From Wikipedia, the free encyclopedia. A wafer, also called a slice or substrate, is a thin slice of semiconductor material, such as a crystalline silicon, used in electronics for the fabrication of integrated circuits and in photovoltaics for conventional, wafer-based solar cells.he boule is then sliced with a wafer saw (wire saw) and polished to form wafers. The size of wafers for photovoltaics is 100â200 mm square and the thickness is 200â300 Î¼m. In the future, 160 Î¼m will be the standard. Electronics use wafer sizes from 100â450 mm diameter.
Freebase(0.00 / 0 votes)Rate this definition: Glasgow Coma Scale. The Glasgow Coma Scale or GCS is a neurological scale that aims to give a reliable, objective way of recording the conscious state of a person for initial as well as subsequent assessment.
The Glasgow Coma Scale (GCS) is used as a guide to the severity of head injury. In the following classification the GCS score refers to the score observed after hypovolemia, hypoxia, and drug and alcohol effects have been corrected: â¢ Mild head injury (GCS score of 13 to 15) â¢