Mathematics, mechanics, heatAmerican School of Correspondence, 1903 |
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Αποτελέσματα 1 - 5 από τα 45.
Σελίδα 14
... give nearly a fair wind for running to Boston , and it is now necessary to find what course must be steered to make Boston Lightship . We find by use of the parallel rule ( referring it to the true com- pass card in the lower right ...
... give nearly a fair wind for running to Boston , and it is now necessary to find what course must be steered to make Boston Lightship . We find by use of the parallel rule ( referring it to the true com- pass card in the lower right ...
Σελίδα 15
... gives N 58 ° 221 W , or NW by W , which is given to the helmsman . Now suppose we had been sailing by compass for a certain number of hours NW by W , and that the leeway , variation and deviation were the same as in the above case ...
... gives N 58 ° 221 W , or NW by W , which is given to the helmsman . Now suppose we had been sailing by compass for a certain number of hours NW by W , and that the leeway , variation and deviation were the same as in the above case ...
Σελίδα 20
... gives the course . Also in Table 43 find the log secant of the course , and add this to the log of the true difference of latitude , and the number corresponding to this sum is the distance . For a more complete account see Bowditch ...
... gives the course . Also in Table 43 find the log secant of the course , and add this to the log of the true difference of latitude , and the number corresponding to this sum is the distance . For a more complete account see Bowditch ...
Σελίδα 21
... gives the course made good and the distance sailed in one hour . This is never used when in deep water . The reverse of the above problem is worked at noon each day when in NAVIGATION . 21 Current or Oblique Sailing 21.
... gives the course made good and the distance sailed in one hour . This is never used when in deep water . The reverse of the above problem is worked at noon each day when in NAVIGATION . 21 Current or Oblique Sailing 21.
Σελίδα 24
... gives another clue to the ship's position . Making the Land . Every precaution and forethought should be observed as the ship draws near the land , and the careful navi- gator will be on the lookout for the many evidences of the prox ...
... gives another clue to the ship's position . Making the Land . Every precaution and forethought should be observed as the ship draws near the land , and the careful navi- gator will be on the lookout for the many evidences of the prox ...
Συχνά εμφανιζόμενοι όροι και φράσεις
acting altitude amount beam body called center of gravity chart circle coefficient compass Corollary course cubic dead reckoning decimal degrees diameter direction distance divided earth elastic elastic limit energy equal equation EXAMPLES FOR PRACTICE factor of safety feet per second foot foot-pounds force formula friction gear given greater Greenwich mean heat Hence hour angle hypothenuse kinetic latitude length liquid load logarithm longitude magnetism mantissa mercury meridian miles minute molecules motion move multiplied Nautical orifice parallel parallelogram pendulum perpendicular plane polygon position poundal pounds per square pressure proportional pulley quadrant radius resultant revolutions revolutions per minute right angles right triangles sextant shaft ship ship's side specific gravity square inch straight line stress substance surface temperature Theorem tion triangles A B C unit velocity vertical vessel weight wheel wrought iron
Δημοφιλή αποσπάσματα
Σελίδα 70 - PROBLEM. To inscribe a circle in a given triangle. Let ABC be the given triangle : it is required to inscribe a circle in the triangle ABC.
Σελίδα 39 - A circle is a plane figure bounded by a curved line, called the circumference, every point of which is equally distant from a point within called the center.
Σελίδα 32 - If the diagonals of a quadrilateral bisect each other, the figure is a parallelogram.
Σελίδα 6 - Every body continues in its state of rest, or of uniform motion in a straight line, unless it is compelled to change that state by forces impressed upon it.
Σελίδα 7 - If, at a point in a straight line, two other straight lines, upon the opposite sides of it, make the adjacent angles together equal to two right angles, these two straight lines shall be in one and the same straight line.
Σελίδα 54 - If two polygons are composed of the same number of triangles, similar each to each and similarly placed, the polygons are similar.
Σελίδα 21 - If two triangles have two sides, and the included angle of the one equal to two sides and the included angle of the other, each to each, the two triangles are equal in all respects.
Σελίδα 31 - If two sides of a quadrilateral are equal and parallel, the figure is a parallelogram.
Σελίδα 60 - The area of a triangle is equal to one-half the product of its base and altitude.
Σελίδα 46 - An angle formed by a tangent and a chord is measured by onehalf the intercepted arc.