极光帘Aurora Curtains

用指尖或鼠标去拨极光的下摆，波纹会沿着光帘跑开。停在下面，它会亮起来、慢慢变成玫瑰色，停久了，头顶会张开一顶光冕。快速划过会激起一道闪光；碰一碰湖面，倒影就荡开。Brush the hem of the aurora with your finger or pointer and ripples run along it. Rest beneath it and it brightens and turns rose; rest long and a corona opens overhead. Sweep fast to set off a flare; touch the lake and its reflection rings.