why do dutch windmills have holes in the blades

116 [34] Windmills were applied in regions where there was too little water, where rivers freeze in winter and in flat lands where the flow of the river was too slow to provide the required power. Gears inside a windmill would convey power from the rotary motion of the sails to a mechanical device. Wind is a clean source of renewable energy that produces no air or water pollution. 125: De Zwaan Windmill stands 125 feet from the base of the building to the apex of its blades. Why are windmills so important in the Netherlands? The Zaan district has been said to have been the first industrialized region of the world with around 600 operating wind-powered industries by the end of the eighteenth century. The lower half of the smock windmill was made of brick, while the upper half was made of wood, with a sloping tower shape that added structural strength to the design. This cookie is set by GDPR Cookie Consent plugin. Amish garden windmills like the Amish Made Poly Two Tone Dutch Windmill come with 2 inch holes to accommodate the appropriate anchor kit for concrete slab, wood or ground. As the U.S. continues to build up its wind power infrastructure,aclaimis circulating on social media questioning just how green this alternative energy is. The machinery of the traditional Netherlands Windmills usually includes four elementary components: gear, sail, wind shaft, and brake wheel. The Molen de Otter, still in operation in Amsterdam, is also used for drainage. WebA windmill is a machine that harnesses the power of the wind. Some, like this Amish Pressure Treated Dutch Windmill, have a swivel option that allows the head to swivel too. 3: It has called three cities home. Retrieved 2013-08-15. In September, Spanish renewable energy company Siemens Gamesa, also announced the creation of a new,more easily recycled turbine blade. Later mill sails had a lattice framework over which the sailcloth was spread, while in colder climates, the cloth was replaced by wooden slats, which were easier to handle in freezing conditions. The most important probably was pumping water out of the lowlands and back into the rivers beyond the dikes so that the land could be farmed. The modern wind power industry began in 1979 with the serial production of wind turbines by Danish manufacturers Kuriant, Vestas, Nordtank, and Bonus. Netherlands. Simple machine: a basic device that reduces the amount of force required to do work. According to the SDU lecturer's calculations, the waste sector in Denmark will have to receive 46,400 tonnes of fiberglass from wind turbine blades over the next 20-25 years. [7][8] His description of a wind-powered organ is not a practical windmill but was either an early wind-powered toy or a design concept for a wind-powered machine that may or may not have been a working device, as there is ambiguity in the text and issues with the design. Post mills sometimes have a head and/or tail wheel driving the stone nuts directly, instead of the spur gear arrangement. Those who work in the wind turbine energy or when a turbine is shut down have the opportunity to ascend to the top. Windshafts can be wholly made of wood, wood with a cast iron pole end (where the sails are mounted), or entirely of cast iron. In contrast to the post mill, only the cap of the tower mill needs to be turned into the wind, so the main structure can be made much taller, allowing the sails to be made longer, which enables them to provide useful work even in low winds. H.R. The cookie is set by GDPR cookie consent to record the user consent for the cookies in the category "Functional". Enjoy the convenience of an Amish Hardwood Microwave Serving Cart with Butcher Block and Slatted Shelves in your kitchen. Most Dutch windmills can turn the directions of the blades Windmills can be found all across Europe. But, there are quite some differences between European windmills. But the Dutch found a way to make their windmills unique. The weather often changes in the Netherlands, and so does the direction of the wind. This site was built using the UW Theme | Privacy Notice | 2023 Board of Regents of the University of Wisconsin System. Reddit and its partners use cookies and similar technologies to provide you with a better experience. Do Dutch windmills rotate to face the wind? In the fourteenth century, hollow-post mills were used to drive scoop wheels to drain the wetlands. How many blades does a farm windmill have? The Netherlands Windmill Ancient Engineering Technologies That honor goes to Daniel Halladay from Connecticut, who began inventing them in 1854. It does not store any personal data. Copyrights 2003 - 2019 DutchCrafters All rights reserved. State One Example When Resistance Is Desirable. Privacy Policy. For example, a drainage mill uses another set of gear wheels on the bottom end of the upright shaft to drive a scoop wheel or Archimedes screw; but Sawmills use a crankshaft to provide a reciprocating motion to the saws. What do Windmills do? Of the 10,000 windmills in use in the Netherlands around 1850,[40] about 1,000 are still standing. Why do Dutch windmills have holes in the blades? Wind causes its blades to spin, thereby creating kinetic energy. molens. Worldwide, many thousands of wind turbines are now operating, with a total nameplate capacity of 591GW as of 2018.