Since the development of the quark model by Murray Gell-Mann (and also independently by George Zweig), the vector mesons have demonstrated the spectroscopy of pure states. The fact that the I = 1 rho meson (ρ) and I = 0 omega meson (ω) have nearly equal mass centered on 770– 780 MeV/ c, while the phi meson (φ) has a higher mass around 1020 MeV/ c, indicates that the light-quark vector mesons appear in nearly pure states, with the φ meson having a nearly 100 percent amplitude of hidden strangeness.