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An astragal is a moulding profile composed of a half-round surface surrounded by two flat planes . [ clarification needed ] An astragal is sometimes referred to as a miniature torus. It can be an architectural element used at the top or base of a column , but is also employed as a framing device on furniture and woodwork .
For the example of glass (n S ≈ 1.5) in air (n 0 ≈ 1.0), this optimal refractive index is n 1 ≈ 1.225. [20] [21] The reflection loss of each interface is approximately 1.0% (with a combined loss of 2.0%), and an overall transmission T 1S T 01 of approximately 98%. Therefore, an intermediate coating between the air and glass can halve the ...
Pages in category "Glass coating and surface modification" The following 23 pages are in this category, out of 23 total. This list may not reflect recent changes. A.
The simplest optical coatings are thin layers of metals, such as aluminium, which are deposited on glass substrates to make mirror surfaces, a process known as silvering. The metal used determines the reflection characteristics of the mirror; aluminium is the cheapest and most common coating, and yields a reflectivity of around 88%-92% over the ...
Self-cleaning glass is a specific type of glass with a surface that keeps itself free of dirt and grime. The field of self-cleaning coatings on glass is divided into two categories: hydrophobic and hydrophilic. These two types of coating both clean themselves through the action of water, the former by rolling droplets and the latter by sheeting ...
Astragal Molding profile composed of a half-round surface surrounded by two flat planes (fillets). An astragal is sometimes referred to as a miniature torus. It can be an architectural element used at the top or base of a column, but is also employed as a framing device on furniture and woodwork. Atrium
Silvering on the inside of a glass test tube Silvering is the chemical process of coating a non-conductive substrate such as glass with a reflective substance, to produce a mirror . While the metal is often silver , the term is used for the application of any reflective metal.
Powder coating on glass is used in industries such as cosmetics, fragrances, wine and spirits, where the contents inside of the glass containers require protection from ultraviolet (UV) rays, particularly UVA electromagnetic radiation, which is capable of penetrating glass. When applied with a dual-coat method, powder coating techniques on ...