| Facts about helmet | | Facts about Helmet:
It should not obstruct vision.
It should not impair with hearing.
It should be light weight.
It should not cause fatigue which causes crashes.
It should not cause skin diseases.
It should not increase the probability of neck injuries.
Kinds of helmets to be used:
It should have a thick padding of thermocole- at least 20 mm- which must extend to the sides of the head. A full face helmet is safer by all means.
Components of the helmet and their roles:
The Shell: The shell of a helmet is an injection molded thermoplastic or a pressure molded thermoset that is reinforced with glass fibers or made of fiber glass.
It absorbs energy in an impact:- The shell bends when the helmet is impacted and the underlying foam deforms. At moderate speeds the shell can take one-third of the impact energy.
It distributes local forces from an impact:- Rigid objects like stone or a projecting beam can cause a skull fracture at low forces, the shell acts to distribute the force of such impact eliminating the risk of penetration.
It allows sliding on road surfaces:- The shell being rigid and having a convex shape allows the helmet to slide along a road surface... | |
| | what is the Fastest Swimming Bird? | | The fastest swimming bird is Gentoo Penguin found on the Antarctic Islands can swim 40 km per hour. Large populations are found at South Georgia, Falkland Islands, and Iles Kerguelen although their breeding distribution is circumpolar. An orange bill and a white stroke behind its eye distinguish the black and white gentoos from the smaller adelie and chinstrap species. Long stiff tail feathers stick out behind as they walk, often cocked up in the water, no other penguin has such a prominent tail. They breed in winter at the more northerly sub-Antarctic islands, laying two eggs as early as July. Can dive over 300' though most prey dives are shallower. Most dives last only half a minute. | |
| | Is the NFL too harsh? | | Chad Ochocinco was fined 30,000 dollars for wearing a sombrero on the sideline, he was fined another 5,000 dollars for wearing an orange chinstrap instead of a white one. Before he changed his last name to Ochocinco he was fined 5,000 dollars for wearing a Jersey that said Ochocinco on the back. Clinton Portis was fined 20,000 dollars for wearing striped socks and black cleats during a game. Chris Johnson was fined 10,000 dollars for playing bongo drums on the sideline. Ryan Clark was fined 5,000 dollars for wearing eye black with the number 21 to honor his teammate who was murdered. Sheldon Brown was fined 10,000 dollars for wearing a Jason mask while the announcer was introducing the players before the game even started. does the NFL truly the No-Fun-League most people make it out to be, or are they just trying to make a point that they have a zero tolerance on athletes in their organization that break their rules? | |
|
