another enigma..... BLACK LIGHTS..... to use or not to use?

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Posted by IGUANA JOE on January 26, 2001 at 16:47:19:

Well, it's been a year since someone posted on the topic of Black lights.
Last time i checkes, it was still a hot debate.
The thing is, they produce a lot more of UVA, and more UVB than full spectrum's... and UVA rays do go through glass.

We humans ca see b/w 400-700 nanometers of "visible" light.
Anything below 400, we cannot see.

UVA ranges b/w 320 and 400, UVB b/w 290 and 320, and UVC somewhere b/w 200-290.

UVA is more related to natural behavior, such as breeding etc., while UVB is related to synthezising Vit. D3.

So if used during the day, Black lights can be quiet beneficial, but the reason why someone would buy them for night time usage, is becasue we can hardly see any light coming out of it.

The debate lies on the question of whether the animals see below 400 nanometers, and if so, Black lights would make a poor choice for nightime usage.

Does anybody know if this theory was approved?
Are black lights good or bad?
Im not talking about pop-art BLB (Black-light-Blue) lights.

thanx in advance!

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: Well, it's been a year since someone posted on the topic of Black lights. : Last time i checkes, it was still a hot debate. : The thing is, they produce a lot more of UVA, and more UVB than full spectrum's... and UVA rays do go through glass. : We humans ca see b/w 400-700 nanometers of "visible" light. : Anything below 400, we cannot see. : UVA ranges b/w 320 and 400, UVB b/w 290 and 320, and UVC somewhere b/w 200-290. : UVA is more related to natural behavior, such as breeding etc., while UVB is related to synthezising Vit. D3. : So if used during the day, Black lights can be quiet beneficial, but the reason why someone would buy them for night time usage, is becasue we can hardly see any light coming out of it. : The debate lies on the question of whether the animals see below 400 nanometers, and if so, Black lights would make a poor choice for nightime usage. : Does anybody know if this theory was approved? : Are black lights good or bad? : Im not talking about pop-art BLB (Black-light-Blue) lights. : thanx in advance!

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