From the introduction: This special issue is dedicated to the exploration of experiments and experimentation. It follows a PhD. course entitled “Exploring and performing experiments” that we organized at Department of Digital Design and Information Studies in spring 2019. The course was attended by 12 PhD fellows, and during the course we and the participants decided to produce a special issue based on the participants’ PhD research projects. The literature for the course included a variety of texts and research articles focusing on experiments mainly from the field of Science and Technology Studies (STS). The readings included the work of Ian Hacking, Andy Pickering, Bruno Latour, Steven Shapin and Simon Schaffer, Isabelle Stengers, Shirle...