...its proportional logarithm from Table XXII. The difference between these two proportional logarithms will be the proportional logarithm of a portion of time, to be added to the time standing over the first distance in the Nautical Almanac, and the sum will be the mean time of...

...the Moon. The columns headed " PL of diff." contain the proportional logarithms of the differences of the distances at intervals of three hours, which...Greenwich mean time corresponding to the given distance. zK a If the distance between the Moon and a Star increased or decreased uniformly, the Greenwich times...

...the Moon. The columns headed " PL of diff." contain the proportional logarithms of the differences of the distances at intervals of three hours, which...nearest preceding distance, to obtain the approximate If the distance between the Moon and a Star increased or decreased uniformly, the Greenwich times corresponding...

...order of time, the given distance, " and take the difference between it and the " given distance ; from the proportional logarithm " of this difference,...to the " nearest preceding distance, to obtain the ap" proximate Greenwich mean time corresponding " to the given distance. " If the distance between...

...ephemeris ; from the PL of this difference subtract the PL in the ephemeris ; the remainder will be the PL of a portion of time to be added to the hour answering...Greenwich mean time corresponding to the given distance." When selecting a suitable object for observation, it must be remembered that those objects are most...

...this difference subtract the proportional logarithm standing opposite to the said nearest distance in the Ephemeris; the remainder will be the proportional...time to be added to the hour answering to the nearest distance, to obtain the approximate Greenwich mean time corresponding to the given distance. If the...