Q: I need a detailed explanation about how something in sports equipment is made using science. For example trainers. There may be studs. Scientists must have thought of using studs so that people who play football on pitches have better grip. So I need
A: One invention was the clap skate. This skate was designed to have a semi-separate boot and blade, so that the blade makes contact with the ice for longer, and provides a better performance.
Other examples are the tight suits worn by swimmers
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It’s easy to take some things for granted until they’re suddenly gone. Have you ever thought about how it would feel if you lost one or two of your front teeth? You’d probably avoid smiling. It would be uncomfortable talking with someone face-to-face. It wouldn’t be easy pronouncing certain words. And how about eating an apple? Until your teeth are gone, you might not miss them. Each year, thousands of teens get hurt on the playing field, the basketball court, or while skateboarding, biking or during other activities. Blows to the face in nearly every sport can injure your teeth, lips, cheeks and tongue.
A properly fitted mouth guard, or mouth protector, is an important piece of athletic gear that can protect your teeth and smile. You may have seen them used in contact sports, such as football, boxing, and ice hockey.
However, you don’t have to be on the football field to benefit from a mouth guard. New findings in sports dentistry show that even in non-contact sports such as gymnastics, rollerblading, and field hockey, mouth guards help protect teeth. Many experts recommend that a mouth guard be worn for any recreational activity that poses a risk of injury to the mouth.
There are three types of mouth guards: The ready-made, or stock, mouth guard; the mouth-formed “boil and bite” mouth guard; and the custom-made mouth guard made by your dentist. All three mouth guards provide protection but vary in comfort and cost.
The most effective mouth guard should have several features: It should be resilient, tear-resistant and comfortable. It should fit properly, be durable and easy to clean, and not restrict your speech or breathing.
Generally, a mouth guard covers only the upper teeth, but in some cases the dentist will instead make a mouth guard for the lower teeth. Your dentist can suggest the right mouth guard for you.
Here are some suggestions for taking good care of your mouth guard:
Before and after each use, rinse it with cold water or with an antiseptic mouth rinse. You can clean it with toothpaste and a toothbrush, too.
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PETZL full adjustable headlamp. Has 3 LED's. Used only a few times. Everything Works.
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Jansport hydro-pack. Used about 20-30 times. Holds 2 liters of water, gatorade, or whatever. No tears, leaks, stains, etc...
**$20**
Jansport hydro-pack. Used about 20-30 times. Holds 2 liters of water, gatorade, or whatever. No tears, leaks, stains, etc...
