"operating light" in the context of a theater or medical operating room is a specialized, high-intensity medical light designed to illuminate the surgical field without creating shadows. It uses a multi-point source or a large circular plate of lights to eliminate shadows by ensuring the area shadowed by one light source is illuminated by another from a different angle. These lights provide bright, homogeneous, and true-color illumination for surgical procedures, with features like adjustable intensity, color temperature, and sterile handles for control.