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Leg Rope
A leg rope or surfboard leash is a urethane cord attached to the deck of a surfboard, down near the tail. It prevents the surfboard from being swept away by waves and stops runaway surfboards from hitting other surfers and swimmers. Modern leashes consist of a urethane cord where one end has a band with a velcro strap attached to the surfer's trailing foot, and the opposite has a velcro strap attached to the tail end of the surfboard. Should the surfer fall while riding a wave, the surfboard will not be swept away, thus allowing the surfer to quickly recover his surfboard and return to the take-off zone. Background The leash was invented in the 1970s amidst controversy that it was a dangerous accessory. Prior to leashes introduction in 1971, surfers who fell off their boards had to swim to retrieve them with runaway boards being an inconvenience to the surfer and a danger to other surfers. Initially, people expressed concern that if a surfer fell while riding a wave and wearing ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Polyurethane
Polyurethane (; often abbreviated PUR and PU) is a class of polymers composed of organic chemistry, organic units joined by carbamate (urethane) links. In contrast to other common polymers such as polyethylene and polystyrene, polyurethane term does not refer to the single type of polymer but a group of polymers. Unlike polyethylene and polystyrene, polyurethanes can be produced from a wide range of starting materials resulting in various polymers within the same group. This chemical variety produces polyurethanes with different chemical structures leading to many List of polyurethane applications, different applications. These include rigid and flexible foams, and coatings, adhesives, Potting (electronics), electrical potting compounds, and fibers such as spandex and polyurethane laminate (PUL). Foams are the largest application accounting for 67% of all polyurethane produced in 2016. A polyurethane is typically produced by reacting a polymeric isocyanate with a polyol. Since a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Suction Cup
A suction cup, also known as a sucker, is a device or object that uses the negative Pressure#Fluid pressure, fluid pressure of air or water to adhere to Porosity, nonporous surfaces, creating a Vacuum, partial vacuum. Suction cups occur in nature on the bodies of some animals such as octopuses and squid, and have been reproduced artificially for numerous purposes. Theory The working face of the suction cup is made of elastic, flexible material and has a curved surface. When the center of the suction cup is pressed against a flat, non-Porous medium, porous surface, the volume of the space between the suction cup and the flat surface is reduced, which causes the air or water between the cup and the surface to be expelled past the rim of the circular cup. The cavity which develops between the cup and the flat surface has little to no air or water in it because most of the fluid has already been forced out of the inside of the cup, causing a lack of pressure. The pressure differ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cuff
A cuff is a layer of fabric at the lower edge of the sleeve of a garment (shirt, coat, jacket, etc.) at the wrist, or at the ankle end of a trouser leg. The function of turned-back cuffs is to protect the cloth of the garment from fraying, and, when frayed, to allow the cuffs to be readily repaired or replaced, without changing the garment. Cuffs are made by turning back (folding) the material, or a separate band of material can be sewn on, or worn separately, attached either by buttons or studs. A cuff may display an ornamental border or have lace or some other trimming. In US usage, the word ''trouser cuffs'' refers to the folded, finished bottoms of the legs of a pair of trousers. In the UK, while this usage is now sometimes followed, the traditional term for the turned up trouser hem is 'turnup'. History Between the 15th and 18th centuries, rich men often wore sleeve cuffs ornamented with fine lace. Catholic clergy have the cuffs of their choir dress ornamented with fine ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Modern Architecture
Modern architecture, also called modernist architecture, or the modern movement, is an architectural movement and style that was prominent in the 20th century, between the earlier Art Deco and later postmodern movements. Modern architecture was based upon new and innovative technologies of construction (particularly the use of glass, steel, and concrete); the principle functionalism (i.e. that form should follow function); an embrace of minimalism; and a rejection of ornament. According to Le Corbusier, the roots of the movement were to be found in the works of Eugène Viollet-le-Duc, while Mies van der Rohe was heavily inspired by Karl Friedrich Schinkel. The movement emerged in the first half of the 20th century and became dominant after World War II until the 1980s, when it was gradually replaced as the principal style for institutional and corporate buildings by postmodern architecture. Origins Modern architecture emerged at the end of the 19th century from ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bracelet Néoprène D'un Leash
A bracelet is an article of jewellery that is worn around the wrist. Bracelets may serve different uses, such as being worn as an ornament. When worn as ornaments, bracelets may have a supportive function to hold other items of decoration, such as charms. Medical and identity information can be marked on some bracelets, such as allergy bracelets, hospital patient-identification tags, and bracelet tags for newborn babies. Bracelets may be worn to signify a certain phenomenon, such as breast cancer awareness, for religious/cultural purposes or as a sign of LGBTQ pride. If a bracelet is a single, inflexible loop, it is often called a ''bangle''. When it is worn around the ankle it is called an ''ankle bracelet'' or '' anklet''. A ''boot bracelet'' is used to decorate boots. Bracelets can be manufactured from metal, leather, cloth, plastic, bead or other materials, and jewellery bracelets sometimes contain jewels, rocks, wood, shells, crystals, metal, or plastic hoops, pearls a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Australian Design Award
