What is Thermodynamics?
'''Thermodynamics''' is a [[branch]] of [[physics]] that studies the relations between, heat, temperature, and energy. A branch of [[Mathematics|math]] called [[statistics]] is often used in thermodynamics to look at the motion of [[particle]]s. Thermodynamics is useful because it helps us understand how the world of the very small [[atoms]] connects to the large scale world we see everyday. Thermodynamics also has two main branches called [[classical thermodynamics]]<ref>Pippard, A. B. (1964). Elements of classical thermodynamics: for advanced students of physics. Cambridge University Press.</ref><ref>Emanuel, G. (1988). Advanced classical thermodynamics. AIAA.</ref> and [[Statistical mechanics|statistical]] thermodynamics.<ref>Hill, T. L. (1986). An introduction to statistical thermodynamics. Courier Corporation.</ref><ref>Fowler, R. H. (1939). Statistical thermodynamics. CUP Archive.</ref><ref>Schrödinger, E. (1989). Statistical thermodynamics. Courier Corporation.</ref> An important idea in thermodynamics is that of a [[thermodynamic system]]. An example of a thermodynamic system is a [[brick]]. A brick is made up of many atoms which all have their own properties. All thermodynamic systems have two kinds of properties, ''extensive'' and ''intensive''. For the brick, the extensive properties are the ones you get by adding up all the atoms. Things like the [[volume]], [[energy]], [[mass]], and [[Electric charge|charge]] are extensive because two of the same brick put together have twice as much mass as one brick. The intensive properties of the brick are the ones you get by looking at the average over all atoms. Things like [[temperature]], [[pressure]], and [[density]] are intensive because two of the same brick still has the same temperature as one brick alone. == Laws of thermodynamics == There are four laws of thermodynamics that say how [[energy]] can be moved between two objects in the form of [[heat]]. The laws of Thermodynamics point out how the energy in a system changes and if the system can work