The principle of organizing colours and the light intensity indicators indicated in the diagram give some idea of the capabilities of the light-colour electrical apparatus created by G. I. Gidoni. The Luce scale (vertically) adjusted the light intensity: from the conditional point A, located outside the keyboard and meaning complete darkness, to O – dazzling maximum illumination. The eight gradations of illumination in the diagram are numbered with Roman numerals. Three Colour columns (with Arabic numerals), based on the author’s explanations, represented the general range of colours: 1, 2, 3 – yellow; 4, 5, 6 – orange; 7, 8, 9 – red; 10, 11, 12 – purple; 13, 14, 15 – blue; 16, 17, 18 – blue; 19, 20, 21 – green; 22, 23, 24 – greenish-yellow.
Links to Third-Party Publications:
Gidoni G.I. The Art of Light and Colour: Introduction. L.: Author’s publication, 1930; Kolganova O. V. First evening of the Art of Light and Colour by G. Gidoni // Opera musicologica. Scientific journal of the St. Petersburg Conservatory. No. 4 [34]. 2017. pp. 72–94. https://www.academia.edu/35762549/The_First_evening_of_Art_of_Light_and_Colour_by_G_Gidoni_
