The practice of navigation and nautical astronomy. [With] Tables [and] Supplement to the first ed, Nide 261870 |
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Tulokset 1 - 5 kokonaismäärästä 83
Sivu 24
... side A C , opposite the right angle is called the hypothenuse ; one of the other sides , as BC , is called the base ; and the third side , A B , the perpendicular . B C 90. A SPHERE , or GLOBE , is a solid figure bounded by a curve ...
... side A C , opposite the right angle is called the hypothenuse ; one of the other sides , as BC , is called the base ; and the third side , A B , the perpendicular . B C 90. A SPHERE , or GLOBE , is a solid figure bounded by a curve ...
Sivu 30
Henry Raper. The common scale of equal parts has generally on one side four or five different scales for different measures , on each side of which one division is subdivided into 10 equal parts . 105. In the diagonal scale , the shorter ...
Henry Raper. The common scale of equal parts has generally on one side four or five different scales for different measures , on each side of which one division is subdivided into 10 equal parts . 105. In the diagonal scale , the shorter ...
Sivu 33
... sides of the one , as A B , A C , equal to two sides of the other , as D E , D F , and have likewise the angles A , D ... side common Hence they are equal , and the angles ACI , I C B being equal , each is half of A C B. D 118. If two ...
... sides of the one , as A B , A C , equal to two sides of the other , as D E , D F , and have likewise the angles A , D ... side common Hence they are equal , and the angles ACI , I C B being equal , each is half of A C B. D 118. If two ...
Sivu 34
... side B A will fall on ED ; and because the angles C and F are equal , the side CA will fall on FD . Hence , as the point A belongs to both the sides B A and CA , and D to ED and FD , the point A will coincide with D , and the angles A ...
... side B A will fall on ED ; and because the angles C and F are equal , the side CA will fall on FD . Hence , as the point A belongs to both the sides B A and CA , and D to ED and FD , the point A will coincide with D , and the angles A ...
Sivu 35
... sides and the A included angle equal in each . Hence these two triangles are equal ( No. 117 ) , C D B and therefore the angle C ( opposite the side A E ) is equal to the angle EBF ( opposite the equal side EF ) . Hence CBD which ...
... sides and the A included angle equal in each . Hence these two triangles are equal ( No. 117 ) , C D B and therefore the angle C ( opposite the side A E ) is equal to the angle EBF ( opposite the equal side EF ) . Hence CBD which ...
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The Practice Of Navigation And Nautical Astronomy. [with] Tables [and ... Henry Raper Esikatselu ei käytettävissä - 2019 |
The Practice Of Navigation And Nautical Astronomy. [with] Tables [and ... Henry Raper Esikatselu ei käytettävissä - 2022 |
Yleiset termit ja lausekkeet
add the log altitude alts appears Azim azimuth bearing called centre chronometer circle compass Computation corr correction cosec Course and Distance D.Lat Dist decimal decl declination degree deviation diff difference direction divided employed equal equator error feet find the Course fraction given gives greater Greenwich Date height of eye Hence horizon hour-angle interval latitude less logarithms longitude magnetic magnetic bearing mean measured meridian method miles moon moon's multiplied Nautical Almanac nearly noon observation parallax parallel Parallel Sailing Plane Sailing planet pole prime vertical prop proportion quantity radius ratio reckoned reduce refraction result rhumb line right angles Right Ascension sailing Semid sextant shews ship ship's head side sine star subtract sum rejecting tens sun's TRAVERSE TABLE triangle true true alt variation watch
Suositut otteet
Sivu 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.
Sivu 147 - Since the apparent altitude is too great on account of refraction, and too small on account of parallax, the diff. between these quantities is the diff. between the true and apparent altitudes. This difference, or the combined effect of parallax and refraction, is called the Correction of Altitude. The moon's Corr. of Alt. is given in Table 39; that of a star is merely its refraction. 439. The SEMI-DIAMETER of a celestial body is half the angle subtended by the diameter of the visible disc. Thus...
Sivu 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.
Sivu 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.
Sivu 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...
Sivu 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.
Sivu 186 - A line drawn from Polaris perpendicular to the line of the Pointers, and on the opposite side to the Great Bear, passes, at 48° distance, through CAPELLA, one of the brightest stars. In this same line, about the same distance on the opposite side of the pole, is a.
Sivu 145 - ... of Altitude are circles parallel to the horizon. 431. ZENITH DISTANCE is the arc included between the zenith and the celestial body, or the angular distance of a body from the zenith of which that arc is the measure. The zenith distance is, therefore, the complement of the altitude to 90°, as Z A.
Sivu 4 - RULE. Multiply all the numerators together for a new numerator, and all the denominators for a new denominator: then reduce the new fraction to its lowest terms.
Sivu 358 - Frigate La Venus, 1836-9, vol. iii. p. 419) paid particular attention to this indication, and remarks that the observations generally shew a lowering of the thermometer on approaching land, but they disprove that the water on a bank is always colder.* 1039. The temperature of the sea has been observed to change several degrees, in intervals of time varying from a few hours to a day and a half previous to a change of wind, the water becoming gradually warmer when the wind was about to blow from a...