Abstract
Since the discovery of 1/f noise generated from cathode rays by Johnson, several 1/f noises have been found in physical phenomena. So I try to make clear this phenomena by Shrodinger wave equation. When Shrodinger wave equation is applied to solve about time, in case of 1/f noise observed, a sin integral function was found in a solution of energy. And finally as the solution of equation, a rectangle wave, which stood alone was got. The example which showed a characteristic of isolated rectangle wave is found.
