Elements of Surveying, and Navigation: With a Description of the Instruments and the Necessary Tables |
From inside the book
Results 1-5 of 12
Page 171
... longitude of any place is the arc of the equator inter- cepted between the meridian of that place and the first meridian , and is east or west , according as the place lies east or west of the first meridian . 6. The difference of longitude ...
... longitude of any place is the arc of the equator inter- cepted between the meridian of that place and the first meridian , and is east or west , according as the place lies east or west of the first meridian . 6. The difference of longitude ...
Page 178
... longitude , made on any course , cannot be determined by these methods , for this being the arc of the equator intercepted between two meridians , cannot be found under the supposition that the meridians are parallel . The most simple ...
... longitude , made on any course , cannot be determined by these methods , for this being the arc of the equator intercepted between two meridians , cannot be found under the supposition that the meridians are parallel . The most simple ...
Page 179
... longitude . Let IQH represent the equa- tor , and FDN any parallel of latitude : then , CI will be the radius of the equator , and EF the radius of the parallel . Suppose FD to be the dis- tance sailed , then the difference of longitude ...
... longitude . Let IQH represent the equa- tor , and FDN any parallel of latitude : then , CI will be the radius of the equator , and EF the radius of the parallel . Suppose FD to be the dis- tance sailed , then the difference of longitude ...
Page 180
... longitude will be the hypothenuse of the corresponding right angled triangle . EXAMPLES . 1. A ship from latitude 53 ° 56 ′ N. , longitude 10 ° 18 ′ E. , has sailed due west , 236 miles required her present longitude . By the rule As ...
... longitude will be the hypothenuse of the corresponding right angled triangle . EXAMPLES . 1. A ship from latitude 53 ° 56 ′ N. , longitude 10 ° 18 ′ E. , has sailed due west , 236 miles required her present longitude . By the rule As ...
Page 181
... longitude which a ship makes when sailing on a parallel of latitude may be determined , we come now to examine the more general problem , viz . to find the lon- gitude which a ship makes when sailing upon any oblique rhumb . There are ...
... longitude which a ship makes when sailing on a parallel of latitude may be determined , we come now to examine the more general problem , viz . to find the lon- gitude which a ship makes when sailing upon any oblique rhumb . There are ...
Other editions - View all
Elements of Surveying, and Navigation: With a Description of the Instruments ... Charles Davies No preview available - 2016 |
Elements of Surveying, and Navigation: With a Description of the Instruments ... Charles Davies No preview available - 2016 |
Popular passages
Page 12 - FRACTION is a negative number, and is one more than the number of ciphers between the decimal point and the first significant Jigure.
Page 49 - ... the square of the hypothenuse is equal to the sum of the squares of the other two sides.
Page 41 - C' (89) (90) (91) (92) (93) 112. In any plane triangle, the sum of any two sides is to their difference as the tangent of half the sum of the opposite angles is to the tangent of half their difference.
Page 34 - The circumference of every circle is supposed to be divided into 360 equal parts called degrees, and each degree into 60 equal parts called minutes, and each minute into 60 equal parts called seconds, and these into thirds, fourths, &c.
Page 73 - Being on a horizontal plane, and wanting to ascertain the height of a tower, standing on the top of an inaccessible hill, there were measured, the angle of elevation of the top of the hill 40°, and of the top of the tower 51° ; then measuring in a direct line 180 feet farther from the hill, the angle of elevation of the top of the tower Cway 33° 45' ; required the height of the tower.
Page 40 - THEOREM I. The sides of a plane triangle are proportional to the sines of their opposite angles.
Page 19 - A right-angled triangle is one which has a right angle. The side opposite the right angle is called the hypothenuse.
Page 85 - What must be the nominal value of 4% bonds that will yield to their owner an annual income of $720 ? 7. A owns $6000 of 5% bonds; B owns $8000 of 4£% bonds. How much greater is the annual income from B's bonds than from A's ? 8. Find the area of a piece of land in the form of a rhomboid, whose base is 32 rods and whose altitude is 15 rods.
Page 35 - The secant of an arc is the line drawn from the centre of the circle through one extremity of the arc, and limited by the tangent passing through the other extremity. Thus, OC is the secant of the arc AB.
Page 130 - Take a board, of about one foot square, paste white paper upon it, and perforate it through the center; the diameter of the hole being somewhat larger than the diameter of the telescope of the theodolite. Let this board be so fixed to a vertical staff" as to slide up and down freely ; and let a small piece of board, about three inches square, be nailed to the lower edge of it, for the purpose of holding a candle. About twenty-five minutes before the time of the greatest eastern or western elongation...