Solid-state physics is the study of rigid matter, or solids, through methods such as quantum mechanics, crystallography, electromagnetism, and metallurgy. It is the largest branch of condensed matter physics.  This course is for P.G as well as U.G Physics students  in universities
Fluorite - WikipediaPhotographs of mineral No. 42130: Quartz (Dauphiné-law Twin) from ...