[47]. The technical storage or access is strictly necessary for the legitimate purpose of enabling the use of a specific service explicitly requested by the subscriber or user, or for the sole purpose of carrying out the transmission of a communication over an electronic communications network. Models eventually developed into a multi-blade system thats still used The fairing is composed of two shells (one on the pressure side, and one on the suction side), connected by one or more webs linking the upper and lower shells. 2007. In grist mills, the great spur wheel, lower down the upright shaft, drives one or more stone nuts on the shafts driving each millstone. [2][3] Regarded as an icon of Dutch culture,[4] there are approximately 1,000 windmills in the Netherlands today. Klaus Ferdinand, The Horizontal Windmills of Western Afghanistan, Folk 5, 1963, pp. Visit one of the 1000 mills during National Molendag. The Molen de Otter, still in operation in Amsterdam, is also used for drainage. This makes it possible to drive machinery below or outside the body while still being able to rotate the body into the wind. Kinderdijk is a UNESCO site and a masterpiece of water management in a typical Dutch landscape. Why are their so many windmills in Holland? Also, the machinery might differ when the windmill is used for other applications than milling grain. The windmill is designated a Grade I listed Why do Dutch windmills have holes in the blades? The reason why the windmills in Ireland turn clockwise because the blades are facing in the direction of the wind so that the air is passing onto the blades which pushes the blade around the fulcrum. Remember to measure your space when selecting a decorative Amish windmill for yard or garden to ensure just the right fit. Old windmills or wind turbines that are too small by todays standards are Why was this? The windmills in Holland played a crucial role in the development of our country. [11][12] This design was the panemone, with vertical lightweight wooden sails attached by horizontal struts to a central vertical shaft. Those old blades are on display next to the windmill for the public However, there are multiple contemporary examples of successful wind turbine blade recycling. An original blade from the De Zwaan windmill at Windmill Island Gardens park, when the mill is not working, has long been used to give signals. Turbine blades can last up to 20 years, but many are taken down after just 10 so they can be replaced with bigger and more powerful designs. Inside there is a 260 foot ladder the only way to the top is by climb. WebPOST MILLS. To provide the best experiences, we use technologies like cookies to store and/or access device information. Four good reasons to indulge in cryptocurrency! [57] One of them is the recycling company H.J. https://en.wikipedia.org/wiki/Netherland, Gregory, R. The Industrial Windmill in Britain. This cookie is set by GDPR Cookie Consent plugin. Why Is Viva Magenta Pantones Color of the Year 2023? 10 How many windmills are in the Netherlands? Edgewise bending subjects the leading edge to a tensile load, and the trailing edge to a compressive load. Nevertheless, the wind energy industry is booming. Discover the numerous functions of various windmills. The mill, completed in 1718, became known as the Oude Molen and was located between Pinelands Station and the Black River. See also how is energy transferred and conserved. The cookie is set by the GDPR Cookie Consent plugin and is used to store whether or not user has consented to the use of cookies. WebHeckington Windmill is the only eight-sailed tower windmill still standing in the United Kingdom with its sails intact.. Heckington is located between Sleaford and Boston in Lincolnshire, England.The mill stands very close to Heckington railway station, hence its name of the Station Mill in the 19th century. [29], The evidence at present is that the earliest type of European windmill was the post mill, so named because of the large upright post on which the mill's main structure (the "body" or "buck") is balanced. [citation needed] Molens, De Nieuwe Stockhuyzen. As the shaft rotates the sack rope winds around the shaft and lifts the sack. A solar-powered pump system will cost about $7 000 (not including piping storage tank wiring well etc.) Resources, Conservation, and Recycling, Feb. 1. They can complete an outdoor scene and can also be used to cover areas youd like to conceal. [25][26], The earliest certain reference to a windmill in Northern Europe (assumed to have been of the vertical type) dates from 1185, in the former village of Weedley in Yorkshire which was located at the southern tip of the Wold overlooking the Humber