Double image with ceramic colors in the process of infrared painting

Abstract: Expanded spectrograms of pigment light absorption and inks for coloring ceramics are being presented in this article. The experimental part of the paper covers two spectral areas: Visual “V” and the first part of the near infrared spectrum “Z”. The values of light absorption at 1000 nm are being assigned to each dye. New experiences are dyes with metallic components: silver and gold. Those colors have a light tone but they intensively absorb NIR light. This is a new experience in painting double, invisible and image information. A spectral description of the dye and the numerical value in Z position is a new experience of connecting science and visual arts. Those colors are new evidence about a absence of any kind of connection, that is, a absence of correlation of measuring values of light absorption in the visual domain and near infrared radiation. Nada Žiljak’s art is being presented in “Sveti Ivan Zelina” gallery where the newly developed cameras with a few different filters and assigned blockages with which visual fine art is being detected with dual hidden graphics are being set up.