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Balloon Light
Balloon lights (also called lighting balloons) are a specialized type of luminaire used primarily for lighting in the motion picture industry, night highway construction, incident management, and public security applications such as police checkpoints. These luminaires typically consist of one or more high-intensity lamps surrounded by a translucent fabric balloon. The balloon acts as a diffuser to soften and disperse the light. The upper portion of the balloon sometimes has a reflective inner coating to direct more of the light downward. Some commercial products use a blower to expand the balloon, while others have an umbrella-like internal wire frame. The device is essentially an industrial version of a Japanese paper lantern. The lighting balloon was first patented in Germany on October 26, 1924 (patent #427894). Until the 1990s, several patents were issued, although the application was utilized very little in Western countries. The lighting balloon industry has been greatl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Maintenance SNCF
Maintenance may refer to: Biological science * Maintenance of an organism * Maintenance respiration Non-technical maintenance * Alimony, also called ''maintenance'' in British English * Champerty and maintenance, two related legal doctrines * Child support, also commonly called "child maintenance" * Feudal maintenance, system of funding armies Technical maintenance * Maintenance (technical) * Aircraft maintenance * Bicycle maintenance * Bus maintenance * Car maintenance * Train maintenance * Property maintenance * Railroad track maintenance * Software maintenance Software maintenance in software engineering is the modification of a software product after delivery to correct faults, to improve performance or other attributes. A common perception of maintenance is that it merely involves fixing defects. H ... Some kinds of technical maintenance * Condition-based maintenance * Corrective maintenance * Planned maintenance * Predictive maintenance * Prev ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rang De Basanti
''Rang De Basanti'' () is a 2006 Indian drama film written, produced and directed by Rakeysh Omprakash Mehra, and co-written by Rensil D'Silva. The film features an ensemble cast consisting of Aamir Khan, Siddharth, R. Madhavan, Atul Kulkarni, Soha Ali Khan, Sharman Joshi, Kunal Kapoor and British actress Alice Patten. It follows a British film student traveling to India to document the story of five freedom fighters of the Indian revolutionary movement. She befriends and casts five young men in the film, which inspires them to fight against the corruption of their own government. Shot primarily in New Delhi, The film was released globally on 20 January 2006. Upon release, the film broke all opening box office records in India, becoming the country's highest-grossing film in its opening weekend and holding the highest opening-day collections for a Hindi film. It received critical acclaim, winning the National Film Award for Best Popular Film, and being nominated for Best For ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mercury-vapor Lamp
A mercury-vapor lamp is a gas-discharge lamp that uses an electric arc through vaporized mercury to produce light. The arc discharge is generally confined to a small fused quartz arc tube mounted within a larger soda lime or borosilicate glass bulb. The outer bulb may be clear or coated with a phosphor; in either case, the outer bulb provides thermal insulation, protection from the ultraviolet radiation the light produces, and a convenient mounting for the fused quartz arc tube. Mercury vapor lamps are more energy efficient than incandescent lamps with luminous efficacies of 35 to 55 lumens/watt. Their other advantages are a long bulb lifetime in the range of 24,000 hours and a high intensity, clear white light output. For these reasons, they are used for large area overhead lighting, such as in factories, warehouses, and sports arenas as well as for streetlights. Clear mercury lamps produce a greenish light due to mercury's combination of spectral lines. This is not flatt ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Metal Halide Lamp
A metal (from Greek μέταλλον ''métallon'', "mine, quarry, metal") is a material that, when freshly prepared, polished, or fractured, shows a lustrous appearance, and conducts electricity and heat relatively well. Metals are typically ductile (can be drawn into wires) and malleable (they can be hammered into thin sheets). These properties are the result of the ''metallic bond'' between the atoms or molecules of the metal. A metal may be a chemical element such as iron; an alloy such as stainless steel; or a molecular compound such as polymeric sulfur nitride. In physics, a metal is generally regarded as any substance capable of conducting electricity at a temperature of absolute zero. Many elements and compounds that are not normally classified as metals become metallic under high pressures. For example, the nonmetal iodine gradually becomes a metal at a pressure of between 40 and 170 thousand times atmospheric pressure. Equally, some materials regarded as metals ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hydrargyrum Medium-arc Iodide Lamp
Hydrargyrum medium-arc iodide (HMI) is the trademark name of Osram's brand of metal halide lamp, metal-halide gas discharge medium arc-length lamp, made specifically for film and entertainment applications. ''Hydrargyrum'' comes from the Greek language, Greek name for the element mercury (element), mercury. An HMI lamp uses mercury vapour mixed with metal halides in a quartz-glass envelope, with two tungsten electrodes of medium arc separation. Unlike traditional lighting units using incandescent light bulbs, HMIs need electrical ballast (electrical), ballasts, which are separated from the head via a header cable, to limit current and supply the proper voltage. The lamp operates by creating an electrical arc between two electrodes within the bulb that excites the pressurized mercury vapour and metal halides, and provides very high light output with greater luminous efficacy, efficiency than incandescent lighting units. The efficiency advantage is near fourfold, with approximatel ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Halogen Lamp
