eye Hence horizon hour-angle interval latitude less logarithms longitude lunar magnetic mean measured meridian method miles moon moon's Nautical Almanac nearly noon observation parallax parallel Parallel Sailing Plane Sailing pole port prime vertical prop quantity reckoned reduce refraction result rhumb line Right Ascension sailing Semid sextant shews ship ship's side sine star subtract sum rejecting tens sun's TRAVERSE TABLE triangle true true alt variation watch
Δημοφιλή αποσπάσματα
Σελίδα 41 - The angle in a semicircle is a right angle ; the angle in a segment greater than a semicircle is less than a right angle; and the angle in a segment less than a semicircle is greater than a right angle.
Σελίδα 19 - The characteristic of a number less than 1 is found by subtracting from 9 the number of ciphers between the decimal point and the first significant digit, and writing — 10 after the result.
Σελίδα 38 - A parallelogram is a four.sided figure, of which the opposite sides are parallel; and the diameter is the straight line joining two of its opposite angles.
Σελίδα vii - This is the more important, as very indistinct and erroneous notions prevail among practical persons on the subject of accuracy of computation ; and much time is, in consequence, often lost in computing to a degree of precision wholly inconsistent with that of the elements themselves. The mere habit of working invariably to a useless precision, while it can never advance the computer's knowledge of the subject, has the unfavourable tendency of deceiving those who are not aware of the true nature...
Σελίδα 147 - For the same body the semidiameter varies with the distance; thus, the difference of the sun's semidiameter at different times of the year is due to the change of the earth's distance from the sun; and similarly for the moon and the planets.
Σελίδα 22 - A CIRCLE is a figure bounded by a curve line called the circumference,* of which every point is at the same distance from a point within, called the centre. Thus, ABD is a circle, and C the centre.
Σελίδα 43 - ... section shall be parallel to the remaining side of the triangle. Let DE be drawn parallel to BC, one of the sides of the triangle ABC: then BD shall be to DA, as CE to EA. Join BE, CD; then the triangle BDE is equal...
Σελίδα 37 - ... the three interior angles of' a triangle are together equal to two right angles.
Σελίδα 39 - Hence it is plain that triangles on the same or equal bases, and between the same parallels, are equal, seeing (by cor.
Σελίδα 105 - The distance between two points on the surface of a sphere is the length of the minor arc of a great circle between them.