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mass and energy considered as equivalent and interconvertible, according to the theory of relativity


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  • Mass-energy equivalence

    mass-energy equivalence An equation derived from Einstein’s theory of Special Relativity expressing the relationship between the mass and energy of objects with mass. The equation is E = mc2, where E is the energy of the object in joules, m is its relativistic mass in kilograms, and c is the speed of light (approximately 3 […]

  • Mass-energy equation

    [mas-en-er-jee] /ˈmæsˈɛn ər dʒi/ noun, Physics. 1. the equation, E=mc2, formulated by Albert Einstein, expressing the equivalence between mass and energy, where E is energy, m is mass, and c is the velocity of light.

  • Massenet

    [mas-uh-ney; French masuh-ne] /ˌmæs əˈneɪ; French masəˈnɛ/ noun 1. Jules Émile Frédéric [zhyl ey-meel frey-dey-reek] /ʒül eɪˈmil freɪ deɪˈrik/ (Show IPA), 1842–1912, French composer. /ˈmæsəˌneɪ; French masnɛ/ noun 1. Jules Émile Frédéric (ʒyl emil frederik). 1842–1912, French composer of operas, including Manon (1884), Werther (1892), and Thais (1894)

  • Masses

    [mas] /mæs/ noun 1. a body of coherent matter, usually of indefinite shape and often of considerable size: a mass of dough. 2. a collection of incoherent particles, parts, or objects regarded as forming one body: a mass of sand. Synonyms: assemblage, heap, congeries. 3. aggregate; whole (usually preceded by in the): People, in the […]

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