Drawing with light

Pablo Picasso - 1949

Pablo Picasso 1949

In 1949 Pablo Picasso was visited by Gjon Mili, known photographer and lighting innovator, who introduced him to some of his photographs of ice skaters with lights attached to their skates. Immediately Picasso started making images in the air with a small flashlight in a dark room. This series of photos became known as Picasso's "light drawings."
From Wikipedia - Light Painting

George Mathieu - 1957

Man Ray - 1935