Encaustic is a term used to describe a picture painted by means of heated wax. Encaustic painting is an ancient technique that was practised by the Greeks and Romans using melted beeswax. At the close of the 18th century experiments were made by Emma J Greenland to ascertain the ancient methods; but the process, in which gummastic and wax were the principle vehicles used, produced neither so brilliant a tint nor so durable a texture as oil painting. Research Encaustic
A varnish is a solution of resins or drying oils forming a transparent, hard, shiny surface on drying. Spirit varnishes use alcohol and other volatile liquids as the solvent, oil varnishes one of the drying oils, eg linseed oil, poppyseed, etc, usually diluted with oil of turpentine Resins dissolved in turpentine alone are often known as crystal varnishes. The usual resins are shellac, mastic, sandarac, etc, for spirit varnishes ; and amber, copal, kauri, etc., for oil varnishes. Lacquers are natural varnishes. Research Varnish
Mastic is a resin obtained from a shrub, Pistacia lentiscus, that grows in southern Europe. It is found in pale yellow, brittle tears that have a slight aromatic odour. It softens and melts when heated and used to be used in the preparation of varnish. Research Mastic
The Tyndall Effect is the scattering of light by fine suspended particles. If a beam of white light is passed through a colloidal suspension of a substance such as mastic in water, light will be emitted at right angles to the beam. Research Tyndall Effect
Mastic is a waterproof, plastic, putty-like substance used as a filler, sealant and jointing material that is plastic when applied and remains flexible after it dries. Mastic is used by builders, civil engineers and decorators and generally consists of bitumen, tar, resin, rubber or oil mixed with an inter fibrous or powdered filler. Research Mastic
Abbreviations
Research Encaustic
