Title: Paint Content: thumb|right|225px|Dried green paint :For the computer software named Paint, see Microsoft Paint Paint is the general term for liquid that is used to add colour to the surface of an object by covering it with a pigmented (coloured) coating. As a verb, painting means "applying paint" (putting paint onto something). Someone who paints is called a painter. Paint is made from a coloured pigment which is usually a powder. The powder is made from different chemicals.Bently J. & Turner G.P.A. 1997. Introduction to paint chemistry and principles of paint technology. Unk. Some of the pigments come straight from natural things like clay. The pigment must be made wet by mixing it with something that will make it stick onto the surface and not come off easily. The wet stuff is called the "medium" or "vehicle". Water-based paints are mixed with water. Other paints are mixed with oils or chemicals of different sorts. Most painters buy paint that is already mixed. House-painters use paint already mixed in large cans. Artists buy paint in tubes. Some artists buy dry pigment and mix it for themselves. The paint is usually put onto the surface with a paint brush. Paint brushes are used by painters of all sorts. House painters also use rollers and spray-guns to put on paint. A modern invention is paint in a pressurized can which can be sprayed on. Some modern artists also use spray paint. Factory paint shops have machines which spray paint onto objects. Cars are usually painted in this way. Paint must be allowed to dry. Some paints such as watercolour, dries in a few minutes. Other paints, such as artist's oil paint, can take days or even weeks to dry. Most other types of paints fit between these two. Many types of paint are best if they are put on in several layers. The painter must first prepare the surface so it is smooth, clean and dry. The first layer of paint is often an "undercoat" or "ground" which is smooth and sticks very well. The coloured paints are put on over the top. A house-painter who is using oil paint on a wooden window frame might used three layers of paint to give very good protection from the weather. Other types of modern house paint only need one layer, particularly on the inside. Artists using oil paint and tempera often use many layers to get just the right effect. == Uses of paint == thumb|200px|Painting the exterior of a building Paint has four important uses. === Protection === Paint is used to protect all sorts of buildings and structures from the effects of water and sun. Wooden buildings such as houses are usually painted because a coat of paint prevents water seeping into the wood and making it rot. The paint also helps to prevent the wood from drying out in the hot sun. Metal structures and objects of all sorts are painted to stop them from rusting. A very large steel structure such as a bridge must have a team of painters who keep the paint in good condition all the time. === Decoration === Paint is used to decorate all sorts of objects. Since pre-historic times, people have painted the inside walls of their houses to make them look attractive.The families that lived in the town of Catal Huyuk in Anatolia, 7,000 years ago, white-washed their walls every year. Painting and decorating the exterior (outside) and interior (inside) of houses is an important industry in many countries. There are many types and colours of paint to chose from. All sorts of other objects are painted to make them attractive. This includes furniture, toys, tools and utensils, and street fittings. Sometimes things made of wood such as furniture are painted in decorative patterns. In some countries, many people enjoy decorating furniture and other small things like trays and boxes. This is one form of what is often called Folk Art. In other countries such as Japan, painting furniture is a very skilled profession and an antique piece of decorated furniture is very valuable. Other people enjoy the hobby of painting small objects such as model planes or soldiers. === Art === thumb|200px|The artist Peter Graham in his studio Paintings are pictures that are done in paint. Many different types of paint are used for paintings. They include tempera, oil paint, gouache, watercolours and acrylic paints. The paintings are usually done on board, canvas or paper. Many other famous paintings are done on the walls and ceilings of buildings, such as the Sistine Chapel ceiling which was painted by Michelangelo. Many artists are famous for their painted pictures. Old, beautiful and famous paintings are very valuable and are sometimes sold for millions of dollars. Famous painters include Giotto, Leonardo da Vinci, Titian and Rembrandt. === Information === Paint is a very good way to give important information to people, using painted signs. Painted signs include lane markings on the road, street signs of all sorts, advertising signs and warning signs. ==Related pages== * Tempera * Oil paint * Oil painting * Watercolour