Belt is a garment shaped flexible band made of leather or other durable material that is placed around the waist or hip. A catapult is a military instrument used in ancient times to the launch distance of large objects like a projectile. Sleep is a natural resting state on a variety of mammals, birds, fish, animals and invertebrates. Who will win?
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| Belt |
At one end of the belt is generally metal buckle through which the other end of the strap is inserted. The belt has a series of equally spaced holes, in which the prong of the buckle is inserted in order to secure it. The disparity of holes allow a belt serve for people of different sizes and, if not find the right hole, you can go to a leather goods perform as a hole.
Other times, there is a closure clamp system so that the holes are not required for attachment. Sometimes, especially for women, the buckle is designed in the form of elaborate decorative brooch fashion firms looking to differentiate and strengthen their brand image. Since the belts must be securely fastened around the waist to hold the pants, they may be less comfortable than the straps, that allow pants hang freely on the body.
The use of seat is documented for male and female clothing since the Bronze Age. Since then, both sexes have put or removed, depending on the current fashion, but it has been a rarity in women's fashion except for the early Middle Ages, late seventeenth century Mantua and combinations skirt and blouse from 1900 and 1910. the belt buckles of Art Nouveau are today collector's items.
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| Catapult |
The catapult was created primarily for shooting down enemy walls and take by assault the castles. It is said that the first to use it for this purpose were the Greeks. Catapults are siege weapons that were used in wars and conflicts of the Middle Ages. The first catapults were used at very large distances, making it very difficult to build and use. This forced the designers and engineers to work on their shape, weight, size, design and mobility, as were weapons needed in the great battles. In this way it was possible to get an easier to handle and move, which could participate in the battles catapult.
It is also known to these devices with the velopoietica Latin name. Larger models were mounted on strong wooden pallets; the trigger or drive this type of crossbow tightened by ropes to be attached with a hook. Another type of catapult torque applied the principle to throw stones or heavy objects on walls and moats: coiled ropes with winches to take back the drive. smaller catapults, which were portable were also used. See Fortifications.
The most primitive catapults possessed an arm-shaped spoon at the end to locate and launch the missile, but the latest versions before the advent of gunpowder used a slingshot to launch the projectile.
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| Sleep |
Signs of life as consciousness, puls, respiratory rate changes. In normal sleep usually motor nerve function of the sensory nerves also for activities that require coordination with the central nervous system will be blocked, so that during sleep tend to not move and responsiveness was reduced
Phase transition from conscious to sleep referred to as pradormitium and intermediate phases of sleep back into conscious referred to as postdormitium. In medical science the study of sleep disorders called somnologie.
In the animal world is a common sleep though so this is not universal. Eg land animals to sleep with eyes closed, while marine animals can not be 100 percent proven, although many assume that they also slept. Dolphins or whales even snore. Dolphins eg sleeping with one part of the brain alone or hemisphare, this is due to the adjustment of a dolphin needs to breathe underwater. Therefore dolphins not through REM sleep. Other examples such as sea lions and seals; they can sleep on land and at sea. if on land they experienced phase of sleep just like humans, if at sea experienced a phase of sleep just like dolphins.
Humans spend a third of his time in bed. Sleep not only because of fatigue but also because habits and lifestyle. The safety factor should be built to cope with the possibility of a crime when we're sleeping. Therefore, always check the security of the house before bed.