The Complete Mathematical and General Navigation Tables: Including Every Table Necessary to be Used with the Nautical Almanac in Finding the Latitude and Longitude : with Their Description and Use, Comprising the Principles of Their Construction, and Their Direct Application to Plane and Spherical Trigonometry, Navigation, Nautical Astronomy, Dialling, Practical Gunnery, Mensuration, Guaging &c. &c, Volum 1Baldwin and Cradock, 1828 - 664 sider |
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Resultat 1-5 av 94
Side xxv
... Error arising from a deviation of one minute in the parallelism of the surfaces of the central mirror of the circular instrument of reflection ...... XXIII . Error arising from an inclination of the line of collimation to the plane of ...
... Error arising from a deviation of one minute in the parallelism of the surfaces of the central mirror of the circular instrument of reflection ...... XXIII . Error arising from an inclination of the line of collimation to the plane of ...
Side xxvii
... errors of the log line and the Solution of a very useful problem in great circle sailing .. To find the time of high water at any known place To make out a day's work at sea by inspection ..... 272 276 103 .... 249 I. II . III ...
... errors of the log line and the Solution of a very useful problem in great circle sailing .. To find the time of high water at any known place To make out a day's work at sea by inspection ..... 272 276 103 .... 249 I. II . III ...
Side xxix
... error of a watch by equal altitudes of the sun ...... 377 To find the error of a watch by equal altitudes of a fixed star .. 380 Given the latitude of a place , and the altitude and declination of the sun ; to find the apparent time of ...
... error of a watch by equal altitudes of the sun ...... 377 To find the error of a watch by equal altitudes of a fixed star .. 380 Given the latitude of a place , and the altitude and declination of the sun ; to find the apparent time of ...
Side xxxvi
... error of a sextant , & c . so as to guard against the error arising from the elasticity or spring of the bar , & c ...... 653 Of taking altitudes by means of an artificial horizon 655 A new and correct method of finding the longitude of ...
... error of a sextant , & c . so as to guard against the error arising from the elasticity or spring of the bar , & c ...... 653 Of taking altitudes by means of an artificial horizon 655 A new and correct method of finding the longitude of ...
Side xxxix
... errors . Many of the works in question are ex- tremely incomplete , through their want of particular tables , and their logar- ithms not being extended to a sufficient number of decimal places : such as those by Mendoza Rios , where the ...
... errors . Many of the works in question are ex- tremely incomplete , through their want of particular tables , and their logar- ithms not being extended to a sufficient number of decimal places : such as those by Mendoza Rios , where the ...
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Vanlige uttrykk og setninger
24 hours ascension at noon auxiliary angle celestial object co-secant co-sine co-tangent column computed Constant log Correction of ditto corresponding course and distance decimal declination at noon degrees departure Diff difference of latitude difference of longitude dist east equation Example fixed star Greenwich Half sum hence horizontal parallax hypothenuse King's Island leg AC mean merid meridian meridian of Greenwich meridional altitude meridional difference middle latitude miles minutes moon's apparent altitude Moon's reduced Moon's true natural number natural versed sine Nautical Almanac observed altitude perpendicular place of observation planet's Port Jackson Problem Prop proportional log radius reduced right ascension refraction required the true RULE secant seconds semi-diameter side A B spherical distance spherical triangle spherical trigonometry subtracted sun's declination sun's lower limb Sun's reduced right Sun's right ascension Table tangent true altitude true central altitude true central distance watch
Populære avsnitt
Side 19 - Given two sides and the included angle, to find the third side and the remaining angles. The sum of the required angles is found by subtracting the given angle from 180°. The difference of the required angles is then found by Theorem II. Half the difference added to half the sum gives the greater angle, and, subtracted, gives the less angle.
Side 484 - AZIMUTH, in astronomy, an arch of the horizon, intercepted between the meridian of the place and the azimuth, or vertical circle passing through the centre of the object, which...
Side 212 - 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 63 - 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 63 - 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 487 - ... reckoned from the north in north latitude, but from the south in south latitude. » In observations of the altitude of the sun'< loiter limb (by afore enervation) it is u«u»l to »<M 12' for tic cBecl of dip, parallax, ami sern diameter.
Side 159 - 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 681 - The Young Navigator's Guide to the Sidereal and Planetary Parts of Nautical Astronomy.
Side 649 - ... position with respect to a luminous body, can cast a circular shadow ; likewise all calculations of eclipses, and of the places of the planets, are made upon supposition that the earth is a sphere, and they all answer to the true times when accurately calculated. When an eclipse of the moon happens, it is observed sooner by those who live eastward than by those who live westward ; and, by frequent experience, astronomers have determined that, for every fifteen degrees difference of longitude,...
Side 183 - II. The sine of the middle part is equal to the product of the cosines of the opposite parts.