wormhole
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16 Nov 14
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A wormhole, officially known as an Einstein–Rosen bridge, is a hypothetical topological feature of spacetime that would fundamentally be a shortcut through spacetime. A wormhole is much like a tunnel with two ends, each in separate points in spacetime
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06 Nov 14
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hypothetical
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14 Oct 14
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11 Feb 14
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25 Nov 13
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dimensions. The parts of the wormhole could be higher-dimensional analogues for the parts of the curved 2D surface; for example, instead of mouths which are circular holes in a 2D plane, a real wormhole's mouths could be spheres in 3D space.) A wormhole is, in theory, much like a tunnel with two ends each in separate
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points in spacetime
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There is no observational evidence for wormholes, but on a theoretical level there are valid solutions to the equations of the theory of general relativity which contain wormholes. Because of its robust theoretical strength, a wormhole is also known as one of the great physics metaphors for teaching general relativity. The first type of wormhole solution discovered was the Schwarzschild
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31 Jan 12
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05 Dec 10
Donald WheelerLorentzian traversable wormholes would allow travel from one part of the universe to another part of that same universe very quickly or would allow travel from one universe to another.
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27 Aug 10
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bridges between areas of space
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Lorentzian wormholes known as Schwarzschild wormholes
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The theory of general relativity predicts that if traversable wormholes exist, they could allow time travel.
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accomplished by accelerating one end of the wormhole to a high velocity relative to the other, and then sometime later bringing it back
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accelerated wormhole mouth aging less than the stationary one as seen by an external observer, similar to what is seen in the twin paradox.
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accelerated mouth is brought back to the same region as the stationary mouth with the accelerated mouth's clock reading 2005 while the stationary mouth's clock read 2010.
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For example, consider two clocks at both mouths both showing the date as 2000.
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exit the stationary mouth when its clock also read 2005
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raveller who entered the accelerated mouth at this momen
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five years in the past.
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same region but
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03 Feb 10
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A wormhole could allow time travel.[4] This could be accomplished by accelerating one end of the wormhole to a high velocity relative to the other, and then sometime later bringing it back; relativistic time dilation would result in the accelerated wormhole mouth aging less than the stationary one as seen by an external observer, similar to what is seen in the twin paradox. However, time connects differently through the wormhole than outside it, so that synchronized clocks at each mouth will remain synchronized to someone traveling through the wormhole itself, no matter how the mouths move around. This means that anything which entered the accelerated wormhole mouth would exit the stationary one at a point in time prior to its entry.
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22 Dec 08
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26 Aug 08
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Add Sticky Note
The name "wormhole" comes from an analogy used to explain the phenomenon. If a worm is travelling over the skin of an apple, then the worm could take a shortcut to the opposite side of the apple's skin by burrowing through its center, rather than travelling the entire distance around, just as a wormhole traveler could take a shortcut to the opposite side of the universe through a topologically nontrivial tunnel.
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31 Jul 08
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12 Oct 07
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13 Jan 07
Public Stiky Notes
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