---------- Forwarded message ---------- Date: Tue, 31 Mar 1998 18:07:26 -0800 (PST) From: "Edward V. Phillips" <ed-at-alumni.caltech.edu> To: tesla-at-pupman-dot-com Subject: Re: Inductance (fwd) Eric: What does your formula give for length/diameter? Too lazy to figure it out. Inductance formula you used is Wheeler's approximation but plenty good enough in the geometry range you are interested in. Ed