The Australian Good Design Awards, formerly known as the Australian International Design Awards and as the Australian Design Awards, is an Australian awards program operated by Good Design Australia. The awards program was originally established in 1958 by the Industrial Design Council of Australia (IDCA), and recognizes achievements in industrial design. The Australian International Design Awards has been recognized by the Commonwealth Government and the International Council of Societies of Industrial Design as a promotional body for the Australian design industry. Awards There are five types of accolades issued in the Australian Good Design Awards program: * Australian Good Design Award Winner accolade (recognizing good design) * Australian Good Design Award Gold accolade (recognizing design excellence) * Australian Good Design Award Best in Class accolade (recognizing best in class design in each category) * Australian Good Design Award for Sustainability (recognizing ex ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Copyright
A copyright is a type of intellectual property that gives its owner the exclusive legal right to copy, distribute, adapt, display, and perform a creative work, usually for a limited time. The creative work may be in a literary, artistic, educational, or musical form. Copyright is intended to protect the original expression of an idea in the form of a creative work, but not the idea itself. A copyright is subject to limitations based on public interest considerations, such as the fair use doctrine in the United States and fair dealings doctrine in the United Kingdom. Some jurisdictions require "fixing" copyrighted works in a tangible form. It is often shared among multiple authors, each of whom holds a set of rights to use or license the work, and who are commonly referred to as rights holders. These rights normally include reproduction, control over derivative works, distribution, public performance, and moral rights such as attribution. Copyrights can be granted by ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Raglan, New Zealand
Raglan ( or ) is a small beachside town located west of Hamilton, New Zealand on New Zealand State Highway 23, State Highway 23. It is known for its surfing, and volcanic black sand beaches. History The Ngāti Māhanga iwi occupied the area around Raglan in the late 18th century. There are at least 81 archaeological sites in the area, mainly near the coast. Limited radiocarbon dating puts the earliest sites at about 1400AD. The Māori people named the site ("the long pursuit"). One tradition says that Tainui (canoe), Tainui priest, Rakataura, crossed Whāingaroa on his way to Kāwhia. Another says it was among the places the early Te Arawa explorer, Kahumatamomoe, with his nephew Īhenga, visited on their expedition from Maketu, Maketū. The first Europeans to settle in the area, the Rev James and Mary Wallis, Wesleyan missionaries, were embraced and welcomed by local Māori in 1835. European settlement, including large scale conversion of land to pasture, began in the mi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bungee Cord
file:Bungee Cord PICT6882a.jpg, Bungee cords equipped with metal hooks A bungee cord (sometimes spelled bungie; also known as a shock cord or an ocky strap) is an elastomer, elastic cord composed of one or more elastic strands forming a core, usually covered in a woven cotton or polypropylene sheath. The sheath does not materially extend elastically, but it is braided with its strands spiraling around the core so that a longitudinal pull causes it to squeeze the core, transmitting the core's elastic compression to the longitudinal extension of the sheath and cord. Specialized bungees, such as some used in bungee jumping, may be made entirely of elastic strands. Uses file:Moscow Russia Park Kid on Bungee_Cord.jpg, upA child on a bungee cord device in Moscow, Russia Bungee cords have been used to provide a lightweight suspension for aircraft undercarriages from before World War I, and are still used on many small homebuilt aircraft where weight remains critical. Bungee cords were ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Deformation (engineering)
In engineering, deformation (the change in size or shape of an object) may be ''elastic'' or ''plastic''. If the deformation is negligible, the object is said to be ''rigid''. Main concepts Occurrence of deformation in engineering applications is based on the following background concepts: * ''Displacements'' are any change in position of a point on the object, including whole-body translations and rotations ( rigid transformations). * ''Deformation'' are changes in the relative position between internals points on the object, excluding rigid transformations, causing the body to change shape or size. * ''Strain'' is the ''relative'' ''internal'' deformation, the dimensionless change in shape of an infinitesimal cube of material relative to a reference configuration. Mechanical strains are caused by mechanical stress, ''see stress-strain curve''. The relationship between stress and strain is generally linear and reversible up until the yield point and the deformation is ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Accident
An accident is an unintended, normally unwanted event that was not deliberately caused by humans. The term ''accident'' implies that the event may have been caused by Risk assessment, unrecognized or unaddressed risks. Many researchers, insurers and attorneys who specialize in unintentional Injury in humans, injury prefer to avoid using the term ''accident'', and focus on conditions that increase risk of severe injury or that reduce injury incidence and severity. For example, when a tree falls down during a wind storm, its fall may not have been directly caused by human error, but the tree's type, size, health, location, or improper maintenance may have contributed to the result. Most car crashes are the result of dangerous behavior and not purely ''accidents''; however, English speakers started using that word in the mid-20th century as a result of media manipulation by the US automobile industry. Accidental deaths were much less frequent before high-powered machinery began to sp ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Malibu, California
Malibu ( ; ; ) is a beach city in the Santa Monica Mountains region of Los Angeles County, California, about west of downtown Los Angeles. It is known for its Mediterranean climate, its strip of beaches stretching along the Pacific Ocean coast, and for its longtime status as the home of numerous affluent Cinema of the United States, Hollywood celebrities and executives. Although a high proportion of its residents are entertainment industry figures with multi-million dollar mansions, Malibu also features several middle-class, middle- and upper-middle class, upper-middle-class neighborhoods. The Pacific Coast Highway (California State Route 1, State Route 1) traverses the city, following along the South Coast (California), South Coast of California. As of the 2020 US Census, 2020 census, the city's population was 10,654. The Palisades Fire, 2025 Palisades Fire devastated Malibu, with almost all of the beachfront homes near its center destroyed. Nicknamed "The 'Bu" by surfers an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
