Gamma, Alpha, Delta, Kappa Paintings: 1969-72
In l968 as a reaction to black and white, I got involved with systems of color, subtractive (pigment mixtures), additive color (mixtures of light) and human visual responses. I began painting with color on canvas and called the first series Alpha. In this series I used vertical sequences of color bands in a horizontal format. Bands of gradient colors alternated with bands of uniform color ranging from opposition to harmony varying the perception of the uniform color bands. Kappa is a more complex variation of Alpha. In the Delta series the bands are the same, alternating inversely so the visual effect, fixed to the center, is more intense.