Strangeness in the Nucleon: – a summary from electron scattering experiments and projection on neutrino scattering experiments

Strangeness content inside the nucleon has been one of the most important topics for understanding structure of the nucleon. Using electron scattering off nucleon targets, the strangeness component and its electric, magnetic and spin properties have been studied. Neutrino nucleon scattering is ideal to measure the axial structure of the nucleon, so that strange quark spin, Δs, can be directly determined. Expected intensive neutrino beams in the near future will allow determination of Δs with precision of δ(Δs)∼0.03.