Eiffel Tower (Delaunay series) Eiffel Tower (Delaunay series) The Eiffel Tower series of Robert Delaunay (1885 – 1941) is a cycle of paintings and drawings of the Eiffel Tower. Its main sequence was created between 1909 and 1912, with additional works added up to 1928. The series is considered the most prominent art depicting the iconic Paris tower as well as the most prominent work of Delaunay. The series was painted in an emerging Orphist style, an art movement co-founded by Robert and Sonia Delaunay and František Kupka that added bright colors and increased abstraction to Cubism. The "Eiffel Tower" series sits chronologically and
Eiffel Tower gaps in the latticework. In the years since it was completed, engineers have put forward various mathematical hypotheses in an attempt to explain the success of the design. The most recent, devised in 2004 after letters sent by Eiffel to the French Society of Civil Engineers in 1885 were translated into English, is described as a non-linear integral equation based on counteracting the wind pressure on any point of the tower with the tension between the construction elements at that point. The Eiffel Tower sways by up to 9 centimetres (3.5 in) in the wind. When originally built, the first