I should have pointed out in my last post that I realized the result through 
dimensional analysis:
the term   lxd^2 has dimesions of length cubed
in order for D to be in length units, the exponent of the above term must be 
1/3, not 1/4

--
73 Warren K2ORS/WD2XGJ
FN42hi

 An article called Low Frequency Coil Q, by Bill Bowers, is reproduced in the
> Low Frequency Experimenter's Handbook, Page 65

Be careful ! There is a typo in this article in the Low Frequency Experimenter's Handbook.

  The equation for D on p.66 reads:
D = 6x[lxd^2]^1/4

If you use this equation you cannot reproduce the result shown in the example.

  The final exponent should be 1/3 not 1/4, the equation should read:
D = 6x[lxd^2]^1/3


--
73 Warren K2ORS/WD2XGJ
FN42hi

> > >

> > Anyway, if anyone can point Jay to Bill Bowers' articles, it would be
> > appreciated.
> >
> > John Andrews
> >
> An article called Low Frequency Coil Q, by Bill Bowers, is reproduced in the
> Low Frequency Experimenter's Handbook, Page 65

> > It probably lives on my system somewhere as an .rtf or.doc file so I can

> send it as an e-mail attachment if anyone wants it.

> > Peter, G3LDO > >