General relativity
General relativity, also known as the general theory of relativity, and as Einstein's theory of gravity, is the geometric theory of gravitation published by Albert Einstein in May 1916 and is the accepted description of the gravitation of macroscopic object…
Also known as: GR
At a glance
Key signals
23% cross fields · reaches 2 more
- Astronomy
- Physics
- Relativity
- Explanation
- Examples
- Misconception
- Sourced relations 2
- Attribution
Dependencies
What this concept builds on and what it makes possible — derived from the atlas’s dependency, causal and structural relations, not from every related edge.
Foundations · builds on
General relativitydepends onMetric tensorEstablished
General relativity depends on Metric tensor.
General relativityis derived fromSpecial relativityEstablished
General relativity is derived from Special relativity.
Enables · leads to
Frame draggingis derived fromGeneral relativityEstablished
Rotation twists spacetime.
Mechanism: General relativity predicts a rotating mass drags spacetime around with it — confirmed by Gravity Probe B.
Friedmann equationsis derived fromGeneral relativityEstablished
They come from Einstein's equations.
Mechanism: The Friedmann equations are general relativity applied to a uniform, expanding universe.
Gravitational lensdepends onGeneral relativityEstablished
gravitational lens depends on general relativity.
Mechanism: Mass warps spacetime, so light bends as it passes a galaxy — general relativity turns gravity into a lens.
- Wikipedia (English & German editions) verifiedmoderate evidence
Gravitational time dilationis derived fromGeneral relativityEstablished
Open Gravitational time dilation →
Clocks slow in gravity.
Mechanism: General relativity predicts clocks run slower deeper in a gravitational well — a correction GPS must apply.
System context
Big Bangis part ofGeneral relativityEstablished
Big Bang is part of general relativity.
Mechanism: The Big Bang model follows from general relativity: applying Einstein's equations to the whole universe implies it began small, dense and expanding.
- Wikidata verifiedmoderate evidence
Einstein field equationsis part ofGeneral relativityEstablished
Open Einstein field equations →
Einstein field equations is a part of General relativity.
Equivalence principleis part ofGeneral relativityEstablished
Gravity equals acceleration.
Mechanism: The equivalence principle — that gravity and acceleration feel the same — is the seed of general relativity.
Spacetime curvatureis part ofGeneral relativityEstablished
Curvature is gravity.
Mechanism: General relativity recasts gravity as the curvature of spacetime by mass and energy.
Structural role & consequence
Interpreted from the current atlas graph — what the connections mean, not just how many there are.
Removing this node severs the only sampled structural route between Friedmann equations and Gravitational lensing — a non-redundant bridge here.
structural · Structural removal simulation — not a historical or causal counterfactual.
Currently dark in the atlas: 13 of 13 of its relations lack claim-level evidence.
atlas representation · Describes the current Thinking OS representation, not the state of the world.
Builds on 2 foundations (requires / depends-on / derived-from / emerges-from).
structural · Structural graph analysis — not a claim of importance, causation or history.
Structural neighbourhood: 13 → 34 → 87 concepts reachable within 3 hops.
structural · Structural reach — being reachable is not the same as being understood.
cross-field
10 within-field, 3 cross-field
Strengths & constraints
Constraints
- Evidence coverage currently thin in the atlas — few of its relationships carry claim-level evidence. atlas representation
- Non-redundant bridge — removing it severs a sampled route between neighbouring clusters. structural
Conditions
- Its dependency reading rests on 2 foundation relations. structural
- Read structurally — most of its relationships carry no external evidence yet, so claims here are graph-derived. structural
Dependency radial
What this concept builds on (left) and what it makes possible (right) — derived from dependency and causal relations.
What builds on this
1 concept build on this directly, 1 in total, across 1 discipline.
Structural downstream reach along dependency edges — not a claim of historical necessity.
Seen through each discipline
How this concept sits in each of its fields — derived from its real connections in the graph, not asserted.
Through this lens it connects to Big Bang and Gravitational lens.
Through this lens it connects to Special relativity, Spacetime curvature, String theory and Gravitational time dilation.
Through this lens it connects to Special relativity, Spacetime curvature, Einstein field equations and Metric tensor.
Technical detail
General relativity describes gravity not as a force but as the curvature of four-dimensional spacetime by mass and energy, encoded in the Einstein field equations Gμν = 8πG·Tμν. Freely falling bodies follow geodesics of this curved geometry. Its predictions — light bending, gravitational time dilation, the perihelion precession of Mercury, and gravitational waves — have all been confirmed to high precision.
Formula
Relate spacetime curvature to the energy and momentum of matter.
G_{\mu\nu}— Einstein (curvature) tensorT_{\mu\nu}— stress–energy tensor\Lambda— cosmological constant
Source: Die Grundlage der allgemeinen Relativitätstheorie
Key dates
- 1915FormalizationEinstein presents the field equations of general relativity to the Prussian Academy. — Die Grundlage der allgemeinen Relativitätstheorie
What it looks like
Concrete cases that make this idea recognisable in the real world.
Why GPS must correct for relativity
Clocks on GPS satellites run faster than on the ground because spacetime is less curved up there; without the general-relativistic correction, positions would drift by kilometres per day.
Check yourself
A quick check against a common misconception. Nothing is scored — picking the tempting-but-wrong answer just flags an idea worth revisiting.
Which statement is correct?
Gravity is a force that reaches out and pulls masses together.
In general relativity gravity is not a force but the curvature of spacetime by mass and energy; freely falling bodies simply follow the straightest possible paths (geodesics) through that curved geometry.
Related ideas to explore
Concepts that look related but are not yet connected here — candidates for a connection to reason about, not established links.
This idea also appears in…
The same structure shows up in other disciplines. These are real recurrences drawn from the graph — a starting point for asking “what carries over, and what changes?”
Symmetry & invariance7 disciplines · 5 concepts
Concepts
shares a mental model
shares a mental model
shares a mental model
shares a mental model
- CrystallizationChemistry
shares a mental model
- Friedmann equationsCosmology
crosses a discipline boundary
Mental models at work here
- Connects 13 other ideas across 3 disciplines.
- A cross-disciplinary bridge — its connections reach into 2 other fields.
- Most of its connections are of the “Dependency” kind.
- It exercises 1 reusable thinking pattern.
Derived from the graph’s real structure — observations, not a score.
Sources
- Wikipedia (English & German editions) verifiedmoderate evidence
- Wikidata verifiedmoderate evidence