Ek = (m-m0)c^2 = m0 * c^2
m = m0 / sqrt(1-v^2/c^2)
sqrt根号,m0静质量.
由上两式得v = sqrt3 / 2 *c
动量 mv = sqrt3 m0c
波长 = h/p = h/mv = sqrt3h / (3m0c)