Archived posting to the Leica Users Group, 2001/07/30
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]Actually, I remember an experiment we did in science class at school - long time ago. Got a flouro tube attached to nothing at all - ie. held in the hand - and stood underneath some high tensile power lines at night. The flouro tube emitted a faint glow. I can't remember the exact reason why because I was too busy not paying attention. It was school work, after all. :) Lucian G. Mxsmanic [mailto:mxsmanic@hotmail.com] Juan J. Buhler writes: > Sometimes they keep a faint glow for a few minutes. I've never seen this. I suppose some of the old-style lamps with heated filaments might continue to glow for an instant. Some phosphors might glow briefly as well. I can't remember actually observing anything like this, however, and it hardly seems like it would be any worse than the glow from an incandescent lamp. It sounds like an urban legend, actually, like the old myth about babies being blinded if you take a picture of them with a flash. When you turn off an incandescent lamp (_especially_ halogen lamps), it radiates in the infrared for a few minutes, too. Wouldn't that be just as much a problem?