  The standing wave model describes the well-known phenomenon of
superconductivity in a new way [1]. Starting from a new definition of
superconductivity, a microscopic London relation is derived from first
principles. The relation between the macroscopic electric current and the field
is derived from this microscopic relation. The coherence length as function of
the superfluid density is derived from the microscopic theory. The critical
temperature as function of the superfluid density is thus obtained. These
results are compared to the experimental work of Bozovic et. al. [2].
