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Net (device)
A net comprises Thread (yarn), threads or yarns knotted and twisted into a grid-like structure which blocks the passage of large items, while letting small items and fluids pass. It requires less material than something sheet-like, and provides a degree of Transparency and translucency, transparency, as well as flexibility and lightness. Nets have been constructed by human beings since at least the Mesolithic period for use in capturing or retaining things. Their open structure provide lightness and flexibility that allow them to be carried and manipulated with relative ease, making them valuable for methodical tasks such as hunting, fishing, sleeping, and carrying. History The oldest nets found are from the Mesolithic era, but nets may have existed in the Upper Paleolithic, Upper Paleolithic era. Nets are typically made of perishable materials and leave little archeological record. Some nets are preserved in ice or bogs, and there are also Use of animals during the Gravettian ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cargo Net 01
In transportation, cargo refers to goods transported by land transport, land, water transport, water or air transport, air, while freight refers to its conveyance. In economics, freight refers to goods transported at a freight rate for Commerce, commercial gain. The term cargo is also used in case of goods in the cold chain, cold-chain, because the perishable inventory is always in transit towards a final end-use, even when it is held in refrigeration, cold storage or other similar climate-controlled facilities, including warehouses. Multi-modal container units, designed as reusable carriers to facilitate unit load handling of the goods contained, are also referred to as cargo, especially by shipping lines and logistics operators. When empty containers are shipped each unit is documented as a cargo and when goods are stored within, the contents are termed containerized cargo. Similarly, aircraft Unit load device, ULD boxes are also documented as cargo, with an associated packi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Linen
Linen () is a textile made from the fibers of the flax plant. Linen is very strong and absorbent, and it dries faster than cotton. Because of these properties, linen is comfortable to wear in hot weather and is valued for use in garments. Linen textiles can be made from flax plant fiber, yarn, as well as woven and knitted. Linen also has other distinctive characteristics, such as its tendency to wrinkle. It takes significantly longer to harvest than a material like cotton, although both are natural fibers. It is also more difficult to weave than cotton. Linen textiles appear to be some of the oldest in the world; their history goes back many thousands of years. Dyed flax fibers found in a cave in the Caucasus (present-day Georgia (country), Georgia) suggest the use of woven linen fabrics from wild flax may date back over 30,000 years. Linen was used in ancient civilizations including Mesopotamia and ancient Egypt, and linen is mentioned in the Bible. In the 18th century and be ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Net Sports
Net and wall games are pitch (sports field), court games where either a net (device), net separates the opponents or a wall serves to reflect the ball to the opponent. The object of these games is to hit or throw the ball or Badminton#Shuttlecock, bird over the net or against the wall back to the opponent. Play typically begins with one side ''serving'' the ball/bird by initially tossing or releasing it and then hitting/throwing it over the net or to the wall. This then starts a ''rally'', in which the sides alternate hitting/throwing the ball/bird. Players then score points whenever the opponent fails to return the ball/bird back. The criteria on what is considered a valid return varies between each sport (such as the number of times the ball may be touched or bounced on a player's side before it must go back). Sports like Real tennis, Padel and Wallyball use both net and walls. Some sports like Four square, Ballon au poing, Tamburello and Roundnet has the same logic of wall games ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ice Hockey
Ice hockey (or simply hockey in North America) is a team sport played on ice skates, usually on an Ice rink, ice skating rink with Ice hockey rink, lines and markings specific to the sport. It belongs to a family of sports called hockey. Two opposing teams use ice hockey sticks to control, advance, and Shot (ice hockey), shoot a vulcanized rubber hockey puck into the other team's net. Each Goal (ice hockey), goal is worth one point. The team with the highest score after an hour of playing time is declared the winner; ties are broken in Overtime (ice hockey), overtime or a Shootout (ice hockey), shootout. In a formal game, each team has six Ice skating, skaters on the ice at a time, barring any penalties, including a goaltender. It is a contact sport#Grades, full contact game and one of the more physically demanding team sports. The modern sport of ice hockey was developed in Canada, most notably in Montreal, where the first indoor ice hockey game, first indoor game was play ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bossaball
Bossaball is a team sport that originated in Brazil and was conceptualised by Belgian Filip Eyckmans in 2004. Bossaball is a ball game between two teams, combining elements of volleyball, football, and gymnastics with music into a sport. It is played on an inflatable court featuring a trampoline on each side of the net. The trampolines allow the players to bounce high enough to spike the ball over the net. The word "bossa", which is sometimes translated as "style, flair or attitude" in Indian Spanish, is commonly associated with Bossa Nova, a samba-influenced type of Brazilian music. The name Bossaball, therefore, expresses the aim to combine sports, music, and positive vibrations. Some other countries where Bossaball has been introduced include: Brazil, Argentina, Mexico, Turkey, Belgium, Netherlands, Spain, Germany, France, Switzerland, Portugal, Greece, Austria, Italy, Slovenia, Hungary, Czech Republic, Romania, Israel, Egypt, Saudi Arabia, Qatar, Kuwait, Singapore, Ch ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Basketball
