d″ = 5√ (32Q2 / gπ2i) 5√ ζ′ = 0.6319 5√ (Q2/i) 5√ ζ′.
(c) Equation 7 may be put in the form
d = 5√ (32αQ2 / gπ2i) 5√ (1 + 1/12d).
(9)
Expanding the term in brackets,
5√ (1 + 1/12d) = 1 + 1/60d − 1/1800d2 ...
Neglecting the terms after the second,
| d = 5√ (32α / gπ2) 5√ (Q2/i) · {1 + 1/60d} = 5√ (32α / gπ2) 5√ (Q2/i) + 0.01667; |
(9a)
and