Arnold Sommerfeld, the German theoretical physicist said “Thermodynamics is a funny subject. The first time you go through it, you don't understand it at all. The second time you go through it, you think you understand it, except for one or two small points. The third time you go through it, you know you don't understand it, but by that time you are so used to it, it doesn't bother you anymore." This humorous view makes us think that every law guides us to the distinctness of thermodynamic properties which in turn aids us to comprehend and foretell the functioning of a physical system.
Thermodynamics is actually a division of physics dealing with the energy and function of a system. Thermodynamics in reality deals only with the high level reaction of a system providing us with the facility of observing and measuring in experiments. The systems of propulsion and high speed flows are the area of thermodynamics which makes aerodynamics an interesting subject. The capacity of heat is a constant that states the amount of heat added when there is an increase in per unit temperature. The measure of the constant is not the same for different substances. Heat is constantly transmitted from a higher temperature object to an object of lower temperature.
The inner energy is merely a type of energy similar to the potential energy of a physical object at some altitude higher up the earth, or the kinetic energy of a physical object in movement. Just like the ability to convert potential energy to kinetic energy while maintaining the full energy of the structure, the inner energy of a thermodynamic arrangement can be transformed to either kinetic or potential energy. Similar to the storage capacity of potential energy, the internal energy can also be hidden away or stored in the system. On the other hand, heat and work cannot be hoarded or preserved separately since they reckon on the physical process. The 1st law of thermodynamics permits for several potential conditions of a system to subsist, but only some conditions can be seen existing in nature.
For example in the case of a gas, the heat transmit is linked to an alteration in temperature. The condition of a gas is determined by its temperature, pressure, and volume. In order to change the state of a gas it has to be heated or it can be achieved in a variety of ways. The quantity of work that a gas does depends on both the opening and absolute conditions and on the procedure applied to bring about the change. This shows that different processes will result in varied amount of heat transfer and work. The consequences of both heat flow and work are collective in the 1st Law of Thermodynamics. There are some thermodynamic procedures which do not result in heat transfer. Engineers have named such processes “adiabatic."