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The claim that '''E=mc²''' has never yielded anything of value and it has often been used as a redefinition of "[[energy]]" for pseudo-scientific purposes by non-scientific journals. At virtually all colleges and universities physicists explain how the equation is used in [[nuclear power]] generation, [[nuclear weapon]]s, ([[nuclear fusion]], [[nuclear fission]], and speculation about [[antimatter]]).<ref>[http://web.mit.edu/newsoffice/2005/emc2.html ''E=mc² passes tough MIT test''], MITNews, Dec 21, 2005</ref><ref>[http://www.pitt.edu/~jdnorton/teaching/HPS_0410/chapters/E=mcsquared/index.html John D. Norton ''Einstein for everyone - E=mc²''], Department of History and Philosophy of Science University of Pittsburgh</ref><ref>[http://hyperphysics.phy-astr.gsu.edu/hbase/relativ/releng.html Rod Nave ''HpyerPhysics - Relativistic Energy''], Georgia State University</ref><ref>[http://www.pbs.org/wgbh/nova/physics/legacy-of-e-equals-mc2.html Peter Tyson ''The Legacy of E=mc²''] October 11, 2005. PBS ''NOVA''. </ref>
The claim that '''E=mc²''' has never yielded anything of value and it has often been used as a redefinition of "[[energy]]" for pseudo-scientific purposes by non-scientific journals. At virtually all colleges and universities physicists explain how the equation is used in [[nuclear power]] generation, [[nuclear weapon]]s, ([[nuclear fusion]], [[nuclear fission]], and speculation about [[antimatter]]).<ref>[http://web.mit.edu/newsoffice/2005/emc2.html ''E=mc² passes tough MIT test''], MITNews, Dec 21, 2005</ref><ref>[http://www.pitt.edu/~jdnorton/teaching/HPS_0410/chapters/E=mcsquared/index.html John D. Norton ''Einstein for everyone - E=mc²''], Department of History and Philosophy of Science University of Pittsburgh</ref><ref>[http://hyperphysics.phy-astr.gsu.edu/hbase/relativ/releng.html Rod Nave ''HpyerPhysics - Relativistic Energy''], Georgia State University</ref><ref>[http://www.pbs.org/wgbh/nova/physics/legacy-of-e-equals-mc2.html Peter Tyson ''The Legacy of E=mc²''] October 11, 2005. PBS ''NOVA''. </ref>
The [[Theory of Relativity]] has never been able to mathematically derive '''E=mc²''' from first principles, and a physicist observed in a peer-reviewed paper published in 2011 that "a rigorous proof of the mass-energy equivalence is probably beyond the purview of the special theory."<ref>[http://adsabs.harvard.edu/abs/2011AmJPh..79..591H Eugene Hecht: ''How Einstein confirmed E<sub>0</sub>=mc²'', American Journal of Physics, Volume 79, Issue 6, pp. 591-600 (2011)]</ref>
The [[Theory of Relativity]] has never been able to mathematically derive '''E=mc²''' from first principles, and a physicist observed in a peer-reviewed paper published in 2011 that "Leaving aside that it continues to be affirmed experimentally, a rigorous proof of the mass-energy equivalence is probably beyond the purview of the special theory."<ref>[http://adsabs.harvard.edu/abs/2011AmJPh..79..591H Eugene Hecht: ''How Einstein confirmed E<sub>0</sub>=mc²'', American Journal of Physics, Volume 79, Issue 6, pp. 591-600 (2011)]</ref>
It has been known for a long time that radiation has a mass equivalence, which was correctly derived by [[Henri Poincare]] in 1904,<ref>[http://www.opticsinfobase.org/josa/abstract.cfm?uri=josa-42-8-540 Herbert E. Ives ''Derivation of the Mass-Energy Relation'', JOSA, Vol. 42, Issue 8, pp. 540-543 (1952)]</ref> but the equation '''E=mc²''' makes a claim far beyond that limited circumstance:
It has been known for a long time that radiation has a mass equivalence, which was correctly derived by [[Henri Poincare]] in 1904,<ref>[http://www.opticsinfobase.org/josa/abstract.cfm?uri=josa-42-8-540 Herbert E. Ives ''Derivation of the Mass-Energy Relation'', JOSA, Vol. 42, Issue 8, pp. 540-543 (1952)]</ref> but the equation '''E=mc²''' makes a claim far beyond that limited circumstance: