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).
Computer numeric controlled equipment is precision machinery that cuts, grinds, or drills into the material. CNC machinists make adjustments to the machine to control speed, material feed and path of the cut, as well as make sure the machines are set up properly, working well, and producing quality product. CNC machinists make sure their machines are working at full capacity, are stocked with needed materials, well-maintained and perform periodic checks on output. They look at the finished product to ensure it is defect-free and ready for the next step in production.