TimesMachine is an exclusive benefit for home delivery and digital subscribers. About the Archive This is a digitized version of an article from The Times’s print archive, before the start of online ...
Special to The New York Times. TimesMachine is an exclusive benefit for home delivery and digital subscribers. About the Archive This is a digitized version of an article from The Times’s print ...
COUNCIL BLUFFS, Iowa -- If you were Capt. William Clark, you would use a compass, sextant and chronometer to find the Lewis & Clark Passport Education Program presented throughout the summer at map ...
There's no way around it: Celestial navigation using a sextant is a complex and involved process that involves a fair amount of calculating, correcting, referring to tables, knowledge of the heavens ...
In the days before GPS, the accuracy of a ship’s chronometer might be a matter of life and death. Navigators used them to determine longitude by measuring the local time via a sextant and a star map, ...
Loran, a Far-Flung Mesh of Radio Position-Lines Marking the World Air and Sea Lanes like Numbered Streets and Avenues, Bids Fair to Supplant the Venerable Chronometer and Sextant with a Cathode-Ray ...
A new Digital Sextant has been engineered to provide back-up navigation in the event of failure or malicious adjustment of the GPS system, says manufacturer ScanjetPSM. The Digital Sextant provides a ...
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