Gay-Lussac's Law
An ideal gas law stating that gas pressure is directly proportional to absolute thermodynamic temperature at constant volume.
Governing formula
P1 / T1 = P2 / T2 (at constant V)
SI unit
Pa/K
In depth
In a rigid closed container, increasing temperature boosts molecular kinetic energy and impact speeds, driving up wall pressure linearly with Kelvin temperature.
Examples in the real world
A pressure cooker building up high steam pressure as its temperature rises above 100°C.