A portrait in contemporary rationality: Gaston Bachelard

Revolution and Scientific developments which happend in beginning of the 20th century especially in mathematics and physics deep influenced in The emergence of new form of the conceppt of contemporary rationalizm. The aim of this study is to evaluate Gaston Bachelardian diagnosis of contemporary crisis of rationalism and to analyze and evaluate Bachelard concept of rationality. The subject of the study is to analyze the crisis of contemporary rationalizm and to compare the concept of taraditional rationality with the concept of Bachelard's rationality in order to show his role and importance in the contemporary period. In this study, the concept of rationality will be presented by establishing a dialogue between the philosophers known as rationalists and the empiricist philosophers. In this study, Bachelard's concept of "Contemporary Rationality" analiz will be analyzed and criticized and new ideas and concepts put forward in his philosophy will be explained. This contemporary Bachelardian Rationality is based on new method and concepts, namely psychoanalysis, epistemological break, epistemological obstacle, scientific dialectic. In this study, a comparative and analytical method was used to demonstrate the renewal nature of Bachelardian rationalism. In conclusion, this study demonstrates the importance of Bachelard's great philosophy in the contemporary period, despite some contradictions that Bachelard has fallen into. Key Words: Rationalism, Scientific Revolutions, Scientific Psychoanalysis, Epistemological Break, Epistemological Obstacle, Scientific Dialectics.