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 Bogus math 

In the ""Power quantities"" section, what's the point of asserting ""Lp = 0.5*ln(P/Po) = 10*Log(P/Po)"" when it is true only for the degenerative case: P == Po? Also, why term ""Po"" as ""reference power""? ""P"" & ""Po"" should be ""P1"" & ""P2"" (that is, any arbitrary power measurements). Likewise for the ""Field quantities"" section.   "