Wolframalpha says they're the same:
http://www.wolframalpha.com/input/?i...en+ratio%29^-3
Interestingly its also equivalent to 2+sqrt(5).
Neuro (2nd January 2017)
sqrt(x) = x^(1/2)
x^-2 = 1/x^2
Roots are fractional exponents. Inverses are negative exponents.
Very interesting device you can buy if you want to view these magnetic fields:
http://www.ferrocell.us/buy%20complete%20systems.html
ok I agree.
The tatooed lunatic has explained magnetism better than any physics book has.
Where barefoot hairy armpit mother nature takes us from here is unknown.