《Transformation》（转换）沿着12英寸x 37英寸的墙移动，穿过天花板，拐过一个弯，然后穿过玻璃墙进入地铁站的入口，在那里它又一次从墙移动到天花板。并且，当光线在长墙上结束时，它会向后弯曲，这本来是光线无法做到的，但 Stephen Knapp 让这件事发生了。

"Transformation" moves along the 12 "x 37" wall, through the ceiling, around a bend, and then through the glass wall into the subway station's entrance, where it moves again from wall to ceiling. And, when the light ends up on the long wall, it bends backwards, which the light isn't supposed to be able to do, but Stephen Knapp made it happen.