Are you willing to take on the responsibility that comes with bringing trillions of universes into existence, each teeming with sentient life? That's something to ponder before plunking down $20 for this make-your-own-universe kit, created by artist Jonathon Keats.
If two events are possible, quantum theory assumes that both occur simultaneously – until an observer determines the outcome. For example, in Schrödinger's famous thought experiment, in which his cat may have been killed with a 50 per cent probability, the cat is both alive and dead until someone checks. When the observation is made, the universe splits into two, one for each possible outcome. For example, Schrödinger's cat would be alive in one universe and dead in the other universe.
According to the theory, any kind of measurement causes the universe to split and this is the basis of Keats' new device. His universe creator uses a piece of uranium-doped glass to create a steam of alpha particles, which are then detected using a thin sliver of scintillating crystal. Each detection causes the creation of a new universe.