Notes and Study material for Exams
Metal In chemistry, a metal is an element that readily forms positive ions (cations) and has metallic Bonds. Metals are sometimes described as a lattice of positive ions surrounded by a cloud of delocalized electrons. The metals are one of the three groups of Elements as distinguished by their ionization and bonding properties, along … Read more
Cathedral architecture The history of cathedral architecture begins around the year 312 CE. When the Byzantine emperor, Constantine I, publicly converted to Christianity and legitimized Christianity as a formal religion, the Christian church as we know it was formally organized. Although there were impressive buildings long before, calling these structures cathedrals would be … Read more