Casimir and short-range gravity tests

Comparison with theory of Casimir force measurements are used to test the gravity force law at ranges from 0.1 to 10 micrometers. The interest of such tests depends crucially on the theoretical evaluation of the Casimir force in realistic experimental configurations. We present the scattering approach which is nowadays the best tool for such an evaluation. We then describe the current status of the comparisons between theory and experiments.