A halogen lamp (also called tungsten halogen, quartz-halogen, and quartz iodine lamp) is an incandescent lamp consisting of a tungsten filament sealed in a compact transparent envelope that is filled with a mixture of an inert gas and a small amount of a halogen, such as iodine or bromine. The combination of the halogen gas and the tungsten filament produces a halogen-cycle chemical reaction, which redeposits evaporated tungsten on the filament, increasing its life and maintaining the clarity of the envelope. This allows the filament to operate at a higher temperature than a standard incandescent lamp of similar power and operating life; this also produces light with higher luminous efficacy and color temperature. The small size of halogen lamps permits their use in compact optical systems for projectors and illumination. The small glass envelope may be enclosed in a much larger outer glass bulb, which has a lower temperature, protects the inner bulb from contamination, and mak ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Grip (job)
In the United States, Canada and the United Kingdom, grips are camera support equipment technicians in the filmmaking and video production industries. They constitute their own department on a film set and are directed by a key grip. Grips have two main functions: The first is to work closely with the camera department to provide camera support, especially if the camera is mounted to a dolly, crane, or in an unusual position, such as the top of a ladder. Some grips may specialize in operating camera dollies or camera cranes. The second function is to work closely with the electrical department to create lighting set-ups necessary for a shot under the direction of the director of photography. In the UK, Australia and most parts of Europe, grips are not involved in lighting. In the "British System", adopted throughout Europe and the British Commonwealth (excluding Canada), a grip is solely responsible for camera mounting and support. The term "grip" is derived from an older te ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cylinder (geometry)
A cylinder (from ) has traditionally been a three-dimensional solid, one of the most basic of curvilinear geometric shapes. In elementary geometry, it is considered a prism with a circle as its base. A cylinder may also be defined as an infinite curvilinear surface in various modern branches of geometry and topology. The shift in the basic meaning—solid versus surface (as in ball and sphere)—has created some ambiguity with terminology. The two concepts may be distinguished by referring to solid cylinders and cylindrical surfaces. In the literature the unadorned term cylinder could refer to either of these or to an even more specialized object, the ''right circular cylinder''. Types The definitions and results in this section are taken from the 1913 text ''Plane and Solid Geometry'' by George Wentworth and David Eugene Smith . A ' is a surface consisting of all the points on all the lines which are parallel to a given line and which pass through a fixed plane curve in a pla ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cube
In geometry, a cube is a three-dimensional solid object bounded by six square faces, facets or sides, with three meeting at each vertex. Viewed from a corner it is a hexagon and its net is usually depicted as a cross. The cube is the only regular hexahedron and is one of the five Platonic solids. It has 6 faces, 12 edges, and 8 vertices. The cube is also a square parallelepiped, an equilateral cuboid and a right rhombohedron a 3-zonohedron. It is a regular square prism in three orientations, and a trigonal trapezohedron in four orientations. The cube is dual to the octahedron. It has cubical or octahedral symmetry. The cube is the only convex polyhedron whose faces are all squares. Orthogonal projections The ''cube'' has four special orthogonal projections, centered, on a vertex, edges, face and normal to its vertex figure. The first and third correspond to the A2 and B2 Coxeter planes. Spherical tiling The cube can also be represented as a spherical tiling, and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sphere
A sphere () is a Geometry, geometrical object that is a solid geometry, three-dimensional analogue to a two-dimensional circle. A sphere is the Locus (mathematics), set of points that are all at the same distance from a given point in three-dimensional space.. That given point is the centre (geometry), centre of the sphere, and is the sphere's radius. The earliest known mentions of spheres appear in the work of the Greek mathematics, ancient Greek mathematicians. The sphere is a fundamental object in many fields of mathematics. Spheres and nearly-spherical shapes also appear in nature and industry. Bubble (physics), Bubbles such as soap bubbles take a spherical shape in equilibrium. spherical Earth, The Earth is often approximated as a sphere in geography, and the celestial sphere is an important concept in astronomy. Manufactured items including pressure vessels and most curved mirrors and lenses are based on spheres. Spheres rolling, roll smoothly in any direction, so mos ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vancouver Olympics
The 2010 Winter Olympics, officially known as the XXI Olympic Winter Games (french: XXIes Jeux olympiques d'hiver) and also known as Vancouver 2010 ( lut, K'emk'emeláy̓ 2010), were an international winter multi-sport event held from February 12 to 28, 2010 in Vancouver, British Columbia, Canada, with some events held in the surrounding suburbs of Richmond, British Columbia, Richmond, West Vancouver and the University of British Columbia, and in the nearby resort town of Whistler, British Columbia, Whistler. It was regarded by the International Olympic Committee, Olympic Committee to be among the most successful Olympic games in history, in both attendance and coverage. Approximately 2,600 athletes from 82 nations participated in 86 events in fifteen disciplines. Both the Winter Olympics, Winter Olympic and 2010 Winter Paralympics, Paralympic Games were organized by the Vancouver Organizing Committee for the 2010 Olympic and Paralympic Winter Games, Vancouver Organizing Committee ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Singapore Grand Prix
The Singapore Grand Prix; ta, சிங்கப்பூர் கிராண்ட் பிரிக்ஸ் is a motor racing event which forms part of the Formula One World Championship. The event takes place on the Marina Bay Street Circuit and was the inaugural night race and first street circuit in Asia designed for Formula One races. The original Singapore Grand Prix was held at Thomson Road from 1966 to 1973, before returning to the calendar in 2008 at Marina Bay. Fernando Alonso won the inaugural Formula One edition of the renewed Grand Prix, driving for the Renault team amid controversial circumstances, when it emerged a year later that his teammate Nelson Piquet Jr. had been ordered to crash on purpose by senior team management to bring out the safety car at a time chosen to benefit Alonso. The race itself was also notable for being the 800th Formula One World Championship race since its inception in 1950, and the first ever Formula One race held at night. Since ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
