material_used chop suey 
Chop Suey ( 1929 ) is a painting by Edward Hopper . The foreground of the work portrays two women in conversation at a restaurant . Edward Hopper ( July 22 , 1882  May 15 , 1967 ) was a prominent American realist painter and printmaker . While he was most popularly known for his ___MASK98___ paintings , he was equally proficient as a watercolorist and printmaker in etching . Both in his urban and rural scenes , his spare and finely calculated renderings reflected his personal vision of modern American life . ___MASK18___ is the process of painting with pigments with a medium of ___MASK44___ as the binder . Commonly used drying oils include linseed oil , poppy seed oil , walnut oil , and safflower oil . The choice of oil imparts a range of properties to the ___MASK60___ , such as the amount of yellowing or drying time . Certain differences , depending on the oil , are also visible in the sheen of the paints . An artist might use several different oils in the same painting depending on specific pigments and effects desired . The paints themselves also develop a particular consistency depending on the medium . The oil may be boiled with a resin , such as pine resin or frankincense , to create a varnish prized for its body and gloss . Etching is traditionally the process of using strong acid or mordant to cut into the unprotected parts of a ___MASK46___ surface to create a design in intaglio ( incised ) in the ___MASK46___ . In modern manufacturing , other chemicals may be used on other types of material . As a method of printmaking , it is , along with engraving , the most important technique for old master prints , and remains in wide use today . In a number of modern variants such as microfabrication etching and photochemical milling it is a crucial technique in much modern technology , including circuit boards .