These media or materials and characteristics are referred to as Modelling.
Modelling is an art in sculpture which involves an addictive process where materials are used to build up an object to form by hand or with tools.
Materials used include
As opposed to modelling is Carving which occurs from a reductive process of materials to form an object.
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In the mirrored ball, the objects are varying sizes, which allows certain objects or subjects (ex: man) to appear closer and others farther away (window), creating depth and form.
Sony designed a handheld gaming console (PSP)
<span>Creating the forms, tones, and contrasts of a painting by using dots of primary color is called pointillism.</span>