Icon class icon_class fas fa-quote-left icon_class_computed fas fa-quote-left Related content Use multiple snippets to bridge knowledge gaps Focus BDD for the Positronium block Source Wikipedia Copyright information Text from Wikipedia and Wiktionary web pages quoted for educational purposes is subject to the Wikipedia Creative Commons Attribution ShareAlike Licence Snippet kind INFO Previous snippet Full quote Positronium (Ps) is a system consisting of an electron and its anti-particle, a positron, bound together into an exotic atom, specifically an onium. URL https://en.wikipedia.org/wiki/Positronium Next snippet The system is unstable: the two particles annihilate each other to predominantly produce two or three gamma-rays, depending on the relative spin states. Related snippets Related snippets (backlinks) The system is unstable: the two particles annihilate each other to predominantly produce two or three gamma-rays, depending on the relative spin states. In modern physics, antimatter is defined as matter which is composed of the antiparticles (or "partners") of the corresponding particles of 'ordinary' matter. In theory, a particle and its anti-particle (for example, a proton and an antiproton) have the same mass, but opposite electric charge and other differences in quantum numbers. For example, a proton has positive charge while an antiproton has negative ... Visit also Visit also (backlinks) Flags
