This sculpture used incandescent bulbs and magnetic relay switches to do this. The sculpture as shown was in the process of removal (it is now gone.) I only saw this function for a brief period in the early 1970's. Given the technology that created it, it was probably doomed to a rather short lifespan. At what point does an artwork become a candidate for heritage or historical status? Technologically dependent works certainly get old much more quickly than simpler stuff. There was no plaque or indicator of its maker when I saw it. I think very few students recognized it as work of art.