"mass-energy" meaning in English

See mass-energy in All languages combined, or Wiktionary

Adjective

Head templates: {{en-adj|-}} mass-energy (not comparable)
  1. mass-to-energy Tags: not-comparable
    Sense id: en-mass-energy-en-adj-l~kIVIMT

Noun

Forms: mass-energies [plural]
Head templates: {{en-noun|~}} mass-energy (countable and uncountable, plural mass-energies)
  1. (physics) Mass and energy as a unified concept. Tags: countable, uncountable Categories (topical): Physics
    Sense id: en-mass-energy-en-noun-Mt8cxuqM Topics: natural-sciences, physical-sciences, physics
  2. (also spelled mass energy) The energy associated with any given mass according to special relativity, E = mc². Tags: countable, uncountable Categories (topical): Relativity
    Sense id: en-mass-energy-en-noun-rNVxR18u Disambiguation of Relativity: 1 42 56 Categories (other): English entries with incorrect language header, English entries with topic categories using raw markup, English terms with non-redundant non-automated sortkeys Disambiguation of English entries with incorrect language header: 1 26 74 Disambiguation of English entries with topic categories using raw markup: 1 19 81 Disambiguation of English terms with non-redundant non-automated sortkeys: 1 20 78
The following are not (yet) sense-disambiguated
Related terms: Einstein energy, relativistic mass

Inflected forms

Download JSON data for mass-energy meaning in English (3.2kB)

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        {
          "text": "Whereas in classical physics mass and energy are distinct concepts, on relativistic scales, they become indistinguishable and are replaced by mass-energy.",
          "type": "example"
        },
        {
          "text": "In higher-energy physics, mass and energy eventually become meaningless as individual concepts; a particle's so-called \"mass\" is actually mass-energy and is often given equivalently in units of either mass (GeV/c²) or energy (GeV).",
          "type": "example"
        },
        {
          "text": "For equations normalized with Planck units, the quantities of mass and energy become numerically identical, revealing their true nature as mass-energy.",
          "type": "example"
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      "qualifier": "also spelled mass energy",
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        "(also spelled mass energy) The energy associated with any given mass according to special relativity, E = mc²."
      ],
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          "text": "Mass-energy conversion occurs during nuclear fusion and fission.",
          "type": "example"
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      "id": "en-mass-energy-en-adj-l~kIVIMT",
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          "text": "In higher-energy physics, mass and energy eventually become meaningless as individual concepts; a particle's so-called \"mass\" is actually mass-energy and is often given equivalently in units of either mass (GeV/c²) or energy (GeV).",
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        },
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          "text": "For equations normalized with Planck units, the quantities of mass and energy become numerically identical, revealing their true nature as mass-energy.",
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        "(also spelled mass energy) The energy associated with any given mass according to special relativity, E = mc²."
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  "word": "mass-energy"
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This page is a part of the kaikki.org machine-readable English dictionary. This dictionary is based on structured data extracted on 2024-05-01 from the enwiktionary dump dated 2024-04-21 using wiktextract (f4fd8c9 and c9440ce). The data shown on this site has been post-processed and various details (e.g., extra categories) removed, some information disambiguated, and additional data merged from other sources. See the raw data download page for the unprocessed wiktextract data.

If you use this data in academic research, please cite Tatu Ylonen: Wiktextract: Wiktionary as Machine-Readable Structured Data, Proceedings of the 13th Conference on Language Resources and Evaluation (LREC), pp. 1317-1325, Marseille, 20-25 June 2022. Linking to the relevant page(s) under https://kaikki.org would also be greatly appreciated.