Boltzmann constant The Boltzmann constant (k or kB) links microscopic energy to macroscopic temperature. It has the exact SI value 1.380649×10⁻²³ J·K⁻¹ and underpins statistical mechanics and thermod…
Perpetual motion Perpetual motion refers to hypothetical devices or processes that would run indefinitely without external energy input, violating conservation of energy and thermodynamic laws; mod…
