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The spacetime and energy momentum relations can be written as
t^{2} - x^{2} = s^{2}
P^{+}P^{-} = m^{2}
Niels Bohr says that "the spacetime or energy momentum relations must be applied at least twice, otherwise they are not defined". Does anyone know what he means by this?
t^{2} - x^{2} = s^{2}
P^{+}P^{-} = m^{2}
Niels Bohr says that "the spacetime or energy momentum relations must be applied at least twice, otherwise they are not defined". Does anyone know what he means by this?