  The ideal reversible thermodynamic cycle visualization of the Nernst effect
in Laughlin geometry, excluding the kinetic contribution is proposed. The
Ettingshausen effect is also treated in the fashion using the reverse cycle.
The corresponding values of the off-diagonal thermoelectric coefficients are
expressed through the ratio of the entropy budget per magnetic flux. Our
approach enlightens the profound thermodynamic origin of the relation between
the Nernst effect and magnetization currents.
