Get some UV-reactive minerals or paint (or formulate clear lacquer) and you can get back a roomful of visible light for your effort! Better yet, you won't ruin eyes and cameras with too much UV all the time?
Well, some UV (or just sunshine) is fine! Moreover people can't see UV; but the plastic isn't up to perfect clarity so it downconverts some of the UV to violet (which is visible.) Oh! You make printed circuit boards (or other art?)...that's neat.
actualy, that depends. UVB rays can hurt your eyes. UV lights such as LEDs and the tube form only let out a A little bit of blue, violet, and part of the UVA spectrum.
not about the LEDs when comes to the blue and violet light, but i do know that the tube form lets out a small amount of radio waves in the form of incandecsense.
This is powerful.
pppoe 1 year ago
by how much volt is it powered?
fireworkfreak100 1 year ago
what do you do with it.
jaesungauzakim 1 year ago
what do you do with it?
jaesungauzakim 1 year ago
what resistor are you using? and what volt?
jaesungauzakim 1 year ago
luca, che ci fai con questo? ho intenzione di comprare una ventina di led uv per farci una torcia
fabrivassa 3 years ago
Looks very nice. Well done.
LuminolBlue 3 years ago
I like it and it looks cool. Not sure whether it's usefull - but my projects are the same... :)
and does it matter as long as it makes fun?
schizoembollo 3 years ago
very nice!
armaanid 3 years ago
Get some UV-reactive minerals or paint (or formulate clear lacquer) and you can get back a roomful of visible light for your effort! Better yet, you won't ruin eyes and cameras with too much UV all the time?
Norvesterdqy 3 years ago
You must use eye protection to see UV light else you could damage your eyes. I use this light to transfer my layout designs only.
lr137 3 years ago
Well, some UV (or just sunshine) is fine! Moreover people can't see UV; but the plastic isn't up to perfect clarity so it downconverts some of the UV to violet (which is visible.) Oh! You make printed circuit boards (or other art?)...that's neat.
SteveNordqu 3 years ago
actualy, that depends. UVB rays can hurt your eyes. UV lights such as LEDs and the tube form only let out a A little bit of blue, violet, and part of the UVA spectrum.
not about the LEDs when comes to the blue and violet light, but i do know that the tube form lets out a small amount of radio waves in the form of incandecsense.
Xxero0 3 years ago
;-D
WiAmp 3 years ago
This is 400 nm UV light. I can confirm 400 nm because you can see the typical fluorescence on some materials and scattering in paper.
UV wavelenght range is 10 - 400 nm, divided in sub-bands (UVA, UVB, UVC etc.) see wiki to read more info...
lr137 3 years ago
Yeah I use it about circuit boards, UV light is shielded by glass, so I can't get UV directly (generally glasses stop UV rays):D
lr137 3 years ago
This is violet not ultraviolet.
Typical 405nm UV Leds , one is less than 10mW radiation Power.
I have some 3W Violet Leds too on Star,
doing 350mW (equals 35 10mm/5mm Leds).
Nevertheless , nice project
WiAmp 3 years ago
U can get them from electronic components shop/seller...
lr137 3 years ago
u can get them off ebay 4 10 pounds
djlfg4life 3 years ago
Cool! Where did you get those UV leds?
jaesungauzakim 3 years ago