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Anon's 11.493 could well be closer than my 11.5. I worked with my
HP35s calculator and the x^y function key and only checked 30�, 25�,
06', 16', and 45�.  So, for instance, I got Pepperday's Log of 28.385
as 11.5 to the -.28385 power times -100 which shifts the decimal and
cancels the minus sign.

Hewitt

On 1/13/09, Peter Fogg  wrote:
> Thanks for this, Hewitt. From another, offlist source (reproduced with
> permission) comes this:
>
> Bayless' Table is based on the following relationship,
>                               100000*log (1/sin x )
> Pepperday's Table is similar, viz,
>                               100*log (1/sin s)/log 11.4953
>  (which I have derived empirically).
>  Where x and s are the required angular values of the argument and
> all logs are to the base 10.
>
>
> On Tue, Jan 13, 2009 at 12:27 AM, Hewitt Schlereth  wrote:
>
> >
> > It looks to me that the "S" Table is a table of logarithms to base
> > 11.5 multiplied by minus (-) 100.
> >
> > Hewitt
> >
>
> >
> >
> >
> >
> > On 1/11/09, Piterr11@gmail.com  wrote:
> > >
> > >  Does anyone know what mathematical function Michael Pepperday was using
> to construct his 'S' tables?  They seem to differ from Bayless, which are
> based on the Modified HO 211 (Ageton's Tables).
> > >
> > >
> > >
> > >  >
> > >
> > > >
> >
>

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