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mass–energy equivalence

physical law relating mass to energy
Intangible mathematical_concept Q35875
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Summary

mass–energy equivalence is a mathematical concept[1]. It ranks in the top 0.4% of mathematical concept entities by monthly Wikipedia readership (13,998 views/month, #4 of 1,007).[2]

Key Facts

  • Discoverer or inventor: Albert Einstein[3]
  • Instance of: concept in physics[4]
  • Has use: nuclear weapon[5], nuclear power[6]
  • Commons category: Einstein formula[7]
  • Time of discovery or invention: November 21, 1905[8]
  • Facet of: special relativity[9]
  • Stack Exchange tag: https://physics.stackexchange.com/tags/mass-energy[10]
  • Manifestation of: theory of relativity[11]
  • On focus list of Wikimedia project: Wikipedia:Vital articles/Level/4[12]
  • Maintained by WikiProject: WikiProject Physics[13]

Why It Matters

mass–energy equivalence has Wikipedia articles in 30 language editions, a strong signal of global cultural recognition.[14] It is known by 113 alternative names across languages and contexts.[15]

Related Entities

Albert Einstein

References

Programmatic citations — every numbered marker resolves to a verifiable graph row below.

Direct Wikidata claims

  1. [4] ↑ . wikidata.org.
  2. [3] ↑ . wikidata.org.
  3. [5] ↑ . wikidata.org.
  4. [6] ↑ . wikidata.org.
  5. [7] ↑ . wikidata.org.
  6. [8] ↑ . wikidata.org.
  7. [9] ↑ . wikidata.org.
  8. [10] ↑ . wikidata.org.
  9. [11] ↑ . britannica.com. britannica.com. Provenance: wikidata.org.
  10. [12] ↑ . wikidata.org.
  11. [13] ↑ . wikidata.org.

Class ancestry

  1. [1] ↑ . Wikidata. wikidata.org.

Aggregate / graph-position facts

  1. [2] ↑ . Wikimedia Foundation. dumps.wikimedia.org.
  2. [14] ↑ . Wikidata sitelinks. wikidata.org.
  3. [15] ↑ . Wikidata aliases. wikidata.org.

📑 Cite this page

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). mass–energy equivalence. Retrieved October 13, 2026, from https://4ort.xyz/entity/mass-energy-equivalence
MLA “mass–energy equivalence.” 4ort.xyz Knowledge Graph, 4ort.xyz, 13 Oct. 2026, https://4ort.xyz/entity/mass-energy-equivalence.
BibTeX @misc{4ortxyz_mass-energy-equivalence_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{mass–energy equivalence}}, year = {2026}, url = {https://4ort.xyz/entity/mass-energy-equivalence}, note = {Accessed: 2026-10-13}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): mass–energy equivalence — https://4ort.xyz/entity/mass-energy-equivalence (retrieved 2026-10-13)

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Edit History

Rolling log of changes to this entity's Wikidata record. Values shown reflect the current state of each edited property — follow the history link to see the precise diff for any edit.

  1. 13w ago · Nyuhn · 2026-07-10 view diff on Wikidata ↗
    P14541 → 1nQwjX
    "/* wbeditentity-update:0| */ QuickStatements 3.0 [[:toollabs:qs-dev/batch/40849|batch #40849]]: ZGBK ID"
  2. 18w ago · Taylor 49 · 2026-06-08 view diff on Wikidata ↗
    Schematic → E=mc²-explication.svg, E=mc²-explication mk.svg, E=mc²-explication-lv.svg +1
    "/* wbremoveclaims-remove:1| */ Schematic: E=mc²-explication-lv.svg"
  3. 18w ago · Bjankuloski06 · 2026-06-07 view diff on Wikidata ↗
    On focus list of wikimedia project → Wikipedia:Vital articles/Level/4
    Facet of → special relativity
    Discoverer or inventor → Albert Einstein
    Aliases → —
    + 6 other properties edited (see Wikidata diff for full list)
    "/* wbremoveclaims-remove:1| */ Schematic: E=mc²-explication mk.svg"
Live feed via Wikidata EventStreams. New edits appear within minutes of being made on Wikidata.