A Decade of Structure Function Measurements at Jefferson Lab

With fine precision and extensive kinematic coverage, experimenters at Jefferson Lab have been measuring nucleon and nuclear structure functions, polarized and unpolarized, in the range of momentum transfer $0.01 < Q^2 < 6$ GeV$^2$. These experiments have greatly increased our understanding of parton distributions, higher twists, duality, resonance excitations, non-perturbative QCD, and nucleons in the nuclear medium. Our present ability to determine moments of structure functions makes direct comparisons to QCD calculations and sum rules possible. I will present the state of our art.