Estuary. A typical windmill with 8 diameter wheel can lift water 185 feet and pump about 150 gallons an hour in 15 to 20 mph winds when using a 1 pump cylinder. use a crankshaft to provide a reciprocating motion to the saws. [6] Hero of Alexandria (Heron) in first-century Roman Egypt described what appears to be a wind-driven wheel to power a machine. Windpumps were used to pump water since at least the 9th century in what is now Afghanistan, Iran and Pakistan. Wind turbines have three platforms along the ascent to view other climbers or to take a rest during. Post mills sometimes have a head and/or tail wheel driving the stone nuts directly, instead of the spur gear arrangement. It is characterized by its singular upper body section which housed the functioning mechanisms that attached to a singular post. There are more than 1.000 windmills in the Netherlands. [24] By rejecting non-essential cookies, Reddit may still use certain cookies to ensure the proper functionality of our platform. Exploring windmills in Holland is an exciting thing to do. Most have a gearbox which turns the slow rotation of the blades into a quicker rotation that is more suitable to drive an electrical generator. The Molen de Valk in Leiden has been restored and now grinds grain once again. These early modern examples seem not to have been directly influenced by the vertical-axle windmills of the medieval period, but to have been independent inventions by 18th-century engineers. The cooling process is called "Film Cooling", where cool air is bled This was necessary because the Netherlands is 26% below sea level. subscribe to our print edition, ad-free app or electronic newspaper replica here. You also have the option to opt-out of these cookies. https://kids.nationalgeographic.com/explore/countries/netherlands/, Netherlands. Be sure to measure the area and check the windmill dimensions for the right fit. Some are still being used for drainage, such as one or two of the nineteen in Kinderdijk. The grain or corn is fed between the stones and ground into flour. The brake wheel is fitted onto the windshaft between the front and rear bearings. It was first built to pump water, and subsequently modified to grind grain as well. "Some companies say they are recycling blades, but the amount they recycle is minimal,"the user told USA TODAY in a direct message. Such mills pumped water and powered feed mills, sawmills, and agricultural machinery. Technical drawing of a 1793 Dutch smock mill for land drainage, Lingkun Chen, Undergraduate Student WebWell, if you are someone who loves building things, you can build one for your own yard. The smock windmill design included a small turbine in the back that helped the main mill to face the direction of the wind. At the same time the lower valve opens to allow water to enter the pump and fill the vacuum created by the upward motion of the piston. The cookie is used to store the user consent for the cookies in the category "Performance". A center axle is then connected to the rim and attached with small steel spokes. Why were windmill blades made with so much open space (almost like they were lattice)? What does a wind turbine look like inside? mills, and to process oil seeds, wool, paints, and stone products. These early turbines were small by today's standards, with capacities of 2030kW each. We use cookies on our website to give you the most relevant experience by remembering your preferences and repeat visits. The brake wheels are fitted onto the winding shaft between the front and rear bearing. The sails or blades accumulate the wind that flows over it, and use the lift to turn the blades. Windmills have their blades angled in such a way as to catch moving air or wind. The cookies is used to store the user consent for the cookies in the category "Necessary". 6014 , CY. The top part of each turbine (called the nacelle) rotates on the tower beneath so the spinning blades are always facing directly into the wind. Kinderdijk is not so far from Rotterdam. Most of these are being run by volunteers, though some grist mills are still operating commercially. The sack hoist is a simple horizontal shaft and a rope that is tied to a grain sack. Flapwise loading, one of the two different types of loading that blades are subject to, is caused by the wind pressure, and edgewise loading (the second type of loading), is caused by the gravitational force and torque load. Windmills were initially used for milling, hence mills. [31] [62] In early California and some other states, the windmill was part of a self-contained domestic water system which included a hand-dug well and a wooden water tower supporting a redwood tank enclosed by wooden siding known as a tankhouse. Can a windmill power a train for 120 miles? [33], Common sails consist of a lattice framework on which the sailcloth is spread. By the 1930s, windmills were widely used to generate electricity on farms in the United States where distribution systems had not yet been installed, built by companies such