Positive and Negative Space - Robert Motherwell

Robert Motherwell, Elegy to the Spanish Republic, 70, 1961

Abstract Expressionist, Robert Motherwell (1915-1991) explores the interplay of formal elements on a huge surface in a painterly manner to find content with universal meaning.

Visit the Metropolitan Museum of Art link for more information. 

Link Robert Motherwell (MetMuseum)

Positive and Negative Space - Franz Kline

Franz Kline (on stool) talking to unknown associate, Life Magazine 1958

The Abstract Expressionist painter, Franz Kline (1910-1962) composed with scale, the energy of the mark, and tensions found between positive and negative space to creating pictorial meaning. The shear size and physicality of select work engulfs the viewer in a titanic spacial struggle.

A good, brief online video about Positive and Negative space can be found at the link below.

Link Expert Village

Link Wiki, Franz Kline