1 July 2013
Carotid & Vertebral Artery Dissection
Carotid & Vertebral artery dissection are two brainrelated injuries that are caused alot by Roller Coasters, these types of injuries are caused by the sudden stops of Roller Coasters , but where did these Roller Coasters come from? The history of Roller Coasters date all the way back to the 16th century. Although, Roller Coasters are a very popular and amusing attractions in America today, it wasn't originated here. The very first, primitive ideas of Roller Coasters were created in Russia in the 1400s and 1500s. In the winter, seventyfoot hills were built of wood and packed with snow. Water was sprayed on the snow in order to freeze, so it would make a slicker track. Guides would take riders down the track on a sled by holding the rider in their lap. During the 1700s, outside of Saint Petersburg, Russia, colorful lanterns were hung along the track to allow people to go sledding at night.
Between 1817 and 1826, the French government let people build roller coasters. One coaster design included motors on each coaster car, which was powered by a windmilllike machine. Another design handrails on each side of the track so the passengers could pull themselves up the hill. Another inventor incorporated a gamelike theme for his coaster, where riders would use spears to catch rings as the cars traveled along the track. However, French people eventually got tired of roller coasters after the
19th century. The development of these rides migrated to the United States of America. Physics must be used by architects to calculate the amount of Kinetic Energy at different points on the track to make sure the car will have enough Kinetic Energy to make it up various hills. Basically, as soon as the car goes down the first big hill, the amount of Greatest Potential Energy and Kinetic Energy change and interchange with each other depending on the location of the car, since the TE = KE + GPE. If it is not moving at the top of the big hill, then all of the energy is GPE since the velocity is zero in the KE equation. The value of GPE at the top of the biggest hill will also tell you the total amount of energy the car has to offer, since Total Energy = GPE + KE and KE is zero, so GPE = Total Energy. Which is a very important formula to use to make the roller coaster move and accelerate.
Also, physics also comes in to the roller coaster world as friction. Basically friction is the slowing force of two surfaces rubbing in contact with one another. Although some people see friction as something that is almost in the way, it is extremely important, especially when a roller coaster is turning. If there is not enough friction directed toward the center of the turn, then the roller coaster will fly off the track. This is why the job of an rollercoaster architect is so important because it can potentially put anyone's life in danger and that is the most important reason why, you must make precise and good measurements. Architects must also take into hand the health of other, i mean that is why they are hired for. They use different equations in their work in order to have a great and effective rollercoaster. To name a few there is there the equation to find velocity ,one to find force, and one to find mass . These are equations
needed in order for these roller coasters to be built, if not there would be a whole lot more deaths and amusement parks and roller coaster architects would lose millions and millions of dollars.
We all know the basic designs and overall look of roller coasters. Big wooden or steel structures with coaster cars that has big drops and thrills. I have researched the different types of roller coasters and discovered that there were 8 different structures. ...
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