Dr. Cruz referred the patient either to the lab doing the testing or to another doctor. Presumable, the other doctor then referred the patient for lab tests, but as this is fiction, it is equally possible the other doctor was a scientific researcher who worked in/owned a research lab. Since Dr. Cruz referred the patient, he was the referring doctor.
â¢ SURFACE TENSION (noun). The noun SURFACE TENSION has 1 sense: 1. a phenomenon at the surface of a liquid caused by intermolecular forces. Familiarity information: SURFACE TENSION used as a noun is very rare.
Definitions of stress and strain. Nominal stress: the force on the object divided by the original area. True stress: the force on the object divided by the actual area. E.g., when necking occurs the true stress is the force applied divided by the area of the neck. The unit for stress is Nm-2, or Pa. Nominal strain: change in dimension / original dimension. This is also known as the engineering strain, and is strictly only true for very small displacements.