Semi conductors: Materials having exactly four electrons in their outermost orbit. Germanium and silicon are two examples. Related posts: Catalyst AE8007 Aircraft Materials Syllabus AE8001 Space Mechanics Syllabus AE8013 Rockets and Missiles Syllabus CE8404 Concrete Technology Syllabus OML752 Electronics Materials Syllabus Servo Smart materials Hall effect Articulated vehicle PH8252 Physics for Information Science Syllabus OTL553 Telecommunication Network Management Syllabus PH8201 Physics For Civil Engineering Syllabus Doping BE8253 Basic Electrical Electronics and Instrumentation Engineering Syllabus OML753 Selection of Materials Syllabus Push rod Armature reaction AE8302 Elements of Aeronautical Engineering Syllabus Rocker arm Read more articles Previous PostSecondary cell/battery Next PostSensor