Basketball is a team sport in which two teams, most commonly of five players each, opposing one another on a rectangular Basketball court, court, compete with the primary objective of #Shooting, shooting a basketball (ball), basketball (approximately in diameter) through the defender's Basket (basketball), hoop (a basket in diameter mounted high to a Backboard (basketball), backboard at each end of the court), while preventing the opposing team from shooting through their own hoop. A Field goal (basketball), field goal is worth two points, unless made from behind the 3 point line, three-point line, when it is worth three. After a foul, timed play stops and the player fouled or designated to shoot a technical foul is given one, two or three one-point free throws. The team with the most points at the end of the game wins, but if regulation play expires with the score tied, an additional period of play (Overtime (sports), overtime) is mandated. Players advance the ball by boun ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Soccer
Association football, more commonly known as football or soccer, is a team sport played between two teams of 11 Football player, players who almost exclusively use their feet to propel a Ball (association football), ball around a rectangular field called a Football pitch, pitch. The objective of the game is to Scoring in association football, score more goals than the opposing team by moving the ball beyond the goal line into a rectangular-framed Goal (sport), goal defended by the opposing team. Traditionally, the game has been played over two 45-minute halves, for a total match time of 90 minutes. With an estimated 250 million players active in over 200 countries and territories, it is the world's most popular sport. Association football is played in accordance with the Laws of the Game (association football), Laws of the Game, a set of rules that has been in effect since 1863 and maintained by the International Football Association Board, IFAB since 1886. The game is pla ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Goal (sport)
In sport, a goal may refer to either an instance of scoring, or to the physical structure or area where an attacking team must send the ball or puck in order to score points. The structure of a goal varies from sport to sport, and one is placed at or near each end of the playing field for each team to defend. Sports which feature goal scoring are also commonly known as invasion games. For many sports, each goal structure usually consists of two vertical posts, called ''goal posts'', supporting a horizontal ''crossbar''. A ''goal line'' marked on the playing surface between the goal posts demarcates the goal area. Thus, the objective is to send the ball or puck between the goal posts, under or over the crossbar (depending on the sport), and across the goal line. Other sports may have other types of structures or areas where the ball or puck must pass through, such as the basketball hoop. In several sports, sending the ball or puck into the opponent's goal structure or area ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cargo Net
A cargo net is a type of net (device), net used for transferring cargo to and from ships. It is usually square or rectangular, but sometimes round, made of thick rope, with cinch ropes extending from the corners, and in some designs, the edges. Uses Cargo transfer In shipping, cargo ''lift'' nets are used to load and unload cargo. The net is spread out by stevedores, who load the goods onto it. They then attach the cinches to a crane hook. Lifting the hook draws the corners of the net around the cargo. This results in a balanced and secure load which can be safely hoisted. Goods are transferred from one place to another in the construction industry using cargo nets. When used to transfer cargo by helicopter, they are referred to as "underslung" cargo nets. Securing loads Cargo nets are used by the military, and in the shipping industry, to secure loads to prevent them from shifting during transport, as well as to deter theft. Obstacle courses As part of obstacle courses, ca ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Stress–strain Curve
In engineering and materials science, a stress–strain curve for a material gives the relationship between stress and strain. It is obtained by gradually applying load to a test coupon and measuring the deformation, from which the stress and strain can be determined (see tensile testing). These curves reveal many of the properties of a material, such as the Young's modulus, the yield strength and the ultimate tensile strength. Definition Generally speaking, curves that represent the relationship between stress and strain in any form of deformation can be regarded as stress–strain curves. The stress and strain can be normal, shear, or a mixture, and can also be uniaxial, biaxial, or multiaxial, and can even change with time. The form of deformation can be compression, stretching, torsion, rotation, and so on. If not mentioned otherwise, stress–strain curve typically refers to the relationship between axial normal stress and axial normal strain of materials measur ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Safety Net
A safety net is a type of net (device), net designed to protect people from injury after falling (accident), falling from heights by limiting the distance they fall, and dissipating the impact energy. The term also refers to devices for arresting falling or flying objects for the safety of people beyond or below the net. Safety nets are used in Construction site safety, construction, building maintenance, entertainment, and other industries. Action of a safety net A safety net gives falling objects much more time to come to rest than hitting the hard ground directly. In physical terms, this means more time for deceleration and kinetic energy transfer, resulting in a softer landing and a much lower risk of damage. The specific type of net to be used depends upon many factors, such as the falling object's speed and mass. To withstand more force, a greater total width of the net is required. The minimum distance between the spot on the net where the object impacted and the n ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Grain (textile)
For woven textiles, grain refers to the orientation of the weft and warp threads. The three named grains are straight grain, cross grain, and the bias grain. In sewing, a pattern piece can be cut from fabric in any orientation, and the chosen grain or orientation will affect the way the fabric hangs and stretches and thus the fit of a garment. Generally speaking a piece is said to be cut on a particular grain when the longest part of the pattern or the main seams of the finished piece are aligned with that grain. Non-woven materials such as felt, interfacing or leather do not have a grain. Straight grain The straight grain is oriented parallel with the warp threads and the selvedge. The straight grain typically has less stretch than the cross grain since the warp threads will be pulled tighter than the weft during weaving. Most garments are cut with the straight grain oriented top to bottom.Howard, Pamela. "For woven fabrics, it's important to go with the grain". Threads (Taunton ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
