Work (thermodynamics) of the energy went out as heat, and how much as work. This can be summarized by saying that heat and work are not state functions of the system. This is in contrast to classical mechanics, where net work exerted by a particle is a state function. Pressure–volume work (or "PV" work) occurs when the volume of a system changes. "PV" work is often measured in units of litre-atmospheres where = . However, the litre-atmosphere is not a recognised unit in the SI system of units, which measures P in Pascal (Pa), V in m, and PV in Joule (J),
The Modern Theatre Is the Epic Theatre The Modern Theatre Is the Epic Theatre "The Modern Theatre Is the Epic Theatre" is a theoretical work by the twentieth-century German theatre practitioner Bertolt Brecht. It was composed in 1930 as a set of notes to accompany his opera "Rise and Fall of the City of Mahagonny". In it, he outlines his ideas for a "refunctioning" of the theatre, his principle of the 'separation of the elements" (conceived in opposition to Wagner's principle of the "integrated work of art"), and the "shifts of accent" involved in the move from traditional "dramatic" theatre to his own "epic" theatre. It also