chimney |
skirt |
top 10 words in brain distribution (in article): build wood city structure wall design form type house floor |
top 10 words in brain distribution (in article): light produce variety time type male world form century female |
top 10 words in brain distribution (not in article): material paint size surface window cell tree frame store people |
top 10 words in brain distribution (not in article): animal plant drink species lamp fruit water wine beer grow |
times more probable under chimney 30 20 10 6 4 2.5 1.25 1 1.25 2.5 4 6 10 20 30 times more probable under skirt (words not in the model) | |
A chimney'" is a structure for venting hot flue gases or smoke from a boiler, stove, furnace or fireplace to the outside atmosphere. Chimneys are typically vertical, or as near as possible to vertical, to ensure that the gases flow smoothly, drawing air into the combustion in what is known as the stack, or chimney, effect. The space inside a chimney is called a "flue". Chimneys may be found in buildings, steam locomotives and ships. In the US, the term smokestack'" (colloquially, "'stack'") is also used when referring to locomotive chimneys. The term "'funnel'" is generally used for ships' chimneys and sometimes to refer to locomotive chimneys.. Chimneys are tall to increase their draw of air for combustion and to disperse pollutants in the flue gases over a greater area so as to reduce the pollutant concentrations in compliance with regulatory or other limits. History. Romans used tubes inside the walls to draw smoke out of bakeries but real chimneys appeared only in northern Europe in the 12th century. Industrial chimneys became common in the late 18th century. The earliest extant example of an English chimney is at Conisborough Keep in Yorkshire, which dates from 1185 AD. Chimneys have traditionally been built of brick, both in small and large buildings. Early chimneys were of a simple brick construction. Later chimneys were constructed by placing the bricks around tile liners. To control downdrafts venting caps (often called "chimney pots") with a variety of designs are sometimes placed on the top of chimneys. In the eighteenth and nineteenth centuries, the methods used to extract lead from its ore produced large amounts of toxic fumes. In the north of England, long near-horizontal chimneys were built, often more than 3 km (2 mi) long, which typically terminated in a short vertical chimney in a remote location where the fumes would cause less harm. Lead and silver deposits formed on the inside of these long chimneys, and periodically workers would be sent along the chimneys to scrape off these valuable deposits. Construction. Due to brick's limited ability to handle transverse loads, chimneys in houses were often built in a "stack", with a fireplace on each floor of the house sharing a single chimney, often with such a stack at the front and back of the house. Today's central heating systems have made chimney placement less critical, and the use of non-structural gas vent pipe allows a flue gas conduit to be installed around obstructions and through walls. In fact, many modern high-efficiency heating appliances do not require a chimney. Such appliances are typically installed near an outside wall, and a noncombustible wall thimble allows vent pipe to be run directly through the outside wall. Industrial chimneys are commonly referred to as flue gas stacks and are typically external structures, as opposed to being built into the wall of a building. They are generally located adjacent to a steam-generating boiler or industrial furnace and the gases are carried to it with ductwork. Today the use of reinforced concrete has almost entirely replaced brick as a structural component in the construction of industrial chimneys. Refractory bricks are often used as a lining, particularly if the type of fuel being burned generates flue gases containing acids. Modern industrial chimneys sometimes consist of a concrete windshield with a number of flues on the inside. The 300 metre chimney at Sasol Three consists of a 26 metre diameter windshield with four 4.6 metre diameter concrete flues which are lined with refractory bricks built on rings of corbels spaced at 10 metre intervals. The reinforced concrete can be cast by conventional formwork or sliding formwork. The height is to ensure the pollutants are dispersed over a wider area to meet legislative or safety requirements. Chimney tops. A chimney pot is placed on top of the chimney to inexpensively extend the length of the chimney, and to improve the chimney's draft. A chimney with more than one pot on it indicates that there is more than one fireplace on different floors sharing the chimney. A chimney cowl is placed on top of the chimney to prevent birds and squirrels from nesting in the | A skirt'" is a tube- or cone-shaped garment that hangs from the waist and covers all or part of the legs. In European culture, skirts are usually considered women's clothing. However, there are exceptions. The kilt is a traditional men's garment in Scotland, and some fashion designers, such as Jean-Paul Gaultier, have shown men's skirts. At its simplest, a skirt can be a draped garment made out of a single piece of material (such as pareos), but most skirts are fitted to the body at the waist and fuller below, with the fullness introduced by means of dart, gores, pleats, or panels. Modern skirts are usually made of light to mid-weight fabrics, such as denim, jersey, worsted, or poplin. Skirts of thin or clingy fabrics are often worn with slips to make the material of the skirt drape better and for modesty. The hemline of skirts can be as high as the upper thigh or as low as the ground, depending on the whims of fashion and the modesty or personal taste of the wearer. Some medieval upper-class women wore skirts over 3 metres in diameter at the bottom. At the other extreme, the miniskirts of the 1960s were minimal garments that may have barely covered the underwear when seated. Costume historians typically use the word "petticoat" to describe skirt-like garments of the 18th century or earlier. History. Skirts have been worn by men and women from many cultures, such as the lungi, kanga and sarong worn in South Asia and Southeast Asia, and the kilt worn in Scotland. The earliest known culture to have females wear miniskirts were the Duan Qun Miao, which literally meant "short skirt Miao" in Chinese. This was in reference to the short miniskirts "that barely cover the buttocks" worn by women of the tribe, and which were "probably shocking" to Han Chinese observers in medieval and early modern times. Skirts in the 19th century. During the nineteenth century the cut of women's dresses in western culture varied more widely than in any other century. Waistlines started just below the bust (the Empire silhouette) and gradually sank to the natural waist. Skirts started fairly narrow and increased dramatically to the hoopskirt and crinoline-supported styles of the 1860s; then fullness was draped and drawn to the back by means of bustles. Skirts in the 20th and 21st centuries. Beginning around 1915, hemlines for daytime dresses left the floor for good. For the next fifty years fashionable skirts became short (1920s). then long (1930s), then shorter (the War Years with their restrictions on fabric), then long (the New Look), then shortest of all during the 1960s, when skirts became as short as possible while avoiding exposure of underwear, which was considered taboo. Since the 1970s and the rise of pants for women as an option for all but the most formal of occasions, no one skirt length has dominated fashion for long, with short and ankle-length styles often appearing side-by-side in fashion magazines and catalogs. Male wear. There are a number of male garments which fall under the catergory of "skirt" or "dress." These go by a variety of names and form part of the traditional dress for men from various cultures. Usage varies- the dhoti is part of everyday dress on the Indian subcontinent while the kilt is more usually restricted to occasional wear and the foustanella is used almost exclusively as costume. Robes, which are a type of dress for men, have existed in many cultures, including the Japanese kimono, the Chinese cheongsam, the Arabic thobe, and the African Senegalese kaftan. Robes are also used in some religious orders, such as the cassock in Christianity and various robes and cloaks that may be used in pagan rituals. Examples of men's skirts and skirt like garments from various cultures include: In the Western world skirts, dresses and similar garments are considered primarily women's clothing today although historically that was not the case. The wearing of skirts by men in these areas is generally seen as cross-dressing although some fashion designers such as Jean-Paul Gaultier have produced skirts for men and kilts are widely accepted in some situations. |