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Record 1,  Textual support,  English

Record number: 1, Textual support number: 1 CONT

(...) Maskeline tested a means of finding longitude as sea called the method of lunar distances. This involved measuring the Moon's position against the background of stars (the lunar distances were the star's distances from the Moon). The Moon's position in its orbit acted as a standard clock in the sky, to give a universal time scale (like modern Greenwich time) that could be read off from tables. Comparing this standard time with the local time revealed the observer's longitude.  1, record 1, English, - method%20of%20lunar%20distances

Record 1,  Textual support,  French

Record number: 1, Textual support number: 1 DEF

(...) méthode qui permet de trouver l'heure de Greenwich, au moment de l'observation, pour que, par différence avec l'heure locale, on puisse déduire la longitude du lieu.  1, record 1, French, - m%C3%A9thode%20des%20distances%20lunaires

Record 1,  Textual support,  Spanish