A Complete Epitome of Practical Navigation, and Nautical Astronomy: Containing All Necessary Instructions for Keeping a Ship's Reckoning at Sea, Volumen1Imray, Laurie, Norie and Wilson, 1917 - 595 páginas |
Dentro del libro
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Página iv
... give a short but comprehensive view of the solar system , where the Earth is considered as a Planet ; and have then described the various imaginary circles of the sphere . The nature of parallax , refraction , & c . , are explained ...
... give a short but comprehensive view of the solar system , where the Earth is considered as a Planet ; and have then described the various imaginary circles of the sphere . The nature of parallax , refraction , & c . , are explained ...
Página 5
... gives 73 and 1 over ( i.e. , 1 ° or 60 ' ) ; then 60 and 15 make 75 , and 2 into 75 gives 37 ' with I over ( i.e. , I ' or 60 " ) ; finally , 60 and 40 make 100 , and 2 into 100 gives 50 " . REDUCTION OF DEGREES , & C . , AND TIME . An ...
... gives 73 and 1 over ( i.e. , 1 ° or 60 ' ) ; then 60 and 15 make 75 , and 2 into 75 gives 37 ' with I over ( i.e. , I ' or 60 " ) ; finally , 60 and 40 make 100 , and 2 into 100 gives 50 " . REDUCTION OF DEGREES , & C . , AND TIME . An ...
Página 6
... gives 300 , to which add 48 , and the result is 348 minutes . Then 348 multiplied by 60 gives 20880 , to which add II , and the final result is 20891 seconds . And similarly for any other quan- tity . Thus , 18 ′ 42 ′′ reduced to " give ...
... gives 300 , to which add 48 , and the result is 348 minutes . Then 348 multiplied by 60 gives 20880 , to which add II , and the final result is 20891 seconds . And similarly for any other quan- tity . Thus , 18 ′ 42 ′′ reduced to " give ...
Página 11
... give the minutes or seconds required : for example , 5 of a degree multiplied by 6 gives 30 minutes , and 9 of a minute , 54 seconds . On the contrary , to reduce minutes and seconds to tenths of a degree or minute , divide them by 6 ...
... give the minutes or seconds required : for example , 5 of a degree multiplied by 6 gives 30 minutes , and 9 of a minute , 54 seconds . On the contrary , to reduce minutes and seconds to tenths of a degree or minute , divide them by 6 ...
Página 15
... gives the log . of their product ; and the difference of their logs . the log . of the quotient ; the log . of any number , being multiplied by 2 , will give the log . of the square of that number ; or , multiplied by 3 , will give the ...
... gives the log . of their product ; and the difference of their logs . the log . of the quotient ; the log . of any number , being multiplied by 2 , will give the log . of the square of that number ; or , multiplied by 3 , will give the ...
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Otras ediciones - Ver todas
A Complete Epitome of Practical Navigation, and Nautical Astronomy ... John William Norie,J. W. Saul Sin vista previa disponible - 2018 |
A Complete Epitome of Practical Navigation, and Nautical Astronomy ... John William Norie,William Henry Rosser Sin vista previa disponible - 2018 |
A Complete Epitome of Practical Navigation, and Nautical Astronomy ... John William Norie,J W Saul Sin vista previa disponible - 2022 |
Términos y frases comunes
apparent azimuth bearing centre chart chronometer circle co-latitude Co-sec column compass course Corr correction course and distance dead reckoning decl declination departure deviation Diff difference of latitude difference of longitude direction dist distance run earth east equal equator equinoctial Example feet given Greenwich date Greenwich mean heavenly body horizon hour angle index error interval leeway logarithm magnetic course meridian altitude middle latitude miles millibars moon moon's Nautical Almanac noon Northern Hemisphere observed altitude parallax parallel parallel sailing plane plane sailing point of Aries polar distance pole port position prime vertical refraction required the latitude right angles right ascension sailing set and drift sextant ship ship's head side sidereal star subtract tide Traverse Table triangle true altitude true course variation vernier vertical wind zenith distance ΙΟ
Pasajes populares
Página 223 - January 31, February 28, March 31, April 30, May 31, June 30, July 31, August 31, September 30, October 31, November 30, December 31.
Página 37 - The square described on the hypothenuse of a right-angled triangle is equivalent to the sum of the squares described on the other two sides.
Página 221 - Ascension, and the interval between the departure of any meridian from the mean Sun and its succeeding return to it is the duration of the mean solar day. Clocks and chronometers are adjusted to mean solar time ; so that a complete revolution (through 24 hours) of the hour hand of...
Página 26 - The circumference of a circle is divided into 360 equal parts, called degrees; each degree into 60 minutes ; each minute into 60 seconds.
Página 199 - The Ram, the Bull, the heavenly Twins, And next the Crab the Lion shines, The Virgin and the Scales ; The Scorpion, Archer, and He-goat, The Man that holds the watering-pot, And Fish with glittering tails.
Página 21 - DIVISION BY LOGARITHMS. RULE. From the logarithm of the dividend subtract the logarithm of the divisor, and the number answering to the remainder will be the quotient required.
Página 73 - The shortest DISTANCE between two points on the surface of a sphere is the arc of a great circle passing through those points.
Página 36 - Jf a straight line fall upon two parallel straight lines, it makes the alternate angles equal to one another ; and the exterior angle equal to the interior and opposite upon the same side ; and likewise the two interior angles upon the same side together equal to two right angles.
Página 161 - The relative effects of these two bodies on the oceanic waters are directly as their mass, and inversely as the square of their distance...
Página 36 - IF a straight line falling upon two other straight lines makes the exterior angle equal to the interior and opposite upon the same side of the line ; or makes the interior angles upon the same side together equal to two right angles ; the two straight lines shall be parallel to one another.