Show the northern lights the northern lights or aurora borealis is an atmospheric phenomenon seen in the northern hemisphere it appears in the form of arcs rays bands patches etc in various colors across the northern sky its cause is not known for certain but is believed to be some kind of electrical charge or magnetic disturbance one theory is that electrons from the sun encounter such gases as krypton and nitrogen in the upper rarified ramified atmosphere there is some connection between brilliant auroras and magnetic storms also with the number of sun spots the theory of arrhenius is is that the sun emits a flood of corpuscles corpus cles of a nature similar to X rays cathode rays electrons e etc tc and that these corpus on approaching the earth a abed ed on in the direction of the ickes es of its magnetic force around which they describe helices |