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- https://phys.libretexts.org/Bookshelves/Conceptual_Physics/Introduction_to_Physics_(Park)/05%3A_Unit_4-_Modern_Physics_-_Quantum_Mechanics_Special_Relativity_and_Nuclear_and_Particle_Physics/13%3A_Special_Relativity/13.04%3A_Length_ContractionAll observers agree upon relative speed. Distance depends on an observer’s motion. Proper length is the distance between two points measured by an observer who is at rest relative to both of the point...All observers agree upon relative speed. Distance depends on an observer’s motion. Proper length is the distance between two points measured by an observer who is at rest relative to both of the points. Earth-bound observers measure proper length when measuring the distance between two points that are stationary relative to the Earth. Length contraction is the shortening of the measured length of an object moving relative to the observer’s frame.
- https://phys.libretexts.org/Bookshelves/University_Physics/University_Physics_(OpenStax)/University_Physics_III_-_Optics_and_Modern_Physics_(OpenStax)/05%3A__Relativity/5.05%3A_Length_ContractionLength contraction is the decrease in observed length of an object from its proper length L0 to length L when its length is observed in a reference frame where it is traveling at speed v. The pro...Length contraction is the decrease in observed length of an object from its proper length L0 to length L when its length is observed in a reference frame where it is traveling at speed v. The proper length is the longest measurement of any length interval. Any observer who is moving relative to the system being observed measures a length shorter than the proper length.
- https://phys.libretexts.org/Courses/Skidmore_College/Introduction_to_General_Relativity/01%3A_Special_Relativity/1.02%3A_The_Spacetime_IntervalIn Newtonian mechanics, the length of an object is invariant. That is, if you use a different coordinate system to mark locations, the result you get for the length does not change. In Special Relativ...In Newtonian mechanics, the length of an object is invariant. That is, if you use a different coordinate system to mark locations, the result you get for the length does not change. In Special Relativity, however, it is a combination of distance and time that is invariant from one coordinate system to another. We call this the spacetime interval.
- https://phys.libretexts.org/Bookshelves/Classical_Mechanics/Variational_Principles_in_Classical_Mechanics_(Cline)/17%3A_Relativistic_Mechanics/17.03%3A_Special_Theory_of_RelativityEinstein's Special Theory of Relativity.
- https://phys.libretexts.org/Bookshelves/Classical_Mechanics/Classical_Mechanics_(Tatum)/15%3A_Special_Relativity/15.10%3A_Time_DilationThe interval s between two events is clearly independent of the orientation any reference frames, and is the same when referred to two reference frames that may be inclined to each other. But the co...The interval s between two events is clearly independent of the orientation any reference frames, and is the same when referred to two reference frames that may be inclined to each other. But the components of the vector joining two events, or their projections on to the time axis or a space axis are not at all expected to be equal.
- https://phys.libretexts.org/Courses/Muhlenberg_College/MC%3A_Physics_121_-_General_Physics_I/05%3A__Relativity/5.05%3A_Length_ContractionLength contraction is the decrease in observed length of an object from its proper length L0 to length L when its length is observed in a reference frame where it is traveling at speed v. The pro...Length contraction is the decrease in observed length of an object from its proper length L0 to length L when its length is observed in a reference frame where it is traveling at speed v. The proper length is the longest measurement of any length interval. Any observer who is moving relative to the system being observed measures a length shorter than the proper length.
- https://phys.libretexts.org/Courses/Muhlenberg_College/MC_%3A_Physics_213_-_Modern_Physics/01%3A__Relativity/1.05%3A_Length_ContractionLength contraction is the decrease in observed length of an object from its proper length L0 to length L when its length is observed in a reference frame where it is traveling at speed v. The pro...Length contraction is the decrease in observed length of an object from its proper length L0 to length L when its length is observed in a reference frame where it is traveling at speed v. The proper length is the longest measurement of any length interval. Any observer who is moving relative to the system being observed measures a length shorter than the proper length.
- https://phys.libretexts.org/Bookshelves/College_Physics/College_Physics_1e_(OpenStax)/28%3A_Special_Relativity/28.03%3A_Length_ContractionAll observers agree upon relative speed. Distance depends on an observer’s motion. Proper length is the distance between two points measured by an observer who is at rest relative to both of the point...All observers agree upon relative speed. Distance depends on an observer’s motion. Proper length is the distance between two points measured by an observer who is at rest relative to both of the points. Earth-bound observers measure proper length when measuring the distance between two points that are stationary relative to the Earth. Length contraction is the shortening of the measured length of an object moving relative to the observer’s frame.
