Jacques Cousteau and Pierre-Antoine was released in 1954. During the 1940s, Cousteau is credited with improving the aqua-lung design which gave birth to the open-circuit scuba technology used today. According to his first book, "" (1953), Cousteau started diving with Fernez goggles in 1936, and in 1939 used the self-contained underwater breathing apparatus invented in 1926 by Commander Yves le Prieur. Cousteau was not satisfied with the length of time he could spend underwater with the Le Prieur apparatus so he improved it to extend underwater duration by adding a demand regulator, invented in 1942 by Émile Gagnan. In 1943 Cousteau tried
20th-century French philosophy linguistics in the 20th century. He is widely considered the 'father' of 20th-century linguistics. This current was further explored by Claude-Levi Strauss in ethnology. His work influenced important figures like Jacques Derrida and Jacques Lacan significantly. From 1963, a magazine was run in Paris, called Tel Quel, which also dabbled excessively in structuralist analysis of texts. Important figures in this endeavour were Phillip Sollers, the magazine's editor, Julia Kristeva and Roland Barthes. Jacques Lacan (1901–1981) was specifically interested in the philosophy of psychoanalysis. He could be said to be relevant to the more modern foundations of discursive psychology. Post-structuralism is,