The Stefan - Bolizmann law is expressed in the form. __ BblbepuTe oAMH OTBer: R=sigma T^4 S=kcdot lnW E=hv

The correct answer is **R = σT⁴**.<br /><br />The Stefan-Boltzmann Law describes the power radiated from a black body in terms of its temperature. It states that the total energy radiated per unit surface area of a black body across all wavelengths per unit time is directly proportional to the fourth power of the black body's thermodynamic temperature.<br /><br />Where:<br /><br />* **R** represents the radiant heat energy emitted per unit time per unit area.<br />* **σ** is the Stefan-Boltzmann constant (approximately 5.67 x 10⁻⁸ W⋅m⁻²⋅K⁻⁴).<br />* **T** is the absolute temperature of the black body in Kelvin.<br /><br /><br />The other options represent different physics concepts:<br /><br />* **S = k⋅lnW** is Boltzmann's entropy formula, relating entropy (S) to the number of microstates (W) of a system.<br />* **E = hv** is Planck's equation, relating the energy (E) of a photon to its frequency (v).<br />