 | Thomas Liddell Ainsley - Merchant marine - 1875 - 416 pages
...quantities by simple interpolation ; that is, by assuming that the difference of the quantities are proportional to the differences of the times, which is equivalent to assuming that the differences in the Ephemeris are constant. This, however, is never the case ; but the error arising from the assumption... | |
 | Thomas Liddell Ainsley - 1880 - 482 pages
...quantities by simple interpolation ; that is, by assuming that the difference of the quantities are proportional to the differences of the times, which is equivalent to assuming that the differences in the Ephemeris are constant. This, however, is never the case ; for example, referring to the Nautical... | |
 | Nathaniel Bowditch - Nautical astronomy - 1888 - 704 pages
...differences of the times ; in other words, that the differences given in the Almanac are constant ; which is never the case, but the error arising from the...smaller the less the interval between the times in the Almanac. Hence, those quantities which vary most irregularly are given for the smallest units of time;... | |
 | William Chauvenet - Astronomical instruments - 1891 - 716 pages
...quantities by simple interpolation ; that is, by assuming that the differences of the quantities are proportional to the differences of the times, which...smaller the less the interval between the times in the Ephemcris ; hence, those quantities which vary most irregularly, as the moon's right ascension and... | |
 | Nathaniel Bowditch - Nautical astronomy - 1906 - 670 pages
...of the times; in other words, that the differences given in the Almanac are constant; this is seldom the case, but the error arising from the assumption...smaller the less the interval between the times in the Almanac. Hence those quantities which vary most irregularly are given for the smallest units of time;... | |
 | Nathaniel Bowditch - Nautical astronomy - 1916 - 912 pages
...of the times; hi other words, that the differences given in the Almanac are constant- this is seldom the case, but the error arising from the assumption...smaller the less the interval between the times in the Almanac. Hence those quantities which vary most irregularly are given for the smallest units of time;... | |
 | John William Norie, J. W. Saul - Nautical astronomy - 1917 - 642 pages
...quantities by simple interpolation ; that is, by assuming that the variations of the quantities are proportional to the differences of the times, which is equivalent to assuming that the variations given in the Almanac are constant. This, however, is never the case ; but the error arising... | |
 | Nathaniel Bowditch - 1920 - 840 pages
...of the times; in other words, that the differences given in the Almanac are constant: this is seldom the case, but the error arising from the assumption...will be smaller the less the interval between the tunes in the Almanac. Hence those quantities which vary most irregularly are given for the smallest... | |
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In the greater number of cases in practice, it is sufficiently exact to obtain the required quantities by simple interpolation ; that is, by assuming that the differences of the quantities are proportional to the differences of the times, which is equivalent... 