- #1
fawk3s
- 342
- 1
So today I noticed something pretty weird on an exit sign above a door in my school, looking somewhat like this:
http://www.examiner.com/images/blog/wysiwyg/image/exit_sign.jpg
The effect is pretty difficult to describe by words, since I didnt expect to see anything like that on it. But it looked somewhat like the effect you would get in a dim pool room in the ceiling when the light in the pool would be on - a nice play of light by the water waves.
And this effect was in the sign, which presumably has a fluorescent light behind it. Ofcourse the effect is only on the sign and there is no water whatsoever nearby, so please let's rule this out. What could cause this effect?
I have no good guess besides maybe that the fluorescent bulb might have a filament or something inside it, which makes contacts with the glass shield and acts somewhat like a plasma lamp would? I know, crazy theory, plus I haven't heard of any of these kinds of bulbs, but its the best one I've got so far.
Any ideas?
Thanks in advance,
fawk3s
http://www.examiner.com/images/blog/wysiwyg/image/exit_sign.jpg
The effect is pretty difficult to describe by words, since I didnt expect to see anything like that on it. But it looked somewhat like the effect you would get in a dim pool room in the ceiling when the light in the pool would be on - a nice play of light by the water waves.
And this effect was in the sign, which presumably has a fluorescent light behind it. Ofcourse the effect is only on the sign and there is no water whatsoever nearby, so please let's rule this out. What could cause this effect?
I have no good guess besides maybe that the fluorescent bulb might have a filament or something inside it, which makes contacts with the glass shield and acts somewhat like a plasma lamp would? I know, crazy theory, plus I haven't heard of any of these kinds of bulbs, but its the best one I've got so far.
Any ideas?
Thanks in advance,
fawk3s