Known outside of the United States as perspex , this is a patented name for a transparent, colorless thermoplastic resin. It is usually used as a substitute for glass, especially in framing works of art. Fluids used to dissolve or dilute oil paints and their mediums. Turpentine, a distillate of pine resin, is good for thinning paints but should not be used for cleaning brushes. Unlike turpentine, paint thinner leaves no gummy residue, will not deteriorate with age, and does not cause as many allergic reactions.
Paint thinner is also less expensive than turpentine.
From the Latin word temperare, meaning to mix or regulate. Tempera is a type of painting medium used to bind pigments. The term may describe any combination of pigment and medium. Specifically, egg tempera describes a paint made using egg yolk as the binding medium. Egg has probably been used as a binder for pigments since antiquity.