Showing papers on "Marine chronometer published in 1997"
Book•
01 Jan 1997
TL;DR: The history of the Royal Observatory, Greenwich has been revised to coincide with the Millenium as mentioned in this paper, which covers the importance of longitude for navigation and traces the history of Greenwich Time, the basis of universal timekeeping.
Abstract: The history of the Royal Observatory, Greenwich has been revised to coincide with the Millenium. Color illustrations and updated text tell the story of Greenwich from its foundations in 1676 to its present status as Longitude 0, the world's Prime Meridian for measuring longitude and time. The book covers the importance of longitude for navigation and traces the history of Greenwich Time, the basis of universal time-keeping. The book is co-published with the National Maritime Museum, where Derek Howse was the former Head of Navigation and Astronomy.
41 citations
Patent•
05 Sep 1997
TL;DR: In this paper, an automatic electronic unit supports a chronometer (2) fitted with at least two control pushbuttons (8, 9) and a control box (1) with a location (12) in which the chronometer is placed.
Abstract: Electronic automatic unit can be used as a single unit or as a group or units. Automatic electronic unit supports chronometer (2) fitted with at least two control pushbuttons (8,9), and has a control box (1) with a location (12) in which the chronometer is placed. The control box has input connections (30,40,36,42) which receive electrical signals from sensors for events to be timed by the chronometer, and has also chronometer controller (51,52) which acts on the controls (8,9) of the chronometer as a function of the sensor input signals and timing controls (62,63).