Composition : I have to agree with the other commenters that the tilt of the floor distracts. Also, finding a way to eliminate the "seam" of the wall and the floor would have helped tremendously.
Exposure/Lighting : The upper right hand background has more light than I think you intended. I got more caught up in the texture of the background then in the motion of the bulb.
Focus : I love the sharp focus on the threads in the bulbs starting place. Excellently done.
Post Processing : B/W was a excellent choice for this shot. It seems a bit grainy, but I like that aspect :)
Emotion/Challenge : You met the challenge and more :) Very interesting concept and extremely clever use of title. (Some folks say a title doesn't matter, I say some folks are wrong :) )
Opinion : This is a wonderful concept and I hope you revisit it, make a few small changes, and share the result :) I find a piece of fabric sometimes is the best background since it can be seamless... No tell-tale line where the floor ends and the wall begins. Just a thought :)
I'd try this from a different (higher?) angle so you don't have the visible seam where the foreground surface meets the back "wall," splitting the final image of the bulb. I like the overall concept.