Armour
Armour (or armor U.S.) is a protective covering or clothing to prevent injury from attack. Armour can be worn by a person, or it can be used to protect machines, animals, even buildings. Armour has always been made from the strongest materials available at the time, but weight has always been a problem. Early body armour was made from leather. Later, metals were used (e.g. mail or plate armour). Some modern armour, like bullet-proof vests, are made from plastics that do not stretch or break, such as Kevlar. These plastics may be woven into a cloth and used in layers, which makes them even stronger.
Plastic lamination (layers) is often used to protect windows against bullets. Many jewellery stores, embassies, and vehicles have bullet-proof glass with this feature.
For vehicles
Armour put on vehicles is usually made of metal and can include one layer over another with open spaces in between (spaced armour) or multiple layers of metal; ceramics (baked clay), and other materials. Another type of armour uses blocks of explosive that explode when another explosion goes off near it. This explosive armour protects by pushing against the other explosion. Vehicle armor is often angled to increase the amount of armour that must be shot through to get inside and to make the shot bounce off rather than piercing the armour.
Tanks have the heaviest armour of all land vehicles. Other military vehicles have armour, but not as much as a tank.
Sometimes armour is put in non-military vehicles, such as limousines used by leaders of a country or by anyone who thinks they might be attacked such as film stars or leaders of major companies.
For animals
In the past, armour has also been used in wars to protect animals such as dogs, elephants, and horses. Today, police dogs and horses sometimes wear woven plastic bullet-proof vests.
For sports
Many sports involve violent physical contact and may be highly dangerous if the players are unprotected. Such sports include ice hockey, American football and kendo. Sports armour is usually made from hard plastic.
ArmourFor Vehicles Media
Western Xia mail armour
Portrait of a Gentleman in Armour with Two Pages by Paris Bordone
The Dendra panoply, Mycenaean Greek armour, c. 1400 BC
Wooden statue of Guan Yu in mountain pattern armour, 16th c. Ming dynasty
Child armour of Sigismund II Augustus, which was commissioned by Emperor Ferdinand I for his daughter Elizabeth of Austria's marriage to Sigismund II Augustus
Elements of a Light-Cavalry Armor, c. 1510
HMS Warrior during her third commission between 1867 and 1871
An armoured train from 1915
The US Military's M1 Abrams MBT uses composite, reactive, and cage armour
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