Tempera. Tempera, also known as egg tempera, is a permanent, fast-drying painting medium consisting of pigments mixed with a water-soluble binder medium, usually glutinous material such as egg yolk.
   Tempera also refers to the paintings done in this medium. Tempera paintings are very long-lasting, and examples from the first century AD still exist.
   Egg tempera was a primary method of painting until after 1500 when it was superseded by oil painting. A paint consisting of pigment and binder commonly used in the United States as poster paint is also often referred to as tempera paint, although the binders in this paint are different from traditional tempera paint.
   The term tempera is derived from the Italian dipingere a tempera, from the Late Latin distemperare. A 1367 tempera on wood by Niccolò Semitecolo.
   Tempera painting has been found on early Egyptian sarcophagus decorations. Many of the Fayum mummy portraits use tempera, sometimes in combination with encaustic painting with melted wax, the alternative painting technique in the ancient world. It was also used for the murals of the 3rd century Dura-Europos synagogue. A related technique has been used also in ancient and early medieval paintings found in several caves and rock-cut temples of India. High-quality art with the help of tempera was created in Bagh Caves between the late 4th and 10th centuries and in the 7th century in Ravan C
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