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Mass–energy equivalence

Physical laws, theories and quantities

In physics, mass–energy equivalence states that anything having mass has an equivalent amount of energy and vice versa, with these fundamental quantities directly relating to one another by Albert Einstein's famous formula:


  • Nomenclature 

  • Conservation of mass and energy 

  • Applicability of the strict formula 

  • Meanings of the strict formula 

  • Application to nuclear physics 

  • Practical examples 

  • Efficiency 

  • Background 

  • History