Macroscopic and Microscopic Approaches Difference
Difference between Macroscopic Approaches and Microscopic Approaches with Comparison Chart
The Major Difference between Macroscopic and Microscopic Approaches is that in the Microscopic approach, it is used in statistical thermodynamics. Macroscopic Approach, this kind of approach is used in classical thermodynamics.
Every substance is composed of a large number of molecules. The properties of the substance depending on the behavior of these molecules. The behavior of a system may be investigated from either a microscopic (Micro means small) or macroscopic (Macro means big) point of view.
For applications involving lasers, plasmas, high-speed gas flows, chemical kinetics, very low temperatures (cryogenics), and others, the methods of statistical thermodynamics are essential.
|Macroscopic Approach||Microscopic Approach|
|In this approach, a certain quantity of matter is considered without taking into account the events occurring at the molecular level.||The matter is considered to be comprised of a large number of tiny particles known as molecules, which move randomly in a disordered fashion. The effect of molecular motion is considered.|
|An analysis is concerned with the overall behavior of the system.||Knowledge of the structure of matter is essential in analyzing the behavior of the system.|
|This approach is used in the study of classical thermodynamics.||This approach is used in the study of statistical thermodynamics.|
|A few properties are required to describe the system.||Large numbers of variables are required to describe the system.|
|The properties like pressure, temperature, etc. needed to describe the system, can be easily measured.||The properties like velocity, momentum, kinetic energy, etc. needed to describe the system, cannot be measured easily.|
|The properties of the system are their average values.||The properties are defined for each molecule individually.|
|This approach requires simple mathematical formulas for analyzing the system.||No. of molecules is very large so it requires an advanced statistical and mathematical method to explain any change in the system|