Leptons are a family of elementary particles, alongside quarks and gauge bosons (also known as force carriers). Like quarks, leptons are fermions (spin- particles) and are subject to the electromagnetic force, the gravitational force, and weak interaction. But unlike quarks, leptons don't participate in the strong interaction. There're six flavours of leptons, forming three generations. The first generation's the electronic leptons, comprising the electrons, and electron neutrinos ; the second'… (More on Leptons)