Phase 5: Construction Administration. Finally, once you have selected a contractor and construction is under way, we move into the fifth phase of the architectural design process â construction administration.
The neutron is a subatomic particle, symbol n or n0 , with no net electric charge and a mass slightly larger than that of a proton. Protons and neutrons constitute the nuclei of atoms.
A neutron star is the collapsed core of a large star (10â29 solar masses). Neutron stars are the smallest and densest stars known to exist. With a radius on the order of 10 km, they can, however, have a mass of about twice that of the Sun.