Why the pages look like this
The Method
A result is only trustworthy if it names the assumptions behind it and shows what each one is doing. Every page here is held to that.
Every assumption, with its cost
Each assumption is paired with the regime where dropping it makes the result fail — ideal-gas behaviour, dilute solution, fast pre-equilibrium.
Every step derived
One operation per line, each justified. Symbols rearranged before numbers substituted; no algebra done in silence.
Reality checks
Units checked, limiting cases recovered, and a worked number so the result lands at a real scale.
Three tiers, in place
The idea in words, the standard derivation, and the rigour a lecturer waves past — toggle depth without leaving the page.