The world line (or worldline) of an object is the path that an object traces in 4-dimensional spacetime. It is an important concept of modern physics,...

shut down the line while the new transportation hub at the World Trade Center was under construction. The Governor's decision to keep the line open increased...

In geometry, a line segment is a part of a straight line that is bounded by two distinct end points, and contains every point on the line that is between...

In Euclidean geometry, the intersection of a line and a line can be the empty set, a point, or another line. Distinguishing these cases and finding the...

The Blue Line is a demarcation line dividing Lebanon from Israel and the Golan Heights. It was published by the United Nations on 7 June 2000 for the purposes...

object's location through time traces out a line or curve on a spacetime diagram, referred to as the object's world line. Each point in a spacetime diagram represents...

The IND World's Fair Line, officially the World's Fair Railroad, was a temporary branch of the Independent Subway System (IND) serving the 1939 New York...

Arkhangelsk–Astrakhan line, or A–A line for short, was the military goal of Operation Barbarossa. It is also known as the Volga–Arkhangelsk line, as well as (more...

timelike world line is defined as the time as measured by a clock following that line. The proper time interval between two events on a world line is the...

Look up Line, line, or líne in Wiktionary, the free dictionary. Line most often refers to: Line (geometry), object that has zero thickness and curvature...