spinel materials
91Diffusionless transformation — Diffusionless transformations classifications A diffusionless transformation is a phase change that occurs without the long range diffusion of atoms but rather by some form of cooperative, homogeneous movement of many atoms that results in a… …
92Thermodynamic temperature — is the absolute measure of temperature and is one of the principal parameters of thermodynamics. Thermodynamic temperature is an “absolute” scale because it is the measure of the fundamental property underlying temperature: its null or zero point …
93Silk Road — The Silk Road, or Silk Routes, are an extensive interconnected network of trade routes across the Asian continent connecting East, South, and Western Asia with the Mediterranean world, including North Africa and Europe. The so called Silk Routes… …
94List of chemistry topics — This page aims to list articles related to chemistry. This is so that those interested in the subject can monitor changes to the pages by clicking on Related Changes in the sidebar and on the bottom of the page.This list is not necessarily… …
95Paleomagnetism — is the study of the record of the Earth s magnetic field preserved in various magnetic minerals through time. The study of paleomagnetism has demonstrated that the Earth s magnetic field varies substantially in both orientation and intensity… …
96Ai-Khanoum — Infobox Afghan City official name =Ai Khanoum native name = province name =Kunduz image size = image caption = Coin of Eucratides I (171 145 BCE), one of the Hellenistic rulers of ancient Ai Khanoum. latd = 37.169 longd = 69.408 districts=… …
97Iron(II,III) oxide — Chembox new ImageFile = ImageSize = IUPACName = iron(II) diiron(III) oxide OtherNames = ferrous ferric oxide, ferroso ferric oxide, iron(II,III) oxide, magnetite, black iron oxide, lodestone, rust Section1 = Chembox Identifiers CASOther = [1317… …
98Volcanic pipe — Volcanic pipes are geological structures formed by the violent, supersonic eruption of deep origin volcanoes. They are considered to be a type of diatreme . Volcanic pipes are composed of a deep, narrow cone of solidified magma (described as… …
99Crystal twinning — Diagram of twinned crystals of Albite. On the more perfect cleavage, which is parallel to the basal plane (P), is a system of fine striations, parallel to the second cleavage (M). Crystal twinning occurs when two separate crystals share some of… …
100Verneuil process — The Verneuil process, also called flame fusion, was the first commercially successful method of manufacturing synthetic gemstones, developed in 1902 by the French chemist Auguste Verneuil. It is primarily used to produce the ruby and sapphire… …
