A Compleat Treatise of Practical Navigation Demonstrated from It's First Principles: Together with All the Necessary Tables. To which are Added, the Useful Theorems of Mensuration, Surveying, and Gauging; with Their Application to Practice. Written for the Use of the Academy in Tower-StreetJ. Brotherton, 1734 - 414 sider |
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Resultat 1-5 av 77
Side 45
... Miles , & c . ) and the Angle A 33 ° , 40 ' re- quir'd the other Leg BC in the fame parts with A B. Geometrically . Draw A B equal to 86 , from any Line of equal parts , then ( by Prob . 4. of Sect . 1. ) upon the point C B⋅ and ...
... Miles , & c . ) and the Angle A 33 ° , 40 ' re- quir'd the other Leg BC in the fame parts with A B. Geometrically . Draw A B equal to 86 , from any Line of equal parts , then ( by Prob . 4. of Sect . 1. ) upon the point C B⋅ and ...
Side 143
... Mile ( 60 of which make a Degree of a great Circle on the Earth ) as half a Minute ( the Time allow'd for the Experiment ) is of an Hour . 3. Thefe Spaces are called Knots , because at the End of each them , there is a piece of Twine ...
... Mile ( 60 of which make a Degree of a great Circle on the Earth ) as half a Minute ( the Time allow'd for the Experiment ) is of an Hour . 3. Thefe Spaces are called Knots , because at the End of each them , there is a piece of Twine ...
Side 144
... Miles ; and each Mile , by the Statute being 5280 Feet , therefore a Degree of a Meridian will be about 367200 Feet ; whence the of that , viz . a Mi- nute , or Nautical Mile , muft contain 6120 ftandard Feet ; confequently fince Minute ...
... Miles ; and each Mile , by the Statute being 5280 Feet , therefore a Degree of a Meridian will be about 367200 Feet ; whence the of that , viz . a Mi- nute , or Nautical Mile , muft contain 6120 ftandard Feet ; confequently fince Minute ...
Side 145
... Miles makes a Degree on the Meridian , make the Distance between Knot and Knot 42 Feet ; when at the fame time , by ... Miles of Distance given by the Log , to the true Diftance in Miles that the Ship has run . Example 1. Suppofe a Ship ...
... Miles makes a Degree on the Meridian , make the Distance between Knot and Knot 42 Feet ; when at the fame time , by ... Miles of Distance given by the Log , to the true Diftance in Miles that the Ship has run . Example 1. Suppofe a Ship ...
Side 146
... Miles in the Hour . Example 2. Suppofe a Ship runs at the rate of 6 % Knots in half a Minute , but meafuring the space between Knot and Knot , I find it to be only 44 Feet : Required the true rate of failing . Making it as 50 Feet , is ...
... Miles in the Hour . Example 2. Suppofe a Ship runs at the rate of 6 % Knots in half a Minute , but meafuring the space between Knot and Knot , I find it to be only 44 Feet : Required the true rate of failing . Making it as 50 Feet , is ...
Andre utgaver - Vis alle
A Compleat Treatise of Practical Navigation Demonstrated From It's First ... Archibald Patoun Ingen forhåndsvisning tilgjengelig - 2017 |
A Compleat Treatise of Practical Navigation Demonstrated From It's First ... Archibald Patoun Ingen forhåndsvisning tilgjengelig - 2017 |
A Compleat Treatise of Practical Navigation Demonstrated from It's First ... Archibald Patoun Ingen forhåndsvisning tilgjengelig - 2016 |
Vanlige uttrykk og setninger
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Populære avsnitt
Side iv - 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, etc.
Side iv - A diameter of a circle is a straight line drawn through the center and terminated both ways by the circumference, as AC in Fig.
Side iv - B is an arc, and a right line drawn from one end of an arc to the other is called a chord.
Side 19 - ... 1 and 6, 2 and 5, 3 and 4, 4 and 3, 5 and 2, 6 and 1 , 5 and 6, or 6 and 5.
Side 41 - IN a plain triangle, the fum of any two fides is to their difference, as the tangent of half the fum of the angles at the bafe, to the tangent of half their difference.
Side 39 - In any triangle, the sides are proportional to the sines of the opposite angles, ie. t abc sin A sin B sin C...
Side ix - KCML, the sum of the two parallelograms or square BCMH ; therefore the sum of the squares on AB and AC is equal to the square on BC.
Side 5 - AED, is equal to two right angles ; that is, the sum of the angles...
Side 5 - Thro' C, let CE be drawn parallel to AB ; then since BD cuts the two parallel lines BA, CE ; the angle ECD = B, (by part 3, of the last theo.) and again, since AC cuts the same parallels, the angle ACE = A (by part 2. of the last.) Therefore ECD + ACE = ACD =1 B + AQED THEOREM V. In any triangle ABC, all the three angles taken together are equal to two right angles, viz.
Side 53 - IT is well known, that the longitude of any place is an arch, of the equator, intercepted between the firft meridian and the meridian of that place ; and that this arch is proportional to the quantity of time that the fun requires to move from the one meridian to the other ; which is at the rate of 24 hours for 360 degrees; one hour for 15 degrees; one minute of time for.