as Jacobs Wind, Wincharger, Miller Airlite, Universal Aeroelectric, Paris-Dunn, Airline, and Winpower. Additional gear wheels drive a sack hoist or other machinery. Why do windmills in Ireland turn clockwise? Choose your finish, varnish, and fabric to enjoy fine dining for years to come! Most modern windmills appears to rotate clockwise. [64] Another well-known maker was Metters Ltd. of Adelaide, Perth and Sydney. Ashby,"Elastic Structures in Design", Reference Module in Materials Science and Materials Engineering,Elsevier,2016. It is true that decommissioned wind turbine blades are often thrown away in landfills. What Does The Nucleus Of One Atom Want To Do To The Electrons Of A Nearby Atom, What Animals Today Are Related To Dinosaurs. The wind speed has to be higher before The windmills today There are over 1000 windmills in Holland. [20] Click here to sign up for our fact-check text chat. The first post mills were of the sunken type, where the post was buried in an earth mound to support it. Routledge, 2014, 519. Theres energy locked in wind and their giant rotors can capture some of it and turn it instantly into electricity. No. The webs connect to the spar laminates, which are enclosed within the skins (surfacing) of the blade, and together, the system of the webs and spars resist the flapwise loading. Those who would like to see the inside of a mill can find several with museums and restaurants located inside. Yes. Other uncategorized cookies are those that are being analyzed and have not been classified into a category as yet. [36] A mill with an even number of sails has the advantage of being able to run with a damaged sail by removing both the damaged sail and the one opposite, which does not unbalance the mill. Amish made windmills are built to last and will brighten your outdoor scene for many years. [48][49] While such changes increase their power output, they subject the components of the windmills to stronger forces and consequently put them at a greater risk of failure. The blades are mounted on a tall tower or building. The blade of a wind turbine consists of 4 main elements: the root, spar, aerodynamic fairing, and surfacing. [22], Vertical-axle windmills were built, in small numbers, in Europe during the 18th and nineteenth centuries,[15] for example Fowler's Mill at Battersea in London, and Hooper's Mill at Margate in Kent. It could be just slightly windy it only takes a slight breeze of to turn a turbine. The blades that came over have since been removed because they have bullet holes in them." Some Amish windmill models are hollow and can be used as covers for an unsightly area or fixture. Poly windmills are made from recycled plastic and come in a wide variety of colors from neutrals to brights. Once a year Holland holds "National Mill Day." WebHistorically, windmills in Holland served many purposes. The NetherlandsThe Netherlands is known for windmills but it produces very little wind power Quartz. Thats how green energy works!. Routledge, 2014, 519. . According to a joint NS and Eneco website around 600 000 passengers every day are now travelling thanks to wind energy. 25, 20 Dec, p. 54], Ng C., Ran L. "Offshore Wind Farms: Technologies, Design and Operation" Woodhead Publishing (2016). USA TODAY reached out to the social media users who shared the claim. Anchors are not included, but can be purchased at your local hardware store. You will just need to have excellent dutch windmill plans to be able to accomplish this. Theblogy.com [23], The horizontal-axis or vertical windmill (so called due to the plane of the movement of its sails) is a development of the 12th century, first used in northwestern Europe, in the triangle of northern France, eastern England and Flanders. However, due to the special geographical features of the Netherland, Dutch people built windmills to pump water out of the lowlands and back into the rivers beyond the dikes to deal with flooding issues. If the blades are stopped in a "+" sign (3-6-9-12 o'clock), the windmill is open for business. Heres some helpful info on what to expect with a decorative garden windmill. Large wind turbines require a large amount of energy to operate. An individual wind turbine has a relatively small physical footprint. The holes generate turbulence, which acts as a brake (and also reduces lift). Whether youre living in a rural area and dont have access to an electric grid or are living in a suburb and looking to reduce your utility bill home wind turbines are a great solution. Horizontal-Axis Turbines Most commonly they have three blades and operate upwind with the turbine pivoting at the top of the tower so the blades face into the wind. [16] The authenticity of part of the anecdote involving the caliph Umar is questioned because it was recorded only in the 10th century. "Optimized Carbon Fiber Composites in Wind Turbine Blade Design" US Department of Energy (2019), "The Dutch windmill making artisanal bread", Annual Review of Energy and the Environment, "History Of Windmills: Part 2 - Windmills Tech", "Wind powered factories: history (and future) of industrial windmills", "Windmill Sail - Different Types of Windmill Sails", "In somber ceremony, Dutch receive the first remains of MH17 victims", "World First for Scotland Gives Engineering Student a History Lesson", The Return of Windpower to Grandpa's Knob and Rutland County, https://doi.org/10.1016B978-0-08-098330-1.00011-9, https://doi.org/10.1016/B978-0-12-803581-8.02944-1, https://www.energy.gov/eere/wind/downloads/optimized-carbon-fiber-composites-wind-turbine-blade-design, "Verdens frste havmllepark er deponeret p en losseplads i Aalborg", "Arbejdspladser og eksport | Wind Denmark", "Glasfiber fra Vindeby Havmllepark endte p losseplads i Aalborg", "Politikere krver handling: Rester fra vindmller dumpes i jorden", "Bagsiden af den grnne strm - vindmllerester graves ned i jorden", "Wind Turbine Blades Can't Be Recycled, So They're Piling Up in Landfills", Earth Science Australia, Wind Power and Windmills, A Geograph article and photo-record of Windmills in Great Britain, https://en.wikipedia.org/w/index.php?title=Windmill&oldid=1149648995, Articles with dead external links from April 2023, Articles with permanently dead external links, Short description is different from Wikidata, Wikipedia indefinitely move-protected pages, Articles with failed verification from March 2023, Articles with unsourced statements from February 2016, Articles with unsourced statements from March 2023, Articles with unsourced statements from January 2023, Creative Commons Attribution-ShareAlike License 3.0, R. Gregory, The Industrial Windmill in Britain. The early tower mills did not survive the gales of the Cape Peninsula, so in 1717 the Heeren XVII sent carpenters, masons, and materials to construct a durable mill. Wind is a renewable energy source. The use of windmills in The Netherlands started in the 12th century AD. Does the Netherlands have wind turbines? This cookie is set by GDPR Cookie Consent plugin. From steam to electricity and diesel and currently by a computer-operated system of pumping stations the Kinderdijk mills got help from ever-better pumps to keep draining the rising water from the polder. Historically, windmills in Holland served many purposes. [21] A similar type of horizontal windmill with rectangular blades, used for irrigation, can also be found in thirteenth-century China (during the Jurchen Jin dynasty in the north), introduced by the travels of Yel Chucai to Turkestan in 1219. The term wind engine is also sometimes used to describe such devices. [52], When the Vindeby Offshore Wind Farm was taken down in Denmark in 2017, 99% of the not-degradable fiberglass from 33 wind turbine blades ended as cut up at the Rrup Controlled Landfill near Aalborg, and in 2020 with considerably larger fiberglass quantities, even though it is the least environmentally friendly way of handling waste. Creating an eco-friendly outdoor dining space where Read more, The outdoor fire pit is a great place to relax, gather and socialize, and to enjoy the views of your Read more, Staying indoors during the pandemic prompted many of us to create additional comfort within the home, along with new work Read more, Office: 941-867-2233 | Email:questions@dutchcrafters.com | 3709 N. Lockwood Ridge Road, Sarasota, Florida 34234, *Promotion pricing and discounts must be used at time of purchase | Promotion pricing valid only for duration of promotion | Promotion pricing and discounts not valid on Berlin Gardens, LuxCraft, or Barkman Furniture Collection items | Promotions, discounts, sales or coupons cannot be combined. Old windmills seem to have used blades like this one: https://i.imgur.com/WeU6A15_d.jpg?maxwidth=640&shape=thumb&fidelity=high. During the late 19th century, steel blades and steel towers replaced wooden construction. A method of keeping the cap and sails into the wind automatically is by using a fantail, a small windmill mounted at right angles to the sails, at the rear of the windmill. (2020, November 21). These cookies help provide information on metrics the number of visitors, bounce rate, traffic source, etc. Do people live in windmills in the Netherlands? Most turbines spin in a clockwise direction for reasons pertaining to convenience and a single global standard. Recycling and waste problems with polymers blades. When it comes to beauty, the 19 polder draining windmills of the Kinderdijk win first prize. Necessary cookies are absolutely essential for the website to function properly. Dutch started building windmills as early as 1,200 AD. The large number of windmills in Holland or the Netherlands, is due to the fact that they were needed to pump water into the canals off the rich, low-lying land reclaimed from the sea. A large round heavy stone is turned by the wind powered wings and grinds against another stationary stone beneath it. But two-bladed turbines will wobble when they turn to face the wind. How do I choose between my boyfriend and my best friend? A windmill is a structure used to