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.
According to the Brittanica, chiaroscuro (from Italian chiaro, light; scuro, dark), which is technique employed in the visual arts to represent light and shadow as they define three-dimensional objects. Carracci also uses an intense spotlight on his face while the rest of the picture plane is murky surrounding him.