>>694329the thing on the right is the demon core
basically a ball of radioactive material enclosed in a bunch of metal which was used to study radioactivity in the times before proper procedures for such materials were normalized
it's safe to handle as long as the cover isn't on completely, if it did the core would go supercritical, killing everyone in the room
there was a famous accident where a scientist was playing with it while holding up the cover with nothing but a screwdriver
it eventually slipped and the thing started emitting deadly radiation, a few seconds were enough to give him a lethal dose
you can surely see where this is going