Re:Time Gun – Maps
by lb1lf on Friday October 23, 2020 @03:30PM
(#24872937)
-Surely if you are going through the trouble of setting your clock, you might as well do it accurately?
Also, as suggested by others (I should have thought of that!) - ships used chronometers to establish their longitude.
(At 56 degrees north, which Edinburgh lies on, a timing error of a second translates into 18 meters or so - an order or two of magnitude below the accuracy of even the best of celestial navigators - but still, might as well make the starting conditions as good as possible.)
Also, as suggested by others (I should have thought of that!) - ships used chronometers to establish their longitude.
(At 56 degrees north, which Edinburgh lies on, a timing error of a second translates into 18 meters or so - an order or two of magnitude below the accuracy of even the best of celestial navigators - but still, might as well make the starting conditions as good as possible.)