The real- and virtual-photon emission during interactions between few-nucleon systems have been investigated at KVI with a 190 MeV proton beam. Here I will concentrate the discussion on the results of the virtual-photon emission for the proton--proton system and proton--deuteron capture. Predictions of a fully-relativistic microscopic-model of the proton--proton interaction are discussed. For the proton--deuteron capture process the data are compared with predictions of a relativistic gauge-invariant impulse approximation and a Faddeev calculation. For the virtual photon processes, the nucleonic electromagnetic response functions were obtained for the first time and are compared to model predictions.

PACS numbers: 25.20.Lj