"511 keV is the approximate amount of energy created when an electron or positron (which each have a mass of 9.11x10-31 kg) are converted to energy according to Einstein's famous equation:"
"E = mc2"
"i.e. E= 9.11x10-31 kg x (3x108 m s-1)2."
"i.e. E= 9.11x10-31 kg x (3x108 m s-1)2."
"e− + e+ ------> γ + γ"
"Where e− is the electron, e+ is the positron and γ are gamma rays emitted."
"Where e− is the electron, e+ is the positron and γ are gamma rays emitted."
"Where e− is the electron, e+ is the positron and γ are gamma rays emitted."
"E = mc2"
"Giving E= 8.20x10-14 J which is equivalent to 511 keV."