Re: Medhurst Table

• To: tesla-at-pupman-dot-com
• Subject: Re: Medhurst Table
• From: "Antonio Carlos M. de Queiroz" <acmq-at-compuland-dot-com.br> (by way of Terry Fritz <twf-at-verinet-dot-com>)
• Date: Sat, 09 Jan 1999 10:29:14 -0700
• Approved: twf-at-verinet-dot-com

Tesla List wrote:

> Has anyone hacked at the Medhurst table to derive k via
> h/d? I'm simply looking for a quick way to calc k in a
> spreadsheet rather than using vlookups, etc... hoping
> someone has already done the hacking.

I use this formula (L=length, R=radius, in meters,
capacitance in Farads):

capacitance=(11.26*L+16*R+76.4*sqrt(R*R*R/L))*1e-12

This formula is in the paper:
K. D. Skeldon, A.I. Grant, and S. A. Scott, "A high potential Tesla

coil impulse generator for lecture demonstrations and science
exhibitions,"

American Journal of Physics, Vol. 65 (8), pp. 744-754, August 1997.

Antonio Carlos M. de Queiroz

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