Performance with upper body
If someone is lucid, they are thinking clearly again after a period of illness or confusion. The penumbra (from the Latin paene "almost, nearly") is the region in which only a portion of the light source is obscured by the occluding body. An observer in the penumbra experiences a partial eclipse.
With pencils taped to my fingertips I trace my ever-changing shadow allowing my body to dance with the light.