The Complete Mathematical and General Navigation Tables: Including Every Table Required with the Nautical Almanc in Finding the Latitude and Longitude: with an Explanation of Their Construction, Use, and Application to Navigation and Nautical Astronomy, Trigonometry, Dialling, Gunnery, EtcSimpkin, Marshall, & Company, 1838 - Nautical astronomy |
From inside the book
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Page xxi
... right ascension .. 13 13 15 .... 17 337 19 21 XIII . XIV . Equations to equal altitudes , and mode of computation Equations to ditto , Part the Second , and ditto 21 22 XV . XVI . To reduce the sun's longitude , right ascension , and ...
... right ascension .. 13 13 15 .... 17 337 19 21 XIII . XIV . Equations to equal altitudes , and mode of computation Equations to ditto , Part the Second , and ditto 21 22 XV . XVI . To reduce the sun's longitude , right ascension , and ...
Page xxvi
... right ascension of a heavenly body 299 16 . The right ascension of the meridian 299 17 . The culminating point of a star or planet 299 .... 18 . The geocentric latitudes and longitudes of the planets .... 299 19 . The aphelion 299 20 ...
... right ascension of a heavenly body 299 16 . The right ascension of the meridian 299 17 . The culminating point of a star or planet 299 .... 18 . The geocentric latitudes and longitudes of the planets .... 299 19 . The aphelion 299 20 ...
Page xxvii
... right ascension of the meridian The equation of time ... ..... The length of the solar days always varying .. 308 ... right ascension , or the " sidereal time , " in page II . of the month in the Ephemeris , and the " mean time of ...
... right ascension of the meridian The equation of time ... ..... The length of the solar days always varying .. 308 ... right ascension , or the " sidereal time , " in page II . of the month in the Ephemeris , and the " mean time of ...
Page xxix
... right ascension to any given meridian , and to any time under that meridian 344 ..... VI . Given the mean time at ship and the longitude , to find the right ascension of the meridian & c ....... 345 VII . Given the right ascension of ...
... right ascension to any given meridian , and to any time under that meridian 344 ..... VI . Given the mean time at ship and the longitude , to find the right ascension of the meridian & c ....... 345 VII . Given the right ascension of ...
Page 2
... right ascension of that object into time . Example . The right ascension of the Moon is 355 : 44 : 48 " ; required the corre- sponding time ? 355 degrees , time answering to which • in the Table is · • • · 44 minutes , answering to ...
... right ascension of that object into time . Example . The right ascension of the Moon is 355 : 44 : 48 " ; required the corre- sponding time ? 355 degrees , time answering to which • in the Table is · • • · 44 minutes , answering to ...
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Common terms and phrases
90 degrees add the log angle of meeting answering approximate auxiliary angle celestial object co-secant co-sine co-tangent co-versed sine comp computed Constant log Corr correction course and distance decimal fraction departure Diff difference of latitude difference of longitude distance sailed earth equal equator Example find the Angle find the Difference fixed star given angle Given arch given log given side hence hypothenuse A C leg AC mean solar merid meridian meridional difference middle latitude miles minutes moon's apparent altitude moon's horizontal parallax multiplied natural number natural sine natural versed sine Nautical Almanac noon observation perpendicular B C plane PROBLEM prop proportional log quadrant radius reduced refraction right angled right ascension right-hand rising and setting secant semidiameter ship side A B side BC sidereal day spherical distance spherical triangle star's subtracted Table tabular tangent trigonometry true altitude tude versed sine supplement
Popular passages
Page 59 - Also, between the mean, thus found, .and the nearest extreme, find another geometrical mean, in the same manner ; and so on, till you are arrived within the proposed limit of the number whose logarithm is sought.
Page 206 - 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.
Page 258 - If two triangles have two angles of the one equal to two angles...
Page 59 - ... progression, to which those indices belong. Thus, the indices 2 and 3, being added together, make 5 ; and the numbers 4 and 8, or the terms corresponding to those indices, being multiplied together, make 32, which is the number answering to the index 5.
Page 59 - And, if the logarithm of any number be divided by the index of its root, the quotient will be equal to the logarithm of that root. Thus the index or logarithm of 64 is 6 ; and, if this number be divided by 2, the quotient will be = 3, which is the logarithm of 8, or the square root of 64.
Page 152 - RULE. Divide as in whole numbers, and from the right hand of the quotient point off as many places for decimals as the decimal places in the dividend exceed those in the divisor.
Page 153 - When there happens to be a remainder after the division ; or when the decimal places in the divisor are more than those in the dividend ; then ciphers may be annexed to the dividend, and the quotient carried on as far as required.
Page 154 - REDUCTION OF DECIMALS. CASE I. . To reduce a Vulgar Fraction to a Decimal Fraction of equal value.
Page 177 - II. The sine of the middle part is equal to the product of the cosines of the opposite parts.
Page 243 - II. the difference of latitude and departure corresponding to each course and distance, and set them in their respective columns : then the difference between the sums of the northings and southings will be the difference of latitude made good, of the same name with the greater ; and the difference between the sums of the eastings and westings will be the departure made good, of the same name with the greater quantity.