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Blackout Curtains
Blackout refers to a foam-backed, opaque fabric used to black out light. Blackout fabrics are most commonly found in hotel rooms as curtain linings or drapery fabrics, blocking much of the light that would otherwise enter through a window when the curtains are closed. For travelers, third shift workers, and parents of babies, blackout is an essential element in the bedroom. Besides window coverings, other uses for blackout fabrics include wallpaper, movie projector screens and planetarium domes. They are particularly popular for shift workers who sleep during the day, for nurseries where total darkness can help babies sleep better, or for homes in urban areas with significant nighttime light pollution. Beyond light control, blackout curtains can also provide insulation, helping to regulate room temperature by reducing heat transfer, and offer noise reduction, contributing to a quiet environment. Manufacture The process of manufacturing blackout was invented by Baltimore-ba ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Total Blackout Cassette Roller Blind With Curtains
Total may refer to: Mathematics * Total, the summation of a set of numbers * Total order, a partial order without incomparable pairs * Total relation, which may also mean ** connected relation (a binary relation in which any two elements are comparable). * Total function, a partial function that is also a total relation Business * TotalEnergies, a French petroleum company, formerly known as Total * Total (cereal), a food brand by General Mills * Total, a brand of strained yogurt made by Fage * Total, a database management system marketed by Cincom Systems * Total Linhas Aéreas, a Brazilian airline * Total, a line of dental products by Colgate (toothpaste), Colgate Music and culture * Total (group), an American R&B girl group * ''Total: From Joy Division to New Order'', a compilation album * Total (Sebastian album), ''Total'' (Sebastian album) * Total (Total album), ''Total'' (Total album) * Total (Teenage Bottlerocket album), ''Total'' (Teenage Bottlerocket album) * Total (Seig ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wallpaper
Wallpaper is used in interior decoration to cover the interior walls of domestic and public buildings. It is usually sold in rolls and is applied onto a wall using wallpaper paste. Wallpapers can come plain as "lining paper" to help cover uneven surfaces and minor wall defects, "textured", plain with a regular repeating pattern design, or with a single non-repeating large design carried over a set of sheets. The smallest wallpaper rectangle that can be tiled to form the whole pattern is known as the pattern repeat. Wallpaper printing techniques include surface printing, rotogravure, screen-printing, rotary printing press, and digital printing. Modern wallpaper Modern wallpaper is made in long rolls which are hung vertically on a wall. Patterned wallpapers are designed so that the pattern "repeats", and thus pieces cut from the same roll can be hung next to each other so as to continue the pattern without it being easy to see where the join between two pieces occurs. In the ca ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Thermal Insulation
Thermal insulation is the reduction of heat transfer (i.e., the transfer of thermal energy between objects of differing temperature) between objects in thermal contact or in range of radiative influence. Thermal insulation can be achieved with specially engineered methods or processes, as well as with suitable object shapes and materials. Heat flow is an inevitable consequence of contact between objects of different temperature. Thermal insulation provides a region of insulation in which thermal conduction is reduced, creating a thermal break or thermal barrier, or thermal radiation is reflected rather than absorbed by the lower-temperature body. The insulating capability of a material is measured as the inverse of thermal conductivity, thermal conductivity (k). Low thermal conductivity is equivalent to high insulating capability (R-value (insulation), resistance value). In thermal engineering, other important properties of insulating materials are product density, density (ρ) ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rockland Industries
Rockland Industries, Inc. was a textile manufacturing company in the United States. The company was headquartered in Baltimore, Maryland, and had manufacturing facilities in Bamberg, South Carolina. Rockland Industries had sales in more than 90 countries worldwide, including the United States. History Rockland Industries was founded as Rockland Bleach and Dye Works in 1831 by three brothers from England - James, Robert, and John Wright. The company was formed in the Rockland Historic District of Brooklandville, an area of present-day Baltimore, and is recorded as the oldest corporation in Baltimore County. Rockland Bleach and Dye Works produced premier cotton and Irish woolens that were used all over the United States. The location of the headquarters and Baltimore manufacturing on Edison Highway was once Bugle Field, which was primarily used as a Negro league baseball field that was home to the Baltimore Elite Giants and Baltimore Black Sox from the late 1920s until aroun ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Noise Reduction
Noise reduction is the process of removing noise from a signal. Noise reduction techniques exist for audio and images. Noise reduction algorithms may distort the signal to some degree. Noise rejection is the ability of a circuit to isolate an undesired signal component from the desired signal component, as with common-mode rejection ratio. All signal processing devices, both analog and digital, have traits that make them susceptible to noise. Noise can be random with an even frequency distribution ( white noise), or frequency-dependent noise introduced by a device's mechanism or signal processing algorithms. In electronic systems, a major type of noise is ''hiss'' created by random electron motion due to thermal agitation. These agitated electrons rapidly add and subtract from the output signal and thus create detectable noise. In the case of photographic film and magnetic tape, noise (both visible and audible) is introduced due to the grain structure of the medium. In pho ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Room Temperature
