Example from the Hansard archive. Contains Parliamentary information licensed under the Open Parliament Licence v3. These examples are from the Cambridge English Corpus and from sources on the web. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors. But the plain fact is that since our pound has been the sick man on the roller coaster of other world currencies.
His use of such phrases surprised me, because we have been on a roller coaster. The last year has been something of a roller coaster. We seem to have had a roller coaster of interest.
The boom-bust roller coaster has once again been let loose and the events of the s Roller Coaster those of earlier decades look like repeating themselves. Before we knew it, we were all on a roller coaster but, ironically, their own industries were damaged even more than ours.
In essence, we are on a roller coaster. The recent reverberations from the roller coaster ride of the stock markets in the region is a small but timely reminder. Since then, as we know, the euro's exchange rate has followed a roller coaster course. That is the roller coaster approach to public expenditure. It looks like a roller coaster. We are on some kind of roller coasterin that no matter what we try to do, it seems to get more expensive by the year.
Nevertheless, the business community—the lifeblood of our economy—has been beset by a roller coaster ride of interest rates, Roller Coaster has been deeply damaging over the past 20 years. See all examples of roller coaster. Translations of roller coaster in Chinese Traditional.
Need a translator? Translator tool. Amusement park accidents Fair Traveling carnival World's fair. Amusement parks Amusement park rankings Roller coaster rankings Closed rides and attractions Defunct amusement parks Water parks. Amusement rides Tourist attractions World's fairs. Categories : Roller coasters Amusement rides lists Lists of buildings and structures.
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Download as PDF Printable version. Wikimedia Commons. Six Flags Great Adventure. Superman: Escape from Krypton [note 1]. Six Flags Magic Mountain. Morgan Manufacturing. Rocky Mountain Construction. El Toro. Six Flags Great America. Colossos - Kampf der Giganten. Great Coasters International. American Eagle. Sensors detect when a train passes so that the system's computer is aware of which blocks are occupied. If a train attempts to enter an occupied block, the stopping mechanisms in all blocks are engaged.
Another key to safety is the programmable logic controller PLCan integral component of a roller coaster's computer system. Multiple PLCs work together to detect faults associated with operation and automate decisions to engage various elements e. Periodic maintenance and visual inspection by ride engineers are also important to verify that structures and materials are within expected wear tolerances and functioning correctly. Effective operating procedures further enhance safety as well.
Roller coaster design is another important aspect that requires a working knowledge of basic physics to enhance ride comfort and avoid harmful strain to the rider. Ride designers must carefully analyze the movement a ride subjects its Roller Coaster to, ensuring its within a reasonable tolerance.
The human body needs sufficient time to react to sudden changes in force in order to control muscle tension and avoid harmful consequences such as whiplash. For negative g-force, or the feeling of weightlessness, the target is 1. Lateral acceleration is also typically kept under 2Gs using various techniques including the banking of curves. Roller coasters are statistically very safe when compared to other activities, but despite all the safety measures in place, accidents still occur.
Consumer Product Safety Commission estimates that park guests required hospitalization in and that fatalities related to amusement rides average two per year. According to a study commissioned by Six Flags, million people visited amusement parks in The study concluded that Roller Coaster visitor has a one-inmillion chance of being fatally injured, which is less likely than being injured in a golf cart or folding lawn chair.
Controversy about safety has increased over the years as roller coasters become more extreme. There have been suggestions that these may be subjecting passengers to translational and rotational accelerations capable of causing brain injury. Ina report from the Brain Injury Association of America concluded, "There is evidence that roller coaster rides pose a health risk to some people some of the time. Equally evident is that the overwhelming majority of riders will suffer no ill effects.
Roller coasters are divided into two main categories: steel roller coasters and wooden roller coasters. Steel coasters have tubular steel tracks, and compared to wooden coasters, they are typically known for offering a smoother ride and their ability to turn riders upside-down.
Wooden coasters have flat steel tracks, and are typically renowned for producing "air time" through the use of negative G-forces when reaching the crest of some hill elements. Newer types of track, such as I-Box and Topper introduced by Rocky Mountain Constructionimprove the ride experience on wooden coasters, lower maintenance costs, and add the ability to invert riders. Modern roller coasters are constantly evolving to provide a variety of different experiences.
More focus is being placed on the position of riders in relation to the overall experience. Traditionally, riders sit facing forward, but newer variations such as stand-up and flying models position the rider in different ways to change the experiences. A flying model, for example, is a suspended roller coaster where the riders lie facing forward and down with their chests and feet strapped in.
Other ways of enhancing the experience involve removing the floor beneath passengers riding above the track, as featured in floorless roller coasters. Also new track elements — usually types of inversions — are often introduced to provide entirely new experiences. Several height classifications have been used by parks and manufacturers in marketing their roller coasters, as well as enthusiasts within the industry.
One classification, the kiddie coaster, is a roller coaster specifically designed for younger riders. Following World War II, parks began pushing for more of them to be built in contrast to the height and age restrictions of standard designs at the time. Companies like Philadelphia Toboggan Company PTC developed scaled-down versions of their larger models to accommodate the demand. These typically featured lift hills smaller than 25 feet 7. Moonsault Scramblewhich debuted at Fuji-Q Highland inwas the first to break this barrier, though the term hypercoaster was first coined by Cedar Point and Arrow Dynamics with the opening of Magnum XL in Top Thrill Dragster at Cedar Point was the first strata coaster ever built.
Son of Beast in Kings Island was the only wooden coaster to have a vertical loop. The loop was removed inand the ride was closed from until its demolition in It was relocated from San Antonio's Playland Park in Oblivion at Alton Towers in Staffordshire, England.
Griffon splashing down into a pool at Busch Gardens Williamsburg. Great Bear is the first steel inverted coaster in Pennsylvania, located at Hersheypark.
Black Mamba at PhantasialandGermany. Thunderbolt at Kennywood outside of Pittsburgh, Pennsylvania was built in Kingda Ka is the world's tallest roller coaster and is the second strata coaster in the world after Top Thrill Dragster. Hyperion at Energylandia in ZatorPoland. From Wikipedia, the free encyclopedia. For other uses, see Roller coaster disambiguation. Ride developed for amusement parks. Main article: History of the roller coaster. See also: Side friction roller coaster.
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