An elementary particle with zero charge and zero mass.
A lepton with no electric charge. Neutrinos participate only in weak and gravitational interactions and are therefore very difficult to detect. There are three known types of neutrinos, all of which are very light and could possibly have zero mass
uncharged atomic particle of less mass than neutron.
> In physics, any of three uncharged elementary particles (and their antiparticles) of the lepton class, having a mass too close to zero to be measured. The most familiar type, the antiparticle of the electron neutrino, is emitted in the beta decay of a nucleus. The other two are the muon and tau neutrinos.
US physicists at Los Alamos National Laboratory announced 1995 that neutrinos have a mass of up to 5 electronvolts (one hundred-thousandth of the mass of an electron).
Supernova 1987A was the first object outside the Solar System to be observed by neutrino emission. The Sun emits neutrinos, but in smaller numbers than theoretically expected. The shortage of neutrinos is one of the biggest mysteries in modern astrophysics. + prikaži više