Symphonie-Diagonale

"While he was working on Symphonie Diagonale, Eggeling was evolving a theory based on his film experiments and his studies of form and colour. He called his theory Eidodynamik [visual dynamics]. Little is kown about it, but the fundamental principle was the projection of coloured lights against the sky to bear the elements of form." (Jennifer Valcke, Static Films and Moving Pictures: Montage in Avant-Garde Photography and Film, p172)