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Yeah so for someone who can “see” uv light what does that mean? No one can see light we only see the reflection off surfaces.

BurningFrog 3y ago
The way to distinguish it is to look directly at the UV light "bulb". If you can see that unreflected light you have very unusual sight powers. I don't now if this is even possible, but someone up thread claims they can do it.
- deleted 3y ago
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- RoyalHenOil 3y ago
  If you have a UV light and look at the bulb or LED, you don't see any light coming from it at all? The bulb just looks to you like it isn't on? UV bulbs look bright purple to me. They are so intense, I can barely even look at them directly. I always thought they were called black lights because they do not appear to light up a room (excepting materials that fluoresce under UV light); the UV light itself is very bright, but everything else stays almost as black as if there were no light at all. I don't think I can see UV light, though. I don't see UV patterns on flowers that have them, for example. I think I am just seeing some violet light that UV bulbs also release, and maybe it feels so bright because the invisible UV stings my eyes.
  - colechristensen 3y ago
    Everyone can see that. Those old “black light” fluorescent tubes had filters that eliminated most of the visible light and appeared a dim purple when on… but modern UV LEDs and such emit plenty of visible light.
  - lm28469 3y ago
    > UV bulbs look bright purple to me. That's because they emit a bit of violet light too > maybe it feels so bright because the invisible UV stings my eyes. Afaik the problem with UV is that your eyes don't feel them immediately, the pain comes hours later
colechristensen 3y ago
Fluorescent things shift frequencies, normal light reflection does not. You wouldn’t see any UV light in a dark room unless it struck something fluorescent. Plenty of things are not at all fluorescent.

BurningFrog 3y ago

The way to distinguish it is to look directly at the UV light "bulb". If you can see that unreflected light you have very unusual sight powers. I don't now if this is even possible, but someone up thread claims they can do it.

deleted 3y ago
[deleted]
RoyalHenOil 3y ago
If you have a UV light and look at the bulb or LED, you don't see any light coming from it at all? The bulb just looks to you like it isn't on? UV bulbs look bright purple to me. They are so intense, I can barely even look at them directly. I always thought they were called black lights because they do not appear to light up a room (excepting materials that fluoresce under UV light); the UV light itself is very bright, but everything else stays almost as black as if there were no light at all. I don't think I can see UV light, though. I don't see UV patterns on flowers that have them, for example. I think I am just seeing some violet light that UV bulbs also release, and maybe it feels so bright because the invisible UV stings my eyes.
- colechristensen 3y ago
  Everyone can see that. Those old “black light” fluorescent tubes had filters that eliminated most of the visible light and appeared a dim purple when on… but modern UV LEDs and such emit plenty of visible light.
- lm28469 3y ago
  > UV bulbs look bright purple to me. That's because they emit a bit of violet light too > maybe it feels so bright because the invisible UV stings my eyes. Afaik the problem with UV is that your eyes don't feel them immediately, the pain comes hours later

colechristensen 3y ago

Fluorescent things shift frequencies, normal light reflection does not. You wouldn’t see any UV light in a dark room unless it struck something fluorescent. Plenty of things are not at all fluorescent.