The Practice of Navigation: And Nautical AstronomyJ. D. Potter, 1882 - 910 σελίδες |
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Αποτελέσματα 1 - 5 από τα 82.
Σελίδα 57
... West , according as it is to the east or west of the first meridian ; thus A is in west Longitude , H is in east longitude . * The first meridian is a matter of arbitrary choice amongst different nations ; thus , the French refer to ...
... West , according as it is to the east or west of the first meridian ; thus A is in west Longitude , H is in east longitude . * The first meridian is a matter of arbitrary choice amongst different nations ; thus , the French refer to ...
Σελίδα 58
... west , * Since the meridians are all parallel at the equator and meet at the poles , the distance between any two meridians , measured east and west , is less as the latitude is greater ; that is , the absolute number of miles , or of ...
... west , * Since the meridians are all parallel at the equator and meet at the poles , the distance between any two meridians , measured east and west , is less as the latitude is greater ; that is , the absolute number of miles , or of ...
Σελίδα 59
... west , or in W. long . she sails east , she diminishes her longitude . Hence , when one longitude is given , and also the diff . long . , the other longitude is easily found . Ex . 1. A ship from long . 31 ° 40 ′ E. sails east 3 ° 9 ...
... west , or in W. long . she sails east , she diminishes her longitude . Hence , when one longitude is given , and also the diff . long . , the other longitude is easily found . Ex . 1. A ship from long . 31 ° 40 ′ E. sails east 3 ° 9 ...
Σελίδα 64
... West ; the East being towards the right when facing the North . N NbW NNW NWbN NW NW b W WNW WbN W Wbs WSW SW b W SW Sq MS SSW NbE NNE NEbN NE NEBE SbW S SbE ENE EbN E Ebs ESE SE SE b S SSE be All the points of the compass are called by ...
... West ; the East being towards the right when facing the North . N NbW NNW NWbN NW NW b W WNW WbN W Wbs WSW SW b W SW Sq MS SSW NbE NNE NEbN NE NEBE SbW S SbE ENE EbN E Ebs ESE SE SE b S SSE be All the points of the compass are called by ...
Σελίδα 65
... west ( S.W. ) . A point half - way between one of these last and a cardinal point is called , in like manner , by a ... West side is called North by West . Thus , on inspecting the compass , it is easy to see the reason of the names E ...
... west ( S.W. ) . A point half - way between one of these last and a cardinal point is called , in like manner , by a ... West side is called North by West . Thus , on inspecting the compass , it is easy to see the reason of the names E ...
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.