Pulmonary embolism is the sudden blockage of a major blood vessel (artery) in the lung, usually by a blood clot . In most cases, the clots are small and are not deadly, but they can damage the lung. But if the clot is large and stops blood flow to the lung, it can be deadly.
The term chiaroscuro (from the Italian words chiaro, meaning light, and scuro, meaning dark) refers to the use of light and shade in a work of art to define three-dimensional objects. Masters of this technique were the Italians Leonardo da Vinci and Caravaggio and the Dutch painter Rembrandt.
Definition of chiaroscuro. plural. -ros. 1 : pictorial representation in terms of light and shade without regard to color. 2a : the arrangement or treatment of light and dark parts in a pictorial work of art The artist uses chiaroscuro to create the perception of depth in a two-dimensional work.b : the interplay or contrast of dissimilar qualities (as of mood or character)