Science

Coesite is a very unusual mineral, and it is silica, silicon dioxide (SiO2), high-pressure polymorph (cristal form). It is produced when quartz is exposed to…

The Scottish Borders (Scots: the Mairches, lit. ‘the Marches’; Scottish Gaelic: Crìochan na h-Alba), council area, southeast Scotland, roughly coinciding with the River Tweed drainage…

Al-Rifa’i Mosque (Arabic: مسجد الرفاعي‎, transliterated also as Al-Rifai, Al-Refai, Al-Refa’i, El-Refa’i, and named in English: the Refaai Mosque) is one of Cairo’s largest mosques.…

Ammonium nitrate is the nitric acid ammonium salt; it is a chemical compound containing the chemical formula NH4NO3. At room temperature, it is a colorless…

Ion plating (IP) is the method by which substance coatings, typically a compound or metal, are deposited on target surface areas. It is an exciting…

A Bubbler cylinder is a component of a unit for the metal-organic chemical vapor deposition (MOCVD). They are devices that are used for conveying electronic…

Trachyte is an igneous volcanic rock consisting primarily of alkali feldspar with small quantities of dark minerals such as biotite, amphibole, or pyroxene. It is…

Mosaic gold is obtained as a yellow scaly crystalline powder and used as a pigment in bronzing and gilding wood and metalwork. It is also…

Chartalism is a non-mainstream monetary theory that defines money as a creation of the government that derives its value from its status as legal tender.…

Spelter is the most common commercial form of zinc metal. It is a zinc-lead alloy that ages to resemble bronze, but is softer and has…

Nitrogen trichloride, also known as trichloramine, is prepared by the absorption of chlorine gas into a slightly acid ammonium chloride solution. That is the chemical…

Carbonyl metallurgy is used to manufacture products of iron, nickel, steel, and other metals. Coatings are produced by vapor plating using metal carbonyl vapors. It…