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FrozenGate by Avery

UV light from Tanning beds causes cancer

sk8er4514

sk8er4514

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Study: Tanning beds as deadly as arsenic - Cancer- msnbc.com

interesting article. I looked up what wavelength tanning beds emit and it is "tanning beds produce shorter and more powerful UVA wavelengths from 315 to 345 nanometers"

so the 405nm blu ray light isn't specifically causing cancer but I think this article would be a cause for concern to not shine your or other's skin for long periods of time.

-Kendall
 





I would say that since sunlight (both direct or indirect) can easily cause cancer, the risk is probably not any higher than spending a lot of time outdoors. Like you said, the low to mid 300nm range is most dangerous. I would not ignore the possibility of 405nm UV being slightly carcinogenic, but all the data I've seen says that it (and all visible wavelengths) is safe.
 
To be sure, I think one of LPF's members should build and test a PHR-803t tanning bed. Wonder if these diodes would have any use as hydroponic lighting? Plants love blue's and UV's in the growth stage...
 
Just about everything causes cancer, you just have to wait long enough...
 
wannaburn said:
Wonder if these diodes would have any use as hydroponic lighting? Plants love blue's and UV's in the growth stage...
Click to expand...

interesting idea.. One of my highschool friends had basically a street light in his closest, produced a ton of heat. some blu ray lasers would have been so much better if it can indeed create growth.
 
LOL I should post some pictures...

Wouldn't you need to heavily defract a laser to cover the growing area?

BTW I still have my Phototron,
cool-smiley-027.gif
 
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You use a laser if you need a laser beam. If you just want UV or near-UV light, a (non-laser) diode is much more efficient and rugged.
 
Actually, a quick google turned up the Seoul Semiconductor P8D140: at 3.5V/350mA it delivers 210mW of 405nm light. That's not a striking difference to BR diodes as used here, but then, these are operated way outside the manufacturers "absolute maximum ratings" (and I guess better LEDs could be found).

But I'll have to retract the "much more efficient" for now...
 
UV causes cancer?? NO WAY!!

Plants' photosynthesis activity peaks at 435nm and 680nm. In general, it converts most visible light besides green. A bluray is vastly insufficient as a grow light. I see anywhere from 25W to 50W of a power requirement per square foot. Anything besides fluorescent, metal halide, or high pressure sodium is a waste of time/energy/money.

sk8er4514 said:
I think this article would be a cause for concern to not shine your or other's skin for long periods of time.
Click to expand...

Because that's so much fun.
 
i dont think 405nm would penetrate the skin and damage dna the way deaper uvb &a will... you would have to burn yourself in my opinion pretty heavily before it did any "uv" damage. I think that flying is a much greater risk to developing skin cancer.... or huffing gasoline, that will do it everytime
 
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