In this work, since the year 1 863, the difference given for a unit of time is always the difference belonging to the instant of Greenwich time against which it stands, and it expresses, therefore, the rate at which the function is changing at that instant.... Spherical astronomy - Page 741874Full view - About this book
| Astronomical instruments - 1864
...second differences to be constant and the third differences to be zero. When the American Ephemeris **is employed, we can take the second differences into...uniformly, so that its value for any intermediate time** may be fonnd by simple interpolation, using the second differences as first differences. K"ow, in computing... | |
| William Chauvenet - 1864
...second differences to be constant and the third differences to be zero. When the American Ephemeris **is employed, we can take the second differences into...uniformly, so that its value for any intermediate time** may be found by simple interpolation, using the second differences as first difi ferences. Now, in... | |
| Thomas Liddell Ainsley - 1875 - 396 pages
...take the second differences into account in a very simple manner. In this work, since the year 1863, **the difference given for a unit of time is always...difference being constant) it varies uniformly, so that** ita •value for any intermediate time may be found by simple interpolation, using the second differences... | |
| Thomas Liddell Ainsley - 1880
...take the second differences into account in a very simple manner. In this work, since the year 1 863, **the difference given for a unit of time is always...uniformly, so that its value for any intermediate time** may be found by simple interpolation, using the second differences as first differences. Now, in computing... | |
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