What’s that on the roof of Hollywood’s Standard Hotel? Is it a….giant light bulb? Well, yes. Artist Piero Golia has installed a permanent, orb-shaped light (clad in acryclic, lit by eight fluorescent tubes, and sitting on a large steel spindle and crown) on the roof, called Luminous Sphere, that is quite visible from traffic below. It looks a little bit like a glowing golf ball on a steel tee. In a particularly quirky (and egotistical?) move, the light will go on when Golia is in town and off when he is out of town (it can be controlled via the internet). The project was organized  by Culver City’s LA><ART and executed by Zellnerplus architects, Buro Happold engineers, and Benchmark Scenery fabricators. LA><ART, which focuses on site-specific work while also maintaining its own gallery, is celebrating its fifth anniversary. Sphere launches its LA Public Domain (L.A.P.D, get it?) program (also sponsored by local  group For Your Art) , promoting artistic interventions in experimental contexts. Now is that lightbulb a halogen?