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Antibacterial Blu-Ray?

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kinesis

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I know at target they have this little device in the dental care aisle that is a little box where you put your
toothbrush inside and it has a ultraviolet light inside of it that sterilizes the germs from your toothbrush
will a 405nm laser have this sterilization effect if i shine it on my toothbrush also?
 





i dont really know if a 405nm wavelength would sterilize anything, maybe you just need UV light to do it..

i was told that when you want to sterilize a room you have to use high powered UV lamps and everybody should leave that room, so i'm guessing it's not good for the health (and anybody in there would automatically contaminate said room).



[Switchez jumps in shouting CANCER, CANCER!]
 
Bluray light isn't a short enough wavelength to cause any cellular damage... the lamps they use for disinfecting are UVC lamps, between 100 and 200nm... Bluray is 400nm and is classified as UVA, which for years was considered completely harmless, though now they're beginning to find longterm daily exposure can contribute to cancer. Unless you're pointing your bluray at one patch of skin all day long every day for many years, it has no effect.

for more info check out: http://en.wikipedia.org/wiki/Ultraviolet
 
Actually blu-ray isn't really UV, it's pretty visible , and it's not even classified as UV since it's above 400nm.UVA is <400nm. :P Maybe a good 150mW might sterilize something just cause of the sheer power. :D(though I have pointed 150mW of red at some fungus growing in my room and nothing... :-/)
I also saw those toothbrush boxes on DX, but that little lamp is way lowpowered.
Am I forgeting something? Oh yea....I wouldn't really use one of those....you'd think it has no effect, but ten years later BAM!! teeth cancer :P
 
(though I have pointed 150mW of red at some fungus growing in my room and nothing... )
Click to expand...


aww, too bad to hear your fungus is still alive :(


maybe you can apply a cancer laser injection to it :)
 
nikokapo said:
(though I have pointed 150mW of red at some fungus growing in my room and nothing... )
Click to expand...


aww, too bad to hear your fungus is still alive :(


maybe you can apply a cancer laser injection to it :)
Click to expand...

Yeah , I'm gonna try to suntan it with the blu-ray when I get to build it.If that won't work I'll have to wait till I get money for my IR laser. :-/
 
Switch said:
[quote author=nikokapo link=1213060192/0#4 date=1213119899]
(though I have pointed 150mW of red at some fungus growing in my room and nothing... )
Click to expand...


aww, too bad to hear your fungus is still alive :(


maybe you can apply a cancer laser injection to it :)
Click to expand...

Yeah , I'm gonna try to suntan it with the blu-ray when I get to build it.If that won't work I'll have to wait till I get money for my IR laser. :-/[/quote]


Just buy some canned cancer!


PS: we need to either stop with the cancer jokes (NOT!) or start a thread :P
 
pseudolobster said:
Bluray light isn't a short enough wavelength to cause any cellular damage... the lamps they use for disinfecting are UVC lamps, between 100 and 200nm... Bluray is 400nm and is classified as UVA, which for years was considered completely harmless, though now they're beginning to find longterm daily exposure can contribute to cancer. Unless you're pointing your bluray at one patch of skin all day long every day for many years, it has no  effect.

for more info check out: http://en.wikipedia.org/wiki/Ultraviolet
Click to expand...

Well 254nm UV light is germicidal. But yes Blu Ray will not have a very noticable effect, even though it is UVA that causes skin cancer, because most of the UVB, all UVC, X and y rays, and beyond, are blocked by the earths athmosphere unlike UVA. And very small quantities of UVB (the light that reacts with a skin protein to produce the B vitamin) will penetrate, insufficiently to cause cancer.
 
Blu-ray isn't UVA is it? UVA is only <400nm as I recall.And UVB is also what causes suntan and sunburn.
 
Switch said:
Blu-ray isn't UVA is it? UVA is only <400nm as I recall.And UVB is also what causes suntan and sunburn.
Click to expand...
There are UV Lasers around from 200nm-300nm, do they cause cancer? What about UV LED's? Wow... so many things cause cancer...
 
UVB LEDs are rare, expensive and low powered, so I would guess hardly. But in theory, with enough of the right (or wrong) wavelengths, the possibility is there.
 
I don't know about that, that would mean that our ozone layer can replenish itself if we give it time. But I think they use elecrolisys to obtain ozone.
 
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