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 |
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Resultat 1-5 av 88
Side vii
... polar star's altitude may be readily taken out , at sight , to the nearest second of a degree , by means of five columns of proportional parts ; and , to render the table permanent for at least half a century , the annual variation of ...
... polar star's altitude may be readily taken out , at sight , to the nearest second of a degree , by means of five columns of proportional parts ; and , to render the table permanent for at least half a century , the annual variation of ...
Side xiii
... polar star taken at any hour of the night , which will be found very useful in all parts of the northern hemisphere . - The VIIIth Problem shows the method of finding the latitude by the altitudes of two stars taken at any time of the ...
... polar star taken at any hour of the night , which will be found very useful in all parts of the northern hemisphere . - The VIIIth Problem shows the method of finding the latitude by the altitudes of two stars taken at any time of the ...
Side xxi
... polar star Principles , and mode of computing ditto , between pages 17 and 19 . Correction of the latitude deduced from the preceding table The mean sun's approximate right ascension .. 13 13 15 .... 17 337 19 21 XIII . XIV . Equations ...
... polar star Principles , and mode of computing ditto , between pages 17 and 19 . Correction of the latitude deduced from the preceding table The mean sun's approximate right ascension .. 13 13 15 .... 17 337 19 21 XIII . XIV . Equations ...
Side xxvi
... Polar circles .... 299 299 15 . The 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 ...
... Polar circles .... 299 299 15 . The 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 ...
Side xxx
... polar star , taken at any hour of the night , to find the latitude of the place of observation ..... To find the latitude by double altitudes of the sun .... 394 398 VIII . To find the latitude by the altitudes of two known fixed stars ...
... polar star , taken at any hour of the night , to find the latitude of the place of observation ..... To find the latitude by double altitudes of the sun .... 394 398 VIII . To find the latitude by the altitudes of two known fixed stars ...
Innhold
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Vanlige uttrykk og setninger
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
Populære avsnitt
Side 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.
Side 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.
Side 258 - If two triangles have two angles of the one equal to two angles...
Side 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.
Side 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.
Side 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.
Side 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.
Side 154 - REDUCTION OF DECIMALS. CASE I. . To reduce a Vulgar Fraction to a Decimal Fraction of equal value.
Side 177 - II. The sine of the middle part is equal to the product of the cosines of the opposite parts.
Side 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.