Although there is this differential (?) ideal gas law, Lenard mentioned,

I think the Boltzman constant should not be defined as shown below,

as it uses K as unit and currently multiplicative K is used in the library for relative temperature.

I have no easy idea, how to formulate it differently, as R itself is something like a quantitive_point (inherited by the absolute temperature difference) and multiplications with it are not allowed.

Perhaps an absolute temperature as a quantity (instead of a quantity point) is needed after all?
 

-----Ursprüngliche Nachricht-----
Von: Lénárd Szolnoki via Std-Proposals <std-proposals@lists.isocpp.org>
Gesendet: Di 18.06.2024 15:42
Betreff: Re: [std-proposals] On the standardization of mp-units P3045R1
An: std-proposals@lists.isocpp.org;
CC: Lénárd Szolnoki <cpp@lenardszolnoki.com>;


> quantity R_boltzman = 8.314 * N * m / (K * mol);

There is an analogous Δp V = nRΔT equation, where Δp is pressure-change
and ΔT is temperature-change. Here the 1°C = 1K unit conversion is the
correct one.