油彩
Oil paint comprises ground pigment mixed with linseed and perhaps other oils. It is a medium which takes a long time to dry, and lends itself to varied methods and styles of application. It can be used on a rigid wooden panel, but because it remains flexible, it can also be applied to a base of canvas made from densely woven linen flax, hence, the linseed oil and the canvas base are both products of the same plant which is harvested in Northern Europe. With canvas spread over a wooden frame as a base, paintings can be made very large and still light in weight, and relatively transportable though liable to damage.