Sistine Chapel ceiling of the Sistine Chapel. At the outset, the plaster, "intonaco", began to grow mold because it was too wet. Michelangelo had to remove it and start again. He then tried a new formula created by one of his assistants, Jacopo l'Indaco, which resisted mold and entered the Italian building tradition. Because he was painting "fresco", the plaster was laid in a new section every day, called a "giornata". At the beginning of each session, the edges would be scraped away and a new area laid down. The edges between "giornate" remain slightly visible; thus, they give a good idea of
Ceiling Painting/Yes Painting Ceiling Painting/Yes Painting Ceiling Painting/Yes Painting is a 1966 conceptual artwork by the Japanese artist Yoko Ono. The work is made from paper, glass, a metal frame, a metal chain, a magnifying glass, and a painted ladder. The word YES is printed on the piece of paper. The work is interactive, with the viewer (or participant) expected to climb the ladder and use a magnifying glass to look at the word 'YES' which is printed on paper beneath a sheet of glass suspended from the ceiling. The work was shown at Ono's autumn 1966 show, "Unfinished Paintings and Objects By