• Huxley (ed.), Relativity Theory, London: Chapman & Hall, ISBN 0-415-0288-9 Proper reference frame (flat spacetime) Comoving distance Rest frame v t e...
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  • A proper reference frame in the theory of relativity is a particular form of accelerated reference frame, that is, a reference frame in which an accelerated...
    72 KB (9,055 words) - 09:50, 31 October 2024
  • Thumbnail for Proper acceleration
    the spacelike components of the 4-velocity Proper reference frame (flat spacetime): accelerated reference frame in special relativity (Minkowski space) Fictitious...
    35 KB (4,444 words) - 14:09, 8 April 2025
  • overview of accelerations in flat spacetime, see Acceleration (special relativity) and Proper reference frame (flat spacetime). In this article, the speed...
    66 KB (7,773 words) - 18:05, 5 February 2025
  • Thumbnail for Spacetime
    spacetime interval between two events that are simultaneous in one's frame of reference. But events that are simultaneous in one frame of reference are...
    132 KB (19,765 words) - 09:00, 3 June 2025
  • accelerated frames in the context of special relativity, see Proper reference frame (flat spacetime). In such frames, effects arise which are analogous to homogeneous...
    59 KB (7,810 words) - 16:57, 1 April 2025
  • attributed to geodesic motion in spacetime. Due to Earth's rotation, its surface is not an inertial frame of reference. The Coriolis effect can deflect...
    62 KB (7,896 words) - 02:35, 25 May 2025
  • spacetimes are considered. It is, however, possible to define the proper distance along a path in any spacetime, curved or flat. In a flat spacetime,...
    8 KB (1,169 words) - 23:34, 3 September 2021
  • Thumbnail for Spacetime diagram
    A spacetime diagram is a graphical illustration of locations in space at various times, especially in the special theory of relativity. Spacetime diagrams...
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  • Thumbnail for Comoving and proper distances
    straight line is a geodesic in flat Minkowski spacetime), or the coordinate distance between the events in the inertial frame where they are simultaneous...
    20 KB (2,679 words) - 16:16, 28 May 2025
  • In physics, spherically symmetric spacetimes are commonly used to obtain analytic and numerical solutions to Einstein's field equations in the presence...
    10 KB (1,801 words) - 02:34, 30 May 2025
  • arbitrary submanifold. Mathematics portal Physics portal Proper reference frame (flat spacetime)#Proper coordinates or Fermi coordinates Geodesic normal coordinates...
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  • Thumbnail for Special relativity
    relative to a reference frame: it is a "point" in spacetime. Since the speed of light is constant in relativity irrespective of the reference frame, pulses...
    187 KB (25,060 words) - 17:11, 15 June 2025
  • Thumbnail for Born coordinates
    application of accelerations in flat spacetime, see Acceleration (special relativity) and proper reference frame (flat spacetime). From experience by inertial...
    38 KB (6,357 words) - 18:47, 29 December 2024
  • Thumbnail for Proper velocity
    In flat spacetime, proper velocity is the ratio between distance traveled relative to a reference map frame (used to define simultaneity) and proper time...
    21 KB (2,600 words) - 11:39, 1 June 2025
  • property of the surrounding spacetime. A simplified 1+1-dimensional version of the Taub–NUT spacetime is the Misner spacetime. McGraw-Hill Science & Technology...
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  • Thumbnail for Alcubierre drive
    previously flat spacetime and move away at effectively faster-than-light speed. The interior of the bubble is an inertial reference frame and inhabitants...
    45 KB (5,556 words) - 23:29, 23 May 2025
  • Thumbnail for Proper time
    measurement of proper distance rather than proper time. For lightlike paths, there exists no concept of proper time and it is undefined as the spacetime interval...
    22 KB (3,624 words) - 14:58, 8 February 2025
  • Frame-dragging is an effect on spacetime, predicted by Albert Einstein's general theory of relativity, that is due to non-static stationary distributions...
    32 KB (4,363 words) - 23:15, 12 May 2025
  • Thumbnail for Minkowski space
    The model helps show how a spacetime interval between any two events is independent of the inertial frame of reference in which they are recorded. Mathematician...
    79 KB (10,493 words) - 03:35, 7 June 2025
  • (1981). "Transformation from proper time on Earth to coordinate time in solar system barycentric space-time frame of reference". Celestial Mechanics. 23...
    53 KB (6,730 words) - 21:58, 19 June 2025
  • Thumbnail for Light cone
    single moment in time) and traveling in all directions, would take through spacetime. If one imagines the light confined to a two-dimensional plane, the light...
    10 KB (1,536 words) - 10:25, 27 November 2024
  • Thumbnail for Length contraction
    is measured to be shorter than its proper length, which is the length as measured in the object's own rest frame. It is also known as Lorentz contraction...
    40 KB (5,073 words) - 16:50, 10 May 2025
  • simplification is achieved in approximating the spacetime as having only small deviations from flat spacetime, leading to the linearized EFE. These equations...
    35 KB (5,077 words) - 15:22, 28 May 2025
  • speed of light in the reference frame of any coincident observer.[citation needed] However, it permits distortions in spacetime that allow an object to...
    67 KB (7,979 words) - 03:53, 25 May 2025
  • Kerr metric (redirect from Kerr spacetime)
    The Kerr metric or Kerr geometry describes the geometry of empty spacetime around a rotating uncharged axially symmetric black hole with a quasispherical...
    53 KB (6,963 words) - 21:02, 19 June 2025
  • moving relative to a particular frame of reference is defined by four coordinate functions xμ(τ), where μ is a spacetime index which takes the value 0 for...
    10 KB (1,711 words) - 01:50, 24 November 2024
  • World line (category Minkowski spacetime)
    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...
    25 KB (3,525 words) - 06:44, 25 May 2025
  • Thumbnail for Penrose diagram
    system of other spacetime diagrams for local asymptotically flat spacetime, it introduces a system of representing distant spacetime by shrinking or "triturando"...
    10 KB (1,198 words) - 19:49, 24 May 2025
  • paradox for application of the same formula to a rotating reference frame in flat spacetime. A common equation used to determine gravitational time dilation...
    17 KB (2,402 words) - 17:28, 8 June 2025