Re: Linear Magnification

[T3D Peter Homer <P.J.Homer@xxxxxxxxxxxxxxxxx>]

>For P.J.Homer I have upgraded my lens combination spreadsheet
>and also given Joel a graphic of how the Newtonian and Gaussian
>forms of the lens equation relate to each other.  This graphic
>shows some interesting consequences in magnification.  Go to
>Tech 3D's web site (kindly maintained by Mr. Alpers):
>
>      http://www.frii.com/~rkymtmem/tech3d/tech3d.html
>
>And bring down:
>
>      John B's Lens Combo spreadsheet (XLS)
>      Newtonian and Gaussian forms of the lens equation
>
>Which become:
>      LensCombo.xls   (works on Mac or PC)
>      n-g.gif
>
>Have a look and see if this solves your problem, Peter.
>
>John B

  Thanks for that, actualy I  had to send my slide off in the folio on
Tuesday as it was already late so I had to go with your first suggestion
but I will beare this in mind for next time. Although I have difficulty  in
accessing web sites at least in the time available in my lunch hour . Peter



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