Schwarzschild radius

distance from a massive body where the escape velocity equals the speed of light
Class type of: radius, physical quantity Q72755

Facts

7 properties
Defining formula
r_s = \frac{2 M G}{c^2}
ISQ dimension
\mathsf{L}
Maintained by WikiProject
WikiProject Mathematics[6]
On focus list of Wikimedia project
Wikipedia:Vital articles/Level/4[5]
Said to be the same as
event horizon[4]
🏷️ Also known as
en gravitational radius en Schwarzschild radius ar نصف قطر شفارتزشيلد cs Schwarzschildův poloměr da Schwarzschildradius da Schwarzschild-radius de Schwarzschild-Radius de Gravitationsradius de Schwarzschildhorizont el ακτίνα Σβάρτσιλντ es radio de Schwarzschild fa شعاع شوارتزشیلد fi Schwarzschildin säde fr rayon de Schwarzschild he רדיוס כבידתי he רדיוס שווארצשילד he רדיוס שוורצשילד hu Schwarzschild-sugár it raggio di Schwarzschild ja シュヴァルツシルト半径
🔖 Identifiers · 16
OpenAlex ID
C115304011
Image (Wikimedia Commons)
Black hole details.svg ↗
Elhuyar ZTH ID
136532
Encyclopædia Britannica Online ID
science/Schwarzschild-radius
Freebase ID
/m/01d74g
Gran Enciclopèdia Catalana ID
radi-de-schwarzschild
Gran Enciclopèdia Catalana ID (former scheme)
0061480
Great Norwegian Encyclopedia ID
Schwarzschild-radius
Great Russian Encyclopedia portal ID
gravitatsionnyi-radius-b3f40a
JSTOR topic ID (archived)
schwarzschild-radius
Microsoft Academic ID (discontinued)
115304011
Show all 16 identifiers +4
Quora topic ID
Schwarzschild-Radius
Unified Astronomy Thesaurus ID
1435
Wolfram Language quantity ID
SchwarzschildRadius

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🔗 Connections
Subclass of 2
Maintained by WikiProject 1
On focus list of Wikimedia project 1
Said to be the same as 1
← Said to be the same as 1
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Summary

Schwarzschild radius is a type of radius[1] and physical quantity[2].

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Use these citations when quoting this entity in research, articles, AI prompts, or wherever provenance matters. We aggregate Wikidata + Wikipedia + authoritative open-data sources; the stitched, scored, cross-referenced view is what 4ort.xyz contributes.

APA 4ort.xyz Knowledge Graph. (2026). Schwarzschild radius. Retrieved November 12, 2026, from https://4ort.xyz/entity/schwarzschild-radius
MLA “Schwarzschild radius.” 4ort.xyz Knowledge Graph, 4ort.xyz, 12 Nov. 2026, https://4ort.xyz/entity/schwarzschild-radius.
BibTeX @misc{4ortxyz_schwarzschild-radius_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{Schwarzschild radius}}, year = {2026}, url = {https://4ort.xyz/entity/schwarzschild-radius}, note = {Accessed: 2026-11-12}}
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