world line - ορισμός. Τι είναι το world line
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Τι (ποιος) είναι world line - ορισμός

UNIQUE PATH OF AN OBJECT AS IT TRAVELS THROUGH 4-DIMENSIONAL SPACETIME
World lines; World volume; World-line; 4D Trajectory; World tube; Worldlines; Worldline
  • The momentarily co-moving inertial frames along the trajectory ("world line") of a rapidly accelerating observer (center). The vertical direction indicates time, while the horizontal indicates distance, the dashed line is the [[spacetime]] of the observer. The small dots are specific events in spacetime. Note how the momentarily co-moving inertial frame changes when the observer accelerates.

world line         
¦ noun Physics a curve in space-time joining the positions of a particle throughout its existence.
World line         
The world line (or worldline) of an object is the path that an object traces in 4-dimensional spacetime. It is an important concept in modern physics, and particularly theoretical physics.
IND World's Fair Line         
  • The [[Jamaica Yard]], which connected the World's Fair and Queens Boulevard Lines.
  • A portion of a [[New York City Subway map]] from 1939, showing the World's Fair Line as a spur heading northwest off the Queens Boulevard Line. The Queens Boulevard Line is the red line stretching roughly horizontally across the map's center.
TEMPORARY BRANCH OF THE INDEPENDENT SUBWAY SYSTEM (IND) SERVING THE 1939 NEW YORK WORLD'S FAIR IN QUEENS, NEW YORK CITY
World's Fair Railroad; World's Fair Line; IND World's Fair Railroad; World's Fair station (IND World's Fair Line); World's Fair station; World's Fair (IND World's Fair Line)
train on the IND World's Fair Line . This is one of the few colored pictures of the line in existence.

Βικιπαίδεια

World line

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, and particularly theoretical physics.

The concept of a "world line" is distinguished from concepts such as an "orbit" or a "trajectory" (e.g., a planet's orbit in space or the trajectory of a car on a road) by inclusion of the dimension time, and typically encompasses a large area of spacetime wherein paths which are straight perceptually are rendered as curves in space-time to show their (relatively) more absolute position states—to reveal the nature of special relativity or gravitational interactions.

The idea of world lines was originated by physicists and was pioneered by Hermann Minkowski. The term is now used most often in the context of relativity theories (i.e., special relativity and general relativity).