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Curtains For Radio
A curtain is a piece of cloth or other material intended to block or obscure light, air drafts, or (in the case of a shower curtain), water. A curtain is also the movable screen or drape in a theatre that separates the stage from the auditorium or that serves as a backdrop/background. Curtains are often hung on the inside of a building's windows to block the passage of light. For instance, at night to aid sleeping, or to stop light from escaping outside the building (stopping people outside from being able to see inside, often for privacy reasons). In this application, they are also known as "draperies". Curtains hung over a doorway are known as portières. Curtains come in a variety of shapes, materials, sizes, colours, and patterns. They often have their own sections within department stores, while some shops are completely dedicated to selling curtains. Curtains vary according to cleanability, ultraviolet light deterioration, oil and dust retention, noise absorption, fire res ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
A Breeze In The Curtains
A, or a, is the first letter and the first vowel of the Latin alphabet, used in the modern English alphabet, the alphabets of other western European languages and others worldwide. Its name in English is ''a'' (pronounced ), plural ''aes''. It is similar in shape to the Ancient Greek letter alpha, from which it derives. The uppercase version consists of the two slanting sides of a triangle, crossed in the middle by a horizontal bar. The lowercase version can be written in two forms: the double-storey a and single-storey ɑ. The latter is commonly used in handwriting and fonts based on it, especially fonts intended to be read by children, and is also found in italic type. In English grammar, " a", and its variant " an", are indefinite articles. History The earliest certain ancestor of "A" is aleph (also written 'aleph), the first letter of the Phoenician alphabet, which consisted entirely of consonants (for that reason, it is also called an abjad to distinguish it fro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Herculaneum
Herculaneum (; Neapolitan and it, Ercolano) was an ancient town, located in the modern-day ''comune'' of Ercolano, Campania, Italy. Herculaneum was buried under volcanic ash and pumice in the eruption of Mount Vesuvius in AD 79. Like the nearby city of Pompeii, Herculaneum is famous as one of the few ancient cities to be preserved nearly intact, as the ash that blanketed the town protected it against looting and elements. Although less known than Pompeii today, it was the first, and the only discovered buried Vesuvian city (in 1709) for a long time. Pompeii was revealed only in 1748 and identified in 1763. Unlike Pompeii, the mainly pyroclastic material that covered Herculaneum carbonized and preserved more wood in objects such as roofs, beds, and doors, as well as other organic-based materials such as food and papyrus. According to the traditional tale, the city was rediscovered by chance in 1709, during the drilling of a well. Remnants of the city, however, were already fou ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Opaque
Opacity or opaque may refer to: * Impediments to (especially, visible) light: ** Opacities, absorption coefficients ** Opacity (optics), property or degree of blocking the transmission of light * Metaphors derived from literal optics: ** In linguistics: *** Opaque context, a term to describe the linguistic context of co-referential terms *** Phonological opacity, a term in phonology *** Semantic opacity, the opposite of semantic transparency ** Opaque travel inventory, the market of selling unsold travel inventory at a discounted price * Musical works: ** ''Opacity'' (album) ** Opacities (EP) * Computer science: ** Measure of obscuration of background by "painting" an image, e.g. alpha channel ** Use of an opaque data type ** Property attributed to data that can be interpreted only by using an external entity, e.g. magic cookie In computing, a magic cookie, or just cookie for short, is a token or short packet of data passed between communicating programs. The cookie is often ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Absorption (electromagnetic Radiation)
In physics, absorption of electromagnetic radiation is how matter (typically electrons bound in atoms) takes up a photon's energy — and so transforms electromagnetic energy into internal energy of the absorber (for example, thermal energy). A notable effect is attenuation, or the gradual reduction of the intensity of light waves as they propagate through a medium. Although the absorption of waves does not usually depend on their intensity (linear absorption), in certain conditions (optics) the medium's transparency changes by a factor that varies as a function of wave intensity, and saturable absorption (or nonlinear absorption) occurs. Quantifying absorption Many approaches can potentially quantify radiation absorption, with key examples following. * The absorption coefficient along with some closely related derived quantities * The attenuation coefficient (NB used infrequently with meaning synonymous with "absorption coefficient") * The Molar attenuation coefficient (a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lace
Lace is a delicate fabric made of yarn or thread in an open weblike pattern, made by machine or by hand. Generally, lace is divided into two main categories, needlelace and bobbin lace, although there are other types of lace, such as knitted or crocheted lace. Other laces such as these are considered as a category of their specific craft. Knitted lace, therefore, is an example of knitting. This article considers both needle lace and bobbin lace. While some experts say both needle lace and bobbin lace began in Italy in the late 1500s, there are some questions regarding its origins. Originally linen, silk, gold, or silver threads were used. Now lace is often made with cotton thread, although linen and silk threads are still available. Manufactured lace may be made of synthetic fiber. A few modern artists make lace with a fine copper or silver wire instead of thread. Etymology The word lace is from Middle English, from Old French ''las'', noose, string, from Vulgar Latin *' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ninon
