  YBa2Cu3O7 high temperature superconductor samples were weighed on an
electronic balance during a warming cycle beginning at 77 degrees K. The
experiment was configured so that the YBa2Cu3O7 material was weighed along with
a magnet, a target mass, and liquid Nitrogen coolant. The weights were captured
during Nitrogen evaporation. Results indicated unexpected variations in the
system weight that appear as a function of temperature and possibly other
parameters.
