Example image of eyePlorer eyePlorer map for 'Critical mass': Fissile Nuclear chain reaction Atomic nucleus Cross section (physics) Density Isotope separation Nuclear fission Shape Temperature Kelvin Allotropes of plutonium Beryllium Actinoid Neutron capture Prompt neutron Barn (disambiguation) Mean free path Random walk Optical depth Monte Carlo method Nicholas Metropolis Stanislaw Ulam Nuclear weapon Critical size Gun barrel Gun-type fission weapon Little Boy Prompt critical Shaped charge Geometric and Material Buckling Critical threshold Demon core Harry K. Daghlian, Jr. Insertion time Online refuelling Subcritical reactor Dual-Axis Radiographic Hydrodynamic Test Facility Frisch–Peierls memorandum Louis Slotin Mark 10 nuclear bomb Mark 8 nuclear bomb Missouri University of Science and Technology Nuclear Reactor MOATA Nuclear salt-water rocket Reactor operator SLOWPOKE reactor Tokaimura nuclear accident WR-1 Americium-242 Keno (computer program)