I am trying to build a systematic formula for how magic operates. This is based on magic as energy manipulation and transformation. It can be based on historical or modern esoteric magic principles.
I found the Q. Equation for magic system involving negative resistance and exposure time But its basic asumptions are different and the equations seems overly conplicated for a non-scientist.
Very tentatively, I came up with
Energy/effect of the Spell = (Power used $\times$ Focus) $\div$ Resistance
$P$ = Amount of power being generated, Source of the energy and how well it is accumulated
$F$= Focus of the power, how well the energy is controlled/directed
$R$= Resistance to the desired effect based on the size of the effect, the laws of nature, easiness of the result, R could need a formula of its own.
So for instance, if one taps universal energy by connecting to an external source, $P$ is huge, but it is so unwieldy and uncontrolled that $F$ is tiny, whereas if one uses internal energy, like by meditating, $P$ is very small, but the focus is high.
If the "Belief" of the user is a factor as in esoteric magic, I could add a factor of $B$ (Belief that the magic will succeed). Also, since "Will" is an important part of ceremonial magic, it could be factored in, though it is already implied as part of the Focus.
Any ideas about other factors that should be taken into consideration?