line period
41Orbital period — For the music album, see Orbital Period (album). The orbital period is the time taken for a given object to make one complete orbit about another object. When mentioned without further qualification in astronomy this refers to the sidereal period …
42Muromachi period — Muromachi redirects here. For other uses, see Muromachi (disambiguation). History of Japan Kinkaku ji Paleolithic 35,000–14,000 BC Jōmon period 14,000–300 BC Yayoi period 300 B …
43Great Eastern Main Line — GEML redirects here. For the Spanish airport, see Melilla Airport. Great Eastern Main Line National Express East Anglia class 360 at Marks Tey. Overview …
44Siegfried Line — The original Siegfried line ( Siegfriedstellung ) was a line of defensive forts and tank defenses built by Germany as a section of the Hindenburg Line 1916 1917 in northern France during World War I. However, in English, Siegfried line more… …
45Contour line — This article is about lines of equal value in maps and diagrams. For more meanings of the word contour , see Contour (disambiguation). The bottom part of the diagram shows some contour lines with a straight line running through the location of… …
46Glossop Line — Overview Type Heavy rail System National Rail Status …
47405-line television system — The 405 line monochrome analogue television broadcasting system was the first fully electronic television system to be used in regular broadcasting. It was introduced with the BBC Television Service in 1936, suspended for the duration of World… …
48Mid-Cheshire Line — Northern Rail DMUs at Chester, used on Mid Cheshire Line services. Overview System National Rail …
49Tertiary Period — Interval of geologic time, 65–1. 8 million years ago. It constitutes the first of the two periods of the Cenozoic Era, the second being the Quaternary. The Tertiary has five subdivisions: (from oldest to youngest) the Paleocene, Eocene, Oligocene …
50Classical period (music) — Periods of Western art music Early Medieval   (500–1400) Renaissance (1400–1600) Baroque (1600–1760) Common practice Baroque (1600–1760) …
