Chiaroscuro is an artistic technique that uses LIGHT and shade to create a dramatic effect in painting. It is also known as 'clarity-obscurity' and was developed during the Renaissance period. The term is derived from the Italian words for 'LIGHT' and 'DARK'. Chiaroscuro is used to create contrast between LIGHT and DARK elements in a painting, creating a sense of depth and atmosphere. This technique is often used to create a sense of drama and emotion in a painting.