The discussion centers on the relationship between building construction and the Second Law of Thermodynamics, specifically addressing whether constructing a building from disordered materials like bricks and cement constitutes an exception to the law. Participants clarify that a building is not an isolated system, as external interactions, including heat and energy from workers and machines, contribute to an overall increase in entropy. The conclusion is that while the ordering of materials occurs during construction, the entropy produced by external factors exceeds this ordering, thus adhering to the Second Law.
PREREQUISITESStudents of physics, construction professionals, and anyone interested in the intersection of thermodynamics and practical applications in building design and construction.
In this context, a "system" is a collection of things around which you draw a notional boundary. You watch what comes in or goes out through the boundary over time. You can ask questions about the state of the system.shihab-kol said:OK, so what do you mean by 'system' ?
I did not understand your first question.
shihab-kol said:From what I know, the law says that disorder increases over time.
But, when a building is constructed the disordered bricks,cement etc. take form of the ordered building.
Am I wrong or is this an exception?
You need to know the concept of a system to do any physics. A system is a defined boundary containing some configuration of matter and energy. The configuration of the matter and energy is known as the state of the system. Physics is largely a process of keeping track of the matter and energy that crosses the boundary of a given system and applying laws that allow you to predict how the system changes state.shihab-kol said:OK, so what do you mean by 'system' ?
I did not understand your first question.