harness the power of the wind for purposes like grinding grain, pumping water, and generating electricity. Wind and water powered mills were in essence the first real factories in human history. A brief history of windmills a.k.a. Website feedback, questions or accessibility issues: jkpark@wisc.edu. The Netherland, informally Holland, is a country primarily located in Western Europe and partly in the Caribbean. [5], Wind-powered machines may have been known earlier, but there is no clear evidence of windmills before the 9th century. Located in the province of South Holland, Kinderdijk is home to the countrys most recognizable windmills. With three blades the angular momentum stays constant because when one blade is up the other two are pointing at an angle. Windmill House is a charming country house set in two acres of attractive gardens. Kinderdijk is the most famous group of polder mills and is World Heritage listed. 2012-08-31. Chest of Drawers: Whats the Difference. For more information, please see our In Amsterdam, you can see the Molen de Otter, the only wind-powered sawmill left in operation. Wind turbine rotor blades can be engineered to spin both ways to produce electricity clockwise or counterclockwise. Shercliff, M.F. Turbine: a machine that uses rotating blades to generate energy. WebTherefore, in order to make a model windmill operate like the true Dutch windmill, when the wind is blowing predominantly onto the front face of the windmill, the twist of the ends of the Sail Attachment Bars needs to be in the opposite direction. Composites Part B: Engineering, July 9, 2019. Dietrich Lohrmann, "Von der stlichen zur westlichen Windmhle", Wailes, R. Horizontal Windmills. Vestas unveils blade recycling technology, Recycled Glass Fiber Composites from Wind Turbine Waste for 3D Printing Feedstock: Effects of Fiber Content and Interface on Mechanical Performance, GE Renewable Energy announces onshore wind turbine decommissioning and recycling agreement with neowa, Wind Turbine Blades Cant Be Recycled, So Theyre Piling Up in Landfills, Recycled wind turbine blades as a feedstock for second generation composites, Extruded Fiber-Reinforced Composites Manufactured from Recycled Wind Turbine Blade Material, Wind industry calls for Europe-wide ban on landfilling turbine blades, NREL Explores Innovative Manufacturing Approach for Next-Generation Wind Turbine Blades, National Overview: Facts and Figures on Materials, Wastes and Recycling, Wind energy had a 'banner year' in 2020. Whether you use them for yard, garden, or landmark, some questions may arise. Many of the drainage mills have been appointed as a backup to the modern pumping stations. Later, a wooden support was developed called the trestle. The most important probably was pumping water out of the lowlands and back into the rivers beyond the dikes so that the land could be farmed. In the late 1800s a basic mill could cost as little as $1.50 to build. The holes generate turbulence, which acts as a brake (and also reduces lift). What To Do 1. and a windmill will cost about $10 000 (windmill stand motor and not much more). He says they have alsostarted a company,Fibrecycle Materials Corp., to commercialize this process. See also why do coyotes howl at the moon. This medium sized Amish Two Tone Poly Windmill weighs approximately 32 lbs and requires minor assembly. Halladays mill design used wooden vanes rather than sails and the vanes were set on simple towers above water wells. It is also a museum, a witness to the history of windmills in the area. WebThe design of this delightful wooden windmill is based on classic dutch windmills that you read about as a child. Theres energy locked in wind and their giant rotors can capture some of it and turn it instantly into electricity. Windmills transfer wind energy to rotation energy by catching the movement through wings that are sent spinning. 2023 USA TODAY, a division of Gannett Satellite Information Network, LLC. And then there is: Zaanse Schans, where you can find 15 windmills, and quite some well preserved typical Dutch historic houses. The spread of tower mills came with a growing economy that called for larger and more stable sources of power, though they were more expensive to build. These cookies will be stored in your browser only with your consent. to use them grinding grains. Hansen, where the product manager informed, that they have transported approximately half of the wings they have received since 2012 to Reno Nord's landfill in Aalborg. Its blades and body have been finished in brown and hand-burnished to give it a weathered, rustic look. Wouldn't they have been more efficient as a solid blade? A windmill is a structure that converts wind power into rotational energy using vanes called sails or blades, by tradition specifically to mill grain (gristmills), but in some parts of the English-speaking world the term has also been extended to encompass windpumps, wind turbines, and other applications.

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