  The present work investigates the effect of an external rotating magnetic
field on a magnetic needle, and aims to study chaotic behaviour. The equation
of motion is modified to include damping and gravity. The bifurcation behaviour
of such evolving systems is also studied. Furthermore, the coupling in pairs of
magnetic needles is also analyzed. In addition, a 2-dimensional array of
coupled needles is set up, and the synchronization properties of the population
is studied. The study is completed by carrying out an investigation of the
effects of noise on the synchronization of such a system.
