Weird Ratios in Free Space
m0 = 4pE-7 H/m = 400p nH/m
e0 = 1e-9/36p F/m = 1000/36p pF/m
1 / ¶(m0e0) = ¶((4pE-7 ) (1e-9/36p) =
= ¶(9E16) =3E8 m/s = the speed of
¶(m0/e0) = ¶(4pE-7/(1e-9/36p) = ¶(14400p2) = 120p W _ 377 W
Characteristic Impedance of Free Space
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