4 ms·
Is that a UV-C bulb just exposed to the site above the fan? That doesn't seem safe.
by pstrateman 6y ago
Is that a UV-C bulb just exposed to the site above the fan?
That doesn't seem safe.
- rubidium 6y agoDepends on human level exposure. Probably fine as these are mounted on the ceiling.
- MertsA 6y agoSeems like they just reflect all the UV from the bulb up and are counting on the ceiling not reflecting a harmful amount. With the right ceiling material that could actually be a pretty good idea.
- exo762 6y agoI wonder how one can test if the amount of UV light reflected from the surface is dangerous? Alternatively, determine what is the percentage of the UV light absorbed?
- adrianN 6y agoThere are low cost armlets that change color when exposed to UV (they're supposed to tell you when you should get out of the sun). I imagine they would also work for UV-C.
- ballenf 6y agoBananas work well for that according to BigClive: https://www.youtube.com/watch?v=7lzq6LuVWH0 https://www.youtube.com/watch?v=7lzq6LuVWH0
- Scoundreller 6y ago> With the right ceiling material There's still a 'sunburn' on the linoleum floor in the basement pantry after I cleared some EPROMs with a germicidal fish-tank tube light. The kind that you can swap in place of a short (24"?) fluorescent tube. You can really see where the EPROMs were :)
- yencabulator 6y agoI have a wicking humidifier that uses a UV lightbulb to kill some germs on the way from the water tank to the wicking fan. Inside the machine, near the UV light, the dark gray plastic is now fully white.
- MengerSponge 6y agoBelow the fan wouldn't be safe. UVC doesn't reflect very well off many surfaces, and it's absorbed in air, so not much light is likely to reach the human room occupants.