Surface Tension vs Interfacial Tension. Both surface tension and interfacial tension are effects based on liquids. Both these effects take place due to the unbalanced intermolecular forces between the liquid or solutions molecules.
Statistical process control (SPC) is a method of quality control which employs statistical methods to monitor and control a process. This helps ensure the process operates efficiently, producing more specification-conforming product with less waste (rework or scrap).
These tools come from the area of statistics and are used to help. identify quality problems in the production process as well as in the product itself. Statistical quality control is the subject of this chapter. Statistica1 quality control (SQC)is the term used to describe the set of statistical. tools used by quality professionals.