Energy being Converted to Mass

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  • Thread starter Theudius
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Why is it that when energy is converted into mass we must make equal amounts of anti matter as matter during pair production?
 

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  • #2
Drakkith
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Are you aware of the various conservation laws that have to be obeyed, or are you asking why these conservation laws must be obeyed?
 
  • #3
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Hi, I'm aware that charge, baryon number, lepton number, energy and momentum must be conserved. Yeah I should have asked why these laws must be obeyed.
 
  • #4
Nugatory
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I should have asked why these laws must be obeyed.
It is an experimental fact that the universe we live in obeys these laws. As for why we live in a universe that obeys these laws and not some other laws.... that's not something that science can answer.

(Moving beyond a B-level answer: you could google for "Noether's Theorem" and take a look at http://math.ucr.edu/home/baez/noether.html to see how conservation laws follow from the symmetries of our universe. But that just moves the "Why?" question around - why do we live in a universe with these particular symmetries and not some others? Sooner or later it comes down to "because that's how it is")
 
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