Some ideas on representing an equation

[andrew Lindsay]

Dear members,

I have been playing around with PyNomo and it is a powerful product. By and large I have used it to recreate some simple nomographs that I have seen in text books that are too small or too aged to be of any use.

Now I am embarking on trying to create my own nomograph but I am having trouble deciding how to go about it.

The equation that I want to represent is as follows.

ln(C/C0) = -31000000 * exp(-10161 / (T + 273.15) * exp (1.75 * pH) * d

Where,

C/C0 - Final concentration / Initial concentration
T - Temperature, in deg C
pH - Solution pH
d - Duration, in days

Basically, given, T, pH, d and C, I want to be able to determine what initial concentration I will require.

Any assistance would be greatly appreciated.

Best regards

Andrew Lindsay

[Leif]

Hello Andrew,

you have missed parentheses in your equation. If your equation is type
f1(C/C0)=f2(T)*f3(pH)*f4(d)

I would probably make it simple type 3 equation with logs. If the equation is not of that form, let's look it more detailed once equation is corrected.

br,

\leif