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 100
Side xxv
... altitude XIX . To reduce the true altitudes of the sun , moon , stars , and planets , XX . Auxiliary angles ...... 33 883888 to their apparent altitudes . 40 42 XXI . Correction of the auxiliary angle when the moon's distance from a ...
... altitude XIX . To reduce the true altitudes of the sun , moon , stars , and planets , XX . Auxiliary angles ...... 33 883888 to their apparent altitudes . 40 42 XXI . Correction of the auxiliary angle when the moon's distance from a ...
Side xxviii
... true altitude of its centre Given the observed altitude of the lower or upper limb of the moon , to find the true altitude of her centre .... Given the observed central altitude of a planet , to find its true altitude .... ... 320 323 ...
... true altitude of its centre Given the observed altitude of the lower or upper limb of the moon , to find the true altitude of her centre .... Given the observed central altitude of a planet , to find its true altitude .... ... 320 323 ...
Side xxxix
... altitude . This improvement will have a tendency to facilitate nautical calculations . Table X. - The arrangement of ... true correction of the moon's apparent altitude corresponding to every second of horizontal parallax , and to every ...
... altitude . This improvement will have a tendency to facilitate nautical calculations . Table X. - The arrangement of ... true correction of the moon's apparent altitude corresponding to every second of horizontal parallax , and to every ...
Side 4
... altitude , which is evidently greater than the true altitude SOH by the arc PH , expressed by the angle of horizontal depression POH . But if the altitude of the object S is to be taken by a back observation , then , the observer's back ...
... altitude , which is evidently greater than the true altitude SOH by the arc PH , expressed by the angle of horizontal depression POH . But if the altitude of the object S is to be taken by a back observation , then , the observer's back ...
Side 20
... altitude in Table X. have been com- puted on the assumption that the motions of the polar star were witnessed from ... true altitude of the polar star , and thence the correction of latitude ? Latitude or elevation of the pole • 60 : 0 0 ...
... altitude in Table X. have been com- puted on the assumption that the motions of the polar star were witnessed from ... true altitude of the polar star , and thence the correction of latitude ? Latitude or elevation of the pole • 60 : 0 0 ...
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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.