Talk:Purnell equation
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This equation seems to be incorrect. The squareroot of N is correct but the 4 underneath it should not be squarerooted. Search for the purnell equation in literature online and in books for confirmation.194.46.178.24 (talk) 13:58, 6 January 2010 (UTC)
I agree, I also think this formula is incorrect. If the Purnell equation is actually based on the approximation that the average width of the peak ω is equal to the width of the second peak ω2, this formula is definitely false and the proposed correction is right(that could be easily proved). However, even if not based on that approximation, the formula remains false because the exact formla (e.g. the one based on the average width of the two peaks) having the factor sqrt(4) -like in the current version- would be with the term (2+k1+k2) at the denominator instead of (1+k2). —Preceding unsigned comment added by 85.3.169.41 (talk) 21:58, 21 January 2010 (UTC)
Since no one did it, I just corrected it as we suggested. 85.3.113.120 (talk) 20:21, 23 April 2010 (UTC) Rover