  In this talk I address three topics related to the shape of hadrons:
  1. The Lorentz contraction of bound states. Few dedicated studies of this
exist - I describe a recent calculation for ordinary atoms (positronium).
  2. Does the A-dependence of nuclear structure functions indicate a change of
proton shape in the nuclear environment? (My short answer is no.)
  3. The size of Fock states contributing to processes involving large momentum
transfers. End-point configurations can be transversally extended and yet
sufficiently short-lived to contribute coherently to hard scattering.
