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originally posted by: helius
a reply to: PansophicalSynthesis
What makes everybody so sure that matter can be created. Perhaps matter is a universal constant. Perhaps matter is like some sort of natural resource that is spread across the universe in a limited amount. What’s already there is what there is and that is the total amount of mass there ever is going to be.
We can manipulate existing mass in lots of ways, but we cannot create new mass
To create an electron-positron pair the total energy of the photons must be at least 2m⌵ec⌃2