TY - JOUR T1 - Bartovo odvodenie termodynamickej bilančnej rovnice energie A1 - Červeň, Ivan JA - Obzory matematiky, fyziky a informatiky Y1 - 2009 VL - 38 IS - 3 SP - 43 EP - 47 SN - 1335-4981 N2 - The connection between thermodynamic energy, warm quantity and work is derived, using the fluctuations of forces and displacements of microscopic parts of vessel walls, generated by the molecules impacts. By this way is also the warm quantity defined. ER -