E=MC²: Difference between revisions
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{{wikipediainfo|Mass–energy equivalence}} | {{wikipediainfo|Mass–energy equivalence}} | ||
In [[1905]], [[Albert Einstein]] came up with the [[mathematics|mathematical]] scientific conclusion of '''E=MC²'''. ([[TV]]: ''[[The Lie of the Land (TV story)|The Lie of the Land]]'') | In [[1905]], [[Albert Einstein]] came up with the [[mathematics|mathematical]] scientific conclusion of '''E=MC²'''. ([[TV]]: ''[[The Lie of the Land (TV story)|The Lie of the Land]]'') It was part of the [[theory of relativity]], and stated that energy equals mass times the speed of light squared. ([[TV]]: ''[[Four to Doomsday (TV story)|Four to Doomsday]]'') According to the [[Third Doctor]], this meant that "when you lose mass, the energy has to go somewhere." ([[TV]]: ''[[The Dæmons (TV story)|The Dæmons]]'') | ||
During the [[Monk invasion]] of Earth, the [[Monk (species)|Monks]] launched propaganda claiming to have helped Einstein come up with this conclusion. ([[TV]]: ''[[The Lie of the Land (TV story)|The Lie of the Land]]'') | |||
== Behind the scenes == | == Behind the scenes == | ||
The famous conclusion, '''E=MC²''', only holds for a body at rest. The more general conclusion derived by Einstein was, in fact, '''E<sup>2</sup>= | The famous conclusion, '''E=MC²''', only holds for a body at rest. The more general conclusion derived by Einstein was, in fact, '''E<sup>2</sup>=(MC<sup>2</sup>)<sup>2</sup>+(PC)<sup>2</sup>''', where E represents the energy of the body, M represents its mass, C is the speed of light, and P is the body's momentum. | ||
In the real world, though mass-energy equivalence was not a ''core principle'' in {{w|special relativity}}, as ''Four to Doomsday'' supposes, it was a natural consequence of that theory, which Einstein formalised with his 1905 derivation. | |||
[[Category:Physics from the real world]] | [[Category:Physics from the real world]] | ||
[[Category:Equations]] | [[Category:Equations]] | ||
Latest revision as of 11:14, 9 March 2023
In 1905, Albert Einstein came up with the mathematical scientific conclusion of E=MC². (TV: The Lie of the Land) It was part of the theory of relativity, and stated that energy equals mass times the speed of light squared. (TV: Four to Doomsday) According to the Third Doctor, this meant that "when you lose mass, the energy has to go somewhere." (TV: The Dæmons)
During the Monk invasion of Earth, the Monks launched propaganda claiming to have helped Einstein come up with this conclusion. (TV: The Lie of the Land)
Behind the scenes[[edit] | [edit source]]
The famous conclusion, E=MC², only holds for a body at rest. The more general conclusion derived by Einstein was, in fact, E2=(MC2)2+(PC)2, where E represents the energy of the body, M represents its mass, C is the speed of light, and P is the body's momentum.
In the real world, though mass-energy equivalence was not a core principle in special relativity, as Four to Doomsday supposes, it was a natural consequence of that theory, which Einstein formalised with his 1905 derivation.
