The Airbus A330 that I fly across the Atlantic to any of several European cities is equipped with onboard navigation computers that tell us in the cockpit exactly where we are at any time. But when ...

When Adrienne Cahalan first sailed the Rolex Sydney Hobart Yacht Race back in 1984, navigation meant paper charts, dividers and a constant watch on the sky. “There was no GPS,” Cahalan recalls of the ...

I RECENTLY made the attempt to attach one of the prism forms of binocular to a sextant in place of the ordinary telescope, and it seemed that such an adaptation would materially increase the ...

aDepartment of Urology, Peking University First Hospital, Beijing, China bInstitute of Urology, Peking University, Beijing, China cNational Urological Cancer Center, Beijing, China dDepartment of ...

World War II was marked by intense, lengthy, bombing campaigns such as the Blitz, the German offensive against the city of London. Famously, one British response was the blackout, a defensive campaign ...

The public is invited to a free presentation on “Historic Ocean Navigation” at 3:00 p.m. on Sunday, Oct. 19. Presenter Lance Bebee explains how stars and sextants were used to navigate the oceans.

A sextant is an instrument used for measuring the angle between two visible objects. Both horizontal and vertical angles can be measured using a sextant. It contains two mirrors which are arranged in ...

A sextant is the antique version of a GPS. And in his basement workshop, Ridge White is one of the few people in the world still servicing and repairing the instruments. “Sarah,” a replica of an ...

When Physicist K. G. Jansky of Bell laboratories discovered in 1932 that he could pick up radio waves from objects in space, he founded the exciting science of radio astronomy. As the sailors of ...

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To continue reading this content, please enable JavaScript in your browser settings and refresh this page. Preview this article 1 min The company previously raised ...