Self-instruction in the Practice and Theory of Navigation, Volumen1Macmillan and Company, Limited, 1900 |
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Términos y frases comunes
Azimuth Brest Bristol Channel centre chart Cherbourg Chronometer circle coast Compass Bearing Compass Course Correct Magnetic Bearing Correct Magnetic Course Cosec Cosine Course and Distance decimal Declination degrees Deviation diagram Diff Difference of Latitude Difference of Longitude Dist divided Earth Easterly English Channel equal Equator formulas given Greenwich Half Mean Spring Heavenly Body height High Water Horizon Glass Hour Angle hours after high Hypothenuse Index Error Irish Sea low water Mean Spring Range Mercator's Meridian Altitude miles minutes Moon Moon's Morecambe Bay natural number Nautical Almanac Noon North P.M. tide parallel rulers Parallel Sailing Perpendicular Plane Sailing Point of Aries Pole position problem Quadrant right angle Right Ascension Secant sextant ship Ship's Head side Sine South Standard Port Star Sun's suppose Tangent tidal streams Traverse Table True Altitude True Course vernier water at Dover Westerly
Pasajes populares
Página 153 - Euclid's, and show by construction that its truth was known to us ; to demonstrate, for example, that the angles at the base of an isosceles triangle are equal...
Página 3 - In any proportion, the product of the means is equal to the product of the extremes.
Página 37 - The logarithm of a number is the power to which the base (in this case 10) must be raised to obtain the number.
Página 136 - Prove that in any right-angled triangle the square on the side opposite to the right angle is equal to the sum of the squares on the other two sides.
Página 78 - In the following table give the correct magnetic bearing of the distant object, and thence the deviation. 8. With the deviation as above, give the courses you would steer by the Standard Compass to make the following courses, correct magnetic : — . . 9.
Página 229 - ... between the first point of Aries and the circle of declination passing through the place of the body in the celestial concave.
Página 290 - ... the hour circle of the body, and the hour circle of the Vernal Equinox measured as above. For a given place the hour angle of a celestial body is the angle at the poles between the meridian of the place and the hour circle of the body, measured positively...
Página 228 - South of the Equator. The Longitude of a place is the arc of the Equator between the Meridian of Greenwich and the Meridian of the place.
Página 248 - In the northern hemisphere the cyclone rotates in a direction contrary to that in which the hands of a clock move, but in the southern hemisphere the rotation coincides with the movement of the hands.
Página 253 - Thus we have upper limb 0, lower limb 0, right limb 0 left limb 0. Longitude. — The spherical angle at the pole between the meridian of Greenwich and the meridian of any place on the earth's surface is the longitude of that place. Longitude may be measured in degrees of arc on the equator or on any parallel of latitude. Local Mean Time. — The time used in everyday life, and is the same as civil time. It is measured by the length of the mean solar day divided...