This doctoral dissertation intends to capture, to analyse, to think and to feel, resistances, communication practices and forms of deliberation from the social movements opposed to the French nuclear program, from 1962 to 2010. It aims at including in the theoretical field these outbursts and this protest excitement, generated by the development of a technopolitics application, as actively participating in the process un-routinization and renewal of structures and themes of public sphere. This latter is considered here both as an institution specific to contemporary societies, socially and historically constructed as a political project and as a variation of thereof. This work leads us to propose renewals of theoretical formulations of the concept of public sphere, questioning the paradigms on which this concept is based, in the light of our researches and our empirical validations of the anti-nuclear phenomenon. To do so, we rely on a pragmatic and phenomenological approach of the public sphere and social movements, rather than a prescriptive design of these concepts rigidified by static theoretical frameworks and pre-determined by political philosophy. The objective is to underline the heuristic potential of the concept of oppositional public space, by re-registering in the dynamics of conflict established. In this perspective, this doctoral research is rooted in an epistemological approach included in of information and communication science, considering the public sphere as one of the multiple social logics of communication.