Room temperature, colloquially, denotes the range of air temperatures most people find comfortable indoors while dressed in typical clothing. Comfortable temperatures can be extended beyond this range depending on humidity, air circulation, and other factors. In certain fields, like science and engineering, and within a particular context, room temperature can mean different agreed-upon ranges. In contrast, ambient temperature is the actual temperature, as measured by a thermometer, of the air (or other medium and surroundings) in any particular place. The ambient temperature (e.g. an unheated room in winter) may be very different from an ideal ''room temperature''. Food and beverages may be served at "room temperature", meaning neither heated nor cooled. Comfort temperatures Comfort temperature is interchangeable with neutral temperature in the scientific literature, which can be calculated through regression analysis between thermal sensation votes and indoor temperature. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nursery (room)
A nursery is a bedroom within a house or other dwelling set aside for an infant or toddler. Historically, European nurseries had little decorations and were away from visitors' sight. An article in the 1842 British ''Cyclopedia of Domestic Medicine and Surgery'' instructed the readers to never use a shaded room for a nursery and stressed the importance of ventilation. The author, Thomas Andrew, also suggested using two rooms for the nursery to move between them during the cleaning. He neither encourages nor warns against adding colourful objects into the nursery, simply mentioning that they catch children's attention. Starting from 1870s, authors such as Mary Eliza Haweis started advocating for a more interactive approach: they stressed the importance of visual stimulation for children's development. As a result, colourful patterned wallpapers appeared on the market. The author of a 1900 article on nursery décor was concerned with the idea that spartan conditions with litt ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Planetarium
A planetarium (: planetariums or planetaria) is a theatre built primarily for presenting educational and entertaining shows about astronomy and the night sky, or for training in celestial navigation. A dominant feature of most planetariums is the large dome-shaped projection screen onto which scenes of stars, planets, and other celestial objects can be made to appear and move realistically to simulate their motion. The projection can be created in various ways, such as a star ball, slide projector, video, fulldome projector systems, and lasers. Typical systems can be set to simulate the sky at any point in time, past or present, and often to depict the night sky as it would appear from any point of latitude on Earth. Planetaria range in size from the 37 meter dome in St. Petersburg, Russia (called "Planetarium No 1") to three-meter inflatable portable domes where attendees sit on the floor. The largest planetarium in the Western Hemisphere is the Jennifer Chalsty Planetariu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Projection Screen
A projection screen is an installation consisting of a surface and a support structure used for displaying a projected image for the view of an audience. Projection screens may be permanently installed on a wall, as in a movie theater, mounted to or placed in a ceiling using a rollable projection surface that retracts into a casing (these can be motorized or manually operated), painted on a wall, or portable with tripod or floor rising models as in a office, conference room or other non-dedicated viewing space. Another popular type of portable screens are inflatable screens for outdoor movie screening (Outdoor cinema, open-air cinema). Uniformly white or grey screens are used almost exclusively as to avoid any discoloration to the image, while the most desired brightness of the screen depends on a number of variables, such as the low-key lighting, ambient light level and the luminous power of the image source. Flat or curved screens may be used depending on the optics used to ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bedroom
A bedroom or bedchamber is a room situated within a residential or accommodation unit characterized by its usage for sleeping. A typical Western world, western bedroom contains as bedroom furniture one or two beds, a clothes closet, and bedside table and dressing table, both of which usually contain drawer (furniture), drawers. In dwellings with multiple stories, bedrooms are often on the upper floors. Beds range from a crib for an infant; a single or twin bed for a toddler, child, teenager or single adult; to bigger sizes like a full, double, queen, king or California king). Beds and bedrooms are often devised to create barriers to insects and vermin, especially mosquitoes, and to dampen or contain light or noise to aid sleep and privacy. History In the 14th century, the lower class slept on mattresses that were stuffed with hay and broom straws. Servants usually slept in various rooms, rolling up and putting away their bedding during the day. During the 16th century, mattr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Foam Rubber
Foam rubber (also known as cellular rubber, sponge rubber, or expanded rubber) is rubber that has been made with a foaming agent so that its structure is an air-filled matrix. Commercial foam rubber is generally made of synthetic rubber, natural latex, or polyurethane. Latex foam rubber, used in mattresses, is well known for its endurance. Polyurethane is a thermosetting polymer that comes from combination of methyl di-isocyanate and polyethylene and some chemical additives. Manufacturing history Foam rubber was first made in 1929, by Edward A. Murphy (chemist), E. A. Murphy and Eric Owen, two research chemists at Dunlop Rubber, who used whipped latex. In 1937, isocyanate-based materials were first used to make foam rubber. After World War II, styrene-butadiene rubber replaced many natural types of foam. Foam rubber has been used commercially for a wide range of applications since the 1940s. Polyether polyurethane rubber was discovered and patented in the 1950s, by Charles C. Pri ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Third Shift
The shift plan, rota or roster (esp. British) is the central component of a shift schedule in shift work. The schedule includes considerations of shift overlap, shift change times and alignment with the clock, vacation, training, shift differentials, holidays, etc. The shift plan determines the sequence of work (W) and free (F) days within a shift system. Notation A notation used often identifies day (D), swing (S) and night (N) shifts for the W days and O (off) for rest days. ; W: work days :; D: day shift, 1st shift, early shift :: This shift often occurs from either 06:00 or 07:00 to either 14:00 or 15:00 for eight-hour shifts, and from 06:00 to 18:00 for twelve-hour shifts. :; S: swing shift, 2nd shift, late shift, back shift, afternoon shift :: This shift often occurs from either 14:00 or 15:00 to either 22:00 or 23:00 for eight-hour shifts, and is not used with twelve-hour shifts. :; N: night shift, 3rd shift, graveyard shift :: This shift often occurs from either 22:00 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
