physics, mathematical physics, philosophy of physics theory (physics), model (physics) experiment, measurement, computable physics Axiomatizations Tools Structural phenomena Types of quantum field thories examples The spinning string is a variant of the string in direct analogy (but one worldvolume dimension higher) to how the spinning particle is a variant of the particle. (Which means that “spinning” here is not in the sense of “rotating”, but in the sense of the kind of “intrinsic” spin as...