  A non-perturbative mass of $0.2719 g^2 T$ is generated for the magnetic
sector of the $SU(2)$ gauge theory at high temperature due to the condensation
of Polyakov \cite{Pol} monopole and antimonopole which form a magnetic glue
ball. String tension for the spatial wilson loop is calculated which is of the
same order of magnitude and has same temperature dependence as obtained from
lattice simulation.
