What is Rembrandt lighting and how can it be effectively used in photography?

Rembrandt lighting is a technique in Photography where the subject is illuminated from one side, creating a triangle of light on the opposite cheek. This technique adds depth and dimension to the subject's face, creating a dramatic and artistic effect. To effectively use Rembrandt lighting in photography, position the light source at a 45-degree angle to the subject and adjust the intensity to create the desired shadow and highlight contrast.