4 pi epsilon 0 value July 8, 2019 16 32 64 128 1 4 pi epsilon 0 value 4 pi epsilon 0 ki value E 2 4 pi epsilon 0 value 1 4 pi epsilon 0 ki value Value of 1 upon 4 pi epsilon 0 E^ipi + 1 = 0 = 1/(4pi*epsilon_ 0 )