How the ball lightning enters the room through the window panes

It is shown that Ball Lightning in a form of a self-confined light consisting of a thin spherical layer of a strongly compressed air where an intensive white light is circulating in all possible directions can penetrate into room through window panes. Only light penetrates through the pane. The compressed air cannot penetrate through the pane. But the air is located indoor in the room. The light compresses this air indoor in the same manner as it compressed the air outdoor. No plasma is connected with the natural Ball Lightning.