Raphaël Zarka: Tautochrone

The fastest curve in the world. Behind the conciseness of this statement, worthy of a fairground attraction, lie several centuries of research and challenges between scientists to define the calculation of a cycloid. Nicknamed "the Helen of geometers", it's hardly surprising that its history and properties have captured Raphaël Zarka's attention and curiosity, as his interests converge on movement and its applications, or more precisely on the objects, architectures, and devices capable of generating and measuring it.