Global Information

# Spacetime information

In physics, spacetime is any mathematical model that fuses the three dimensions of space and the one dimension of time into a single four-dimensional continuum. Spacetime diagrams are useful in visualizing and understanding relativistic effects such as how different observers perceive where and when events occur.

Until the turn of the 20th century, the assumption had been that the three-dimensional geometry of the universe (its description in terms of locations, shapes, distances, and directions) was distinct from time (the measurement of when events occur within the universe). However, space and time took on new meanings with the Lorentz transformation and special theory of relativity.

In 1908, Hermann Minkowski presented a geometric interpretation of special relativity that fused time and the three spatial dimensions of space into a single four-dimensional continuum now known as Minkowski space. This interpretation proved vital to the general theory of relativity, wherein spacetime is curved by mass and energy.

## and 24 Related for: Spacetime information

Request time (Page generated in 0.5827 seconds.)

### Spacetime

Last Update:

In physics, spacetime is any mathematical model that fuses the three dimensions of space and the one dimension of time into a single four-dimensional...

Word Count : 27728

### General relativity

Last Update:

geometric property of space and time or four-dimensional spacetime. In particular, the curvature of spacetime is directly related to the energy and momentum of...

Word Count : 22669

### Spacetime diagram

Last Update:

A spacetime diagram is a graphical illustration of locations in space at various times, especially in the special theory of relativity. Spacetime diagrams...

Word Count : 6001

### Wormhole

Last Update:

A wormhole is a hypothetical structure connecting disparate points in spacetime, and is based on a special solution of the Einstein field equations. A...

Word Count : 6821

### Minkowski space

Last Update:

In mathematical physics, Minkowski space (or Minkowski spacetime) (/mɪŋˈkɔːfski, -ˈkɒf-/) combines inertial space and time manifolds with a non-inertial...

Word Count : 10530

### Stationary spacetime

Last Update:

equations, a spacetime is said to be stationary if it admits a Killing vector that is asymptotically timelike. In a stationary spacetime, the metric tensor...

Word Count : 1033

### Quantum foam

Last Update:

Quantum foam or spacetime foam is a theoretical quantum fluctuation of spacetime on very small scales due to quantum mechanics. The theory predicts that...

Word Count : 1011

### Spacetime topology

Last Update:

Spacetime topology is the topological structure of spacetime, a topic studied primarily in general relativity. This physical theory models gravitation...

Word Count : 771

### Quantum gravity

Last Update:

gravity as curvature of spacetime: in the slogan of John Archibald Wheeler, "Spacetime tells matter how to move; matter tells spacetime how to curve." On the...

Word Count : 6664

### Gravitational singularity

Last Update:

gravitational singularity, spacetime singularity or simply singularity is a condition in which gravity is predicted to be so intense that spacetime itself would break...

Word Count : 2893

### Einstein field equations

Last Update:

related the local spacetime curvature (expressed by the Einstein tensor) with the local energy, momentum and stress within that spacetime (expressed by the...

Word Count : 5080

### Special relativity

Last Update:

Hermann Minkowski's papers on spacetime. The theory is "special" in that it only applies in the special case where the spacetime is "flat", that is, where...

Word Count : 21395

### Spacetime symmetries

Last Update:

Spacetime symmetries are features of spacetime that can be described as exhibiting some form of symmetry. The role of symmetry in physics is important...

Word Count : 1487

### Quantum spacetime

Last Update:

mathematical physics, the concept of quantum spacetime is a generalization of the usual concept of spacetime in which some variables that ordinarily commute...

Word Count : 3192

### Semantic spacetime

Last Update:

Semantic spacetime is a theoretical framework for agent-based modelling of spacetime, based on Promise Theory. It is relevant both as a model of computer...

Word Count : 1326

### Quantum field theory in curved spacetime

Last Update:

field theory in curved spacetime (QFTCS) is an extension of quantum field theory from Minkowski spacetime to a general curved spacetime. This theory uses a...

Word Count : 1936

### Gravity

Last Update:

1915), which describes gravity not as a force, but as the curvature of spacetime, caused by the uneven distribution of mass, and causing masses to move...

Word Count : 7436

### Static spacetime

Last Update:

relativity, a spacetime is said to be static if it does not change over time and is also irrotational. It is a special case of a stationary spacetime, which...

Word Count : 458

### List of spacetimes

Last Update:

Lemaître–Tolman spacetime pp-wave spacetime Alcubierre spacetime Einstein static universe spacetime Ellis wormhole spacetime Gödel spacetime Taub–NUT spacetime Kasner...

Word Count : 830

### Time travel

Last Update:

it, such as a rotating black hole. Traveling to an arbitrary point in spacetime has very limited support in theoretical physics, and is usually connected...

Word Count : 8565

### Theory of relativity

Last Update:

primarily by Isaac Newton. It introduced concepts including 4-dimensional spacetime as a unified entity of space and time, relativity of simultaneity, kinematic...

Word Count : 2956

### Black hole

Last Update:

A black hole is a region of spacetime where gravity is so strong that nothing, including light and other electromagnetic waves, has enough energy to escape...

Word Count : 18546

### Space

Last Update:

with time, to be part of a boundless four-dimensional continuum known as spacetime. The concept of space is considered to be of fundamental importance to...

Word Count : 4333

### Penrose diagram

Last Update:

different points in spacetime through a conformal treatment of infinity. It is an extension (suitable for the curved spacetimes of e.g. general relativity)...

Word Count : 1184