
What is a medium in art?
The term medium in art refers both to the type of art being created and the materials used to make the artwork. For example, painting, printmaking, and sculpture are types of art that are referred to as mediums. The materials used in these mediums include oils, acrylics, inks, and clay.
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Etching is a technique where a design is created on a metal surface by using a strong acid or mordant to eat away the unprotected parts of the metal, leaving the desired pattern in relief (intaglio). In modern art and manufacturing, different chemicals may be used depending on the material being etched.

Concrete Art is an art movement founded by the Dutch artist Theo van Doesburg in the 1930s. The movement emphasizes pure abstraction, focusing on geometric shapes and colors without any reference to the natural world or symbolic meaning. Unlike other forms of abstract art, Concrete Art is entirely non-representational and is based on mathematical principles and precise execution. It aims to create universal, timeless works by using simple, clear forms that emphasize objectivity and clarity.