Ninon is a lightweight, sheer fabric made with plain or leno weaving, it is a suitable material for curtains, evening wear and lingerie. Ninon is made with variety of filament yarns such as polyester, silk, rayon or nylon. History Ninon is a French derivation from the name Anne. Originally it was made from highly twisted silk yarns, gradually changed to synthetic yarns such as rayon. In the early 20th century (1909), the Ninon silk was in use for dresses also. Types Initially there were two types of Ninons, single and double. The difference was with the number of ply or the twisted yarns used in weaving: one, two, or three. The finest and single Ninons are more popular. Structure and characteristics Ninon is a lightweight sheer material with good draping qualities. It is very thin and has a surface with a mild sheen. Ninon has an open mesh-like appearance and a crisp hand feel. Ninon has more transparency similar to Marquisette in comparison to its peers such as voile, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Marquisette
Marquisette is a lightweight, sheer fabric that has a structure similar to a mosquito net. Construction Marquisette is a very loose weave construction plain and sometimes with designs. Leno is one type of weaving the marquisette. Marquisette may be made with many natural or synthetic yarns, and the most common is nylon. The other variants are possible with cotton, silk, rayon, orlon and polyester. Use Marquisette is employed in certain undergarments, and is seen in dresses such as bridal wear and evening wear. It can commonly be seen in sheer draperies and curtains. See also * Ninon * Voile Voile is a soft, sheer fabric, usually made of 99% cotton or cotton blended with linen or polyester. The term is French for ''veil''. Because of its light weight, the fabric is mostly used in soft furnishing. In tropical climates, voile is used ... References External links * Net fabrics Textiles {{Textile-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Polyester
Polyester is a category of polymers that contain the ester functional group in every repeat unit of their main chain. As a specific material, it most commonly refers to a type called polyethylene terephthalate (PET). Polyesters include naturally occurring chemicals, such as in plants and insects, as well as synthetics such as polybutyrate. Natural polyesters and a few synthetic ones are biodegradable, but most synthetic polyesters are not. Synthetic polyesters are used extensively in clothing. Polyester fibers are sometimes spun together with natural fibers to produce a cloth with blended properties. Cotton-polyester blends can be strong, wrinkle- and tear-resistant, and reduce shrinking. Synthetic fibers using polyester have high water, wind and environmental resistance compared to plant-derived fibers. They are less Fireproofing, fire-resistant and can melt when ignited. Liquid crystalline polyesters are among the first industrially used liquid crystal polymers. They are use ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Light Absorption
In physics, absorption of electromagnetic radiation is how matter (typically electrons bound in atoms) takes up a photon's energy — and so transforms radiant energy, electromagnetic energy into internal energy of the absorber (for example, thermal energy). A notable effect is attenuation, or the gradual reduction of the Intensity (physics), intensity of light waves as they wave propagation, propagate through a medium. Although the absorption of waves does not usually depend on their intensity (linear absorption), in certain conditions (optics) the medium's transparency changes by a factor that varies as a function of wave intensity, and saturable absorption (or nonlinear absorption) occurs. Quantifying absorption Many approaches can potentially quantify radiation absorption, with key examples following. * The absorption coefficient along with some closely related derived quantities * The attenuation coefficient (NB used infrequently with meaning synonymous with "absorption ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Window With Transluscent Curtains
A window is an opening in a wall, door, roof, or vehicle that allows the exchange of light and may also allow the passage of sound and sometimes air. Modern windows are usually glazed or covered in some other transparent or translucent material, a sash set in a frame in the opening; the sash and frame are also referred to as a window. Many glazed windows may be opened, to allow ventilation, or closed, to exclude inclement weather. Windows may have a latch or similar mechanism to lock the window shut or to hold it open by various amounts. In addition to this, many modern day windows may have a window screen or mesh, often made of aluminum or fibreglass, to keep bugs out when the window is opened. Types include the eyebrow window, fixed windows, hexagonal windows, single-hung, and double-hung sash windows, horizontal sliding sash windows, casement windows, awning windows, hopper windows, tilt, and slide windows (often door-sized), tilt and turn windows, transom windows, sideli ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Saqaliba
Saqaliba ( ar, صقالبة, ṣaqāliba, singular ar, صقلبي, ṣaqlabī) is a term used in medieval Arabic sources to refer to Slavs and other peoples of Central, Southern, and Eastern Europe, or in a broad sense to European slaves. The term originates from the Middle Greek '' slavos/sklavenos'' (Slav), which in Hispano-Arabic came to designate first Slavic slaves and then, similarly to the semantic development of the term in other West-European languages, foreign slaves in general. The word was often used to refer specifically to Slavic slaves, but it could also refer more broadly to Europeans traded by the Arab traders. There were several major routes for the trading of Slavic slaves into the Arab world: through Central Asia (Mongols, Tatars, Khazars, etc.) for the East Slavs; through the Balkans for the South Slavs; through Central and Western Europe for the West Slavs and to al-Andalus. The Volga trade route and other European routes, according to Ibrahim ibn Jakub (1 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mamluk
Mamluk ( ar, مملوك, mamlūk (singular), , ''mamālīk'' (plural), translated as "one who is owned", meaning " slave", also transliterated as ''Mameluke'', ''mamluq'', ''mamluke'', ''mameluk'', ''mameluke'', ''mamaluke'', or ''marmeluke'') is a term most commonly referring to non-Arab, ethnically diverse (mostly Southern Russian, Turkic, Caucasian, Eastern and Southeastern European) slave-soldiers and freed slaves who were assigned military and administrative duties, serving the ruling Arab dynasties in the Muslim world. The most enduring Mamluk realm was the knightly military class in Egypt in the Middle Ages, which developed from the ranks of slave-soldiers. Originally the Mamluks were slaves of Turkic origin from the Eurasian Steppe, but the institution of military slavery spread to include Circassians, Abkhazians, Georgians,"Relations of the Georgian Mamluks of Egypt with Their Homeland in the Last Decades of the Eighteenth Century". Daniel Crecelius and Gotcha ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
