  At least three length scales are important in gaining a complete
understanding of the physics of nuclei. These are the radius of the nucleus,
the average inter-nucleon separation distance, and the size of the nucleon. The
connections between the different scales are examined by using examples that
demonstrate the direct connection between short-distance and high momentum
transfer physics and also that significant high momentum content of wave
functions is inevitable. The nuclear size is connected via the independent-pair
approximation to the nucleon-nucleon separation distance, and this distance is
connected via the concept of virtuality to the EMC effect. An explanation of
the latter is presented in terms of light-front holographic wave functions of
QCD. The net result is that the three scales are closely related, so that a
narrow focus on any given specific range of scales may prevent an understanding
of the fundamental origins of nuclear properties. It is also determined that,
under certain suitable conditions, experiments are able to measure the momentum
dependence of wave functions.
