A Complete Epitome of Practical Navigation ...author, and sold, 1852 - 688 páginas |
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Página 6
... mile to a decimal fraction . Reduce 33 of a degree to a decimal fraction . 60 ) 23.000 ( .383 or nearly . 6 ) 3.0 .5 ... miles , considered as a fraction of a degree ? 60 ) 15.00 ( .25 or 25 120 300 300 When the given quantity consists ...
... mile to a decimal fraction . Reduce 33 of a degree to a decimal fraction . 60 ) 23.000 ( .383 or nearly . 6 ) 3.0 .5 ... miles , considered as a fraction of a degree ? 60 ) 15.00 ( .25 or 25 120 300 300 When the given quantity consists ...
Página 8
... miles in 8 hours , how many miles will she run in 24 hours , supposing her to go at the same rate ? Hours . Miles . 8 : 49.5 Hours :: 24 24 1980 Suppose a watch or time - piece gain 14 seconds in 5 days 6 hours , how much will it gain ...
... miles in 8 hours , how many miles will she run in 24 hours , supposing her to go at the same rate ? Hours . Miles . 8 : 49.5 Hours :: 24 24 1980 Suppose a watch or time - piece gain 14 seconds in 5 days 6 hours , how much will it gain ...
Página 11
... miles in 8 hours , how many miles will she run in 24 hours , supposing her to go at the same rate ? As 8 hours Log . 0.90309 Suppose a watch or time - keeper gain 14 seconds in 5 days 6 hours , how much will it gain in 17 days 15 hours ...
... miles in 8 hours , how many miles will she run in 24 hours , supposing her to go at the same rate ? As 8 hours Log . 0.90309 Suppose a watch or time - keeper gain 14 seconds in 5 days 6 hours , how much will it gain in 17 days 15 hours ...
Página 24
... miles contained in one degree of longitude in that latitude ; the measure of a degree at the Equator being 60 miles . From the construction of the lines of chords , sines , and tangents , it is obvious that the 14 Plate L CONSTRUCTION ...
... miles contained in one degree of longitude in that latitude ; the measure of a degree at the Equator being 60 miles . From the construction of the lines of chords , sines , and tangents , it is obvious that the 14 Plate L CONSTRUCTION ...
Página 28
... miles . The first of these divisions is sometimes divided into 10 equal parts , each representing a degree , or 60 miles , and these again into halves or quarters of 30 or 15 miles each . USE OF THE LINE OF NUMBERS . Multiplication is ...
... miles . The first of these divisions is sometimes divided into 10 equal parts , each representing a degree , or 60 miles , and these again into halves or quarters of 30 or 15 miles each . USE OF THE LINE OF NUMBERS . Multiplication is ...
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Términos y frases comunes
angle Answer Apparent distance Arc second arch azimuth Bearing and Distance Chro chron Co-sec Co-sine Co-tan compass Corr correction corresponding course and distance degrees difference of latitude difference of longitude Dist Ditto East Equation EXAMPLE extent will reach feet given Greenwich mean Half-sum height horizon horizon-glass index error Latitude and Departure latitude by account logarithm LOGARITHMIC SINES meridian altitude middle latitude miles minutes moon Moon's apparent altitude Moon's horizontal parallax Natural Versed Nautical Almanac nonius noon North observed altitude observer's eye parallel perpendicular planet points Porto Santo radius refraction remainder required the latitude required the true right ascension sails Secant seconds sextant ship ship's sine South star subtracted Sun's declination sun's lower limb Sun's right ascension Sun's semidiameter Sun's true altitude Suvers taken Tang tangent true distance true longitude upper limb variation West zenith distance
Pasajes populares
Página 20 - 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, Fig.
Página 17 - Multiply the index of the quantity by the index of the power to which it is to be raised, and the result will be the power required.
Página 16 - 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 159 - Astronomers, with a view of obtaining a convenient and uniform measure of time, have recourse to a mean solar day, the length of which is equal to the mean or average of all the apparent solar days in a year. An imaginary Sun, called the mean Sun...
Página 5 - LV. contains the times of high water on the full and change of the moon, with the vertical rise of the tide, at many ports, harbors.
Página 15 - Consequently, when the first three terms of a proportion are given, the fourth is found by multiplying the second and third terms together, and dividing the product by the first term.
Página 231 - ... will be double the altitude of the sun's limb above the horizontal plane ; to the half of which, if the semidiameter, refraction, and parallax be applied, the result will be the true altitude of the centre.
Página 20 - For the purpose of measuring angles, the circumference is divided into 360 equal parts, called degrees ; each degree into 60 equal parts, called minutes ; each minute into 60 equal parts called seconds.
Página 52 - TO THEIR DIFFERENCE ; So IS THE TANGENT OF HALF THE SUM OF THE OPPOSITE ANGLES', To THE TANGENT OF HALF THEIR DIFFERENCE.
Página 37 - ... division. Or the extent from any division to another on the line of meridional parts, applied to the line of equal parts, will give the meridional difference of latitude between the two places denoted by the divisions.