Monthly Archives: July 2018
Red pigment is obtained due to high iron oxide red earth. For thousands of years, a bright red dye has been extracted from cochineal: to obtain 100 grams of pigment, about 14 thousand of these frayed insects were needed. They were collected from grass of a certain species or from a cactus.
With great difficulty, a purple dye was also obtained. It was obtained from the glands of the murex mollusk: for the sake of 100 grams of purple 100 thousand mollusks parted with life. Curiously, for humans, red is a danger sign, while most animals do not distinguish it at all. Birds are well seen in the red spectrum and, perhaps, therefore, flock to red fruits. Continue reading
The beginning of the way
According to Felix Scheinberger, the author of Watercolor Sketching, the paint begins with pigment, a powder concentrate that determines its color. Pigments are vegetable, mineral, containing metals or their oxides. Dyes are mixed from hundreds of organic and inorganic substances that are initially in powder form. To become a paint, a pigment needs a binder, which holds all the components and fixes them on paper after drying.
In the Middle Ages, pigments were mixed with egg yolk to obtain tempera. Continue reading