Fundamental Forces

[[A stick figure lectures]] Figure: There are four fundamental forces between particles: (1) Gravity, which obeys this inverse square law: Fgravity = G(M1M2) d^2 Off-panel: Ok... Figure: (2) Electromagnetism, which obeys this inverse-square law: Fstatic = Ke (q1q2) d^2 Figure: ANd also maxwell's equations Off-panel: Also what? Figure: (3) The Strong Nuclear Force, which obeys uh... well, umm... It holds protons and neutrons together. Off-panel: I see. Figure: It's strong. Figure: And (4) The Weak Force. It [mumble mumble] radioactive decay [mumble mumble] Off-panel: That's not a sentence. You just said "Radio- Figure: -And those are the four fundamental forces! {{Title text: "Of these four forces, there's one we don't really understand." "Is it the weak force or the strong--" "It's gravity."}}

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