noob question on black light

THE SYNDICATE · Postby **THE SYNDICATE** » August 25th, 2009, 7:44 am

i know there are the black lights that show kind of purplish when powered,but is there black light in other colours as well?

orange,green, red,etc.?

thanks.......

Postby **nervewrecker** » August 25th, 2009, 7:59 am

wrong forum THE SYNDICATE.
but as far as I know there wont be other colours of black light, the black light is a ultraviolet light that gives of light in the lower frequency range of the uv portion of the electromagnetic spectrum.
the uv range falls right outside the limits of what the human eye is capable of seeing, if the light was to be of a higher frequnecy you wont be able to see anything from the light, the frequency of light taht the bulb gives off is near the viloet range of the visible light portion so it seems a bit purple.

I hope you not considering putting one of these in your car, you know uv light damages genetic matter right?

THE SYNDICATE · Postby **THE SYNDICATE** » August 25th, 2009, 8:23 am

the way a black light makes things glow kind of purplish,i thought their were different types of black lights that could make things glow in diff. colours as well.(not to familiar with this kind of stuff so sry bout the ques.)

didn't know it damages genetic matter...........learned something their!

now i know their isn't something for my application,i'll reconsider!

thanks for the info slacker jack..

Postby **nervewrecker** » August 25th, 2009, 8:43 am

While "black lights" do produce light in the UV range, their spectrum is confined to the longwave UVA region. Unlike UVB and UVC, which are responsible for the direct DNA damage that leads to skin cancer, black light is limited to lower energy, longer waves and does not cause sunburn. However, UVA is capable of causing damage to collagen fibers and destroying vitamin A in skin.

http://en.wikipedia.org/wiki/Ultraviolet

scroll down to black light, second paragraph.

uv light is used for sterilization of some foods & as discinfection in wastewater treatment, it is used in the beetham wastewater treatment plant.

noyztoyz · Postby **noyztoyz** » August 25th, 2009, 9:03 am

see how simply they said in that article that uv light damages genetic matter and causes skin cancer, its not so simple, it has more to do with the harmful things we put into our bodies, their distribution in peripheral tissues, and then uv light acting on them to cause mutations which lead to the cancer. :shock:

silent_riot · Postby **silent_riot** » August 25th, 2009, 12:39 pm

What about trying a deep purple light instead?
I'm sure there are knock offs of UV lights available.
It should give you a close effect without exposing you to too much UV.

Postby **nervewrecker** » August 25th, 2009, 12:43 pm

^^^

I think he wants the white stuff to glow, normal purple bulb wont do that.

silent_riot · Postby **silent_riot** » August 25th, 2009, 12:57 pm

Oh I now understand...
A nice read about black lights...
http://science.howstuffworks.com/black-light1.htm

ruffneck_12 · Postby **ruffneck_12** » August 27th, 2009, 3:07 pm

*hijacking ched* I hav a neon that blinks to music, over time will it conk out due to coming off and on so much? and how long will it take for it to go *poof*?