A Mystery re Fluorescent Lights I have a fixture F1 from the 1960s with two 2' fluorescent lights B1 and B2. Recently they both began to flicker. A second fixture F2 has a single 2' light B3 which did not flicker. In F2 I replaced B3 with B1. It did not flicker. I then replaced in F2 B1 with B2. It did flicker. I then in F1, put in B1 and B3. There was no flicker. The Mystery: Apparently in F1 the bad bulb B2 not only flickered itself, it also caused the good F1 to flicker. Has anyone an solution explaining this mystery?