Electrum is a metal alloy mainly consisting of gold, silver and traces of some other metals. This naturally occurring alloy has a long history of being used for making coins, vessels and also for coatings. It was referred to as âgoldâ or âwhite goldâ by ancient Greeks.
In Interstitial defect, atom occupies the interstitial space of the lattice structure of solid crystal. In Substitutional defect, the foreign atom occupies only the lattice site of a crystalline solid. Interstitial defect may occur by the atoms of either same solid (called self-interstitial) or foreign material. Substitutional defect is always caused by foreign atoms.
Interstitial space is a term used to describe the space between human-usable common space. Interstitial space describes the hidden, unusable space in modern buildings reserved for HVAC systems, electricity and networks. These interstitial spaces provide for the essential cardiovascular systems of a modern architectural creation. Just as the body has organs that help it to function, buildings have their own system that is hidden to the eye but essential in function. Only when a building is built, or it is in need of maintenance, are these interstitial spaces opened and operated on.