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View Full Version : Today's new hotness: lume


Hulk
10-10-2008, 01:09 AM
LEDs are so 2007. All the cool kids are doing lume.

Resource:
http://www.noctilumina.com/

Seriously, I'm starting to think about what 80 controls I might want to glow in the dark. :D

Uncle Ben
10-10-2008, 08:13 AM
That is so cool! Much nicer than LEDs for sure! :p: :hill:

60wag
10-10-2008, 12:30 PM
Hot as in radioactive? Have you ever read any of the stories about the clock manuafacturers that used to paint the numbers on clock faces? Look up the Elgin clock company. With the evironmental regulations such as RoHS, I surprised stuff like this is even available any more.

Hulk
10-10-2008, 01:45 PM
Hot as in radioactive? Have you ever read any of the stories about the clock manuafacturers that used to paint the numbers on clock faces? Look up the Elgin clock company. With the evironmental regulations such as RoHS, I surprised stuff like this is even available any more.

NoctiLumina pigments are are nontoxic, non-radioactive, and non-acidic. The pigments are very stable, with lifetimes conservatively expected to be in excess of 20 years.

Those old watches used radium, which was indeed radioactive. Since 1950, few watches were made with radium. Most modern glow-in-the-dark watches use non-radioactive phosphor compounds that will glow in the dark after being exposed to light. Some modern compounds can glow for 10 to 15 hours after a relatively short exposures to bright light.

Also, you should never eat red M&Ms. :D

60wag
10-10-2008, 04:04 PM
What, no radium? What will they think of next - I'd like to see phones without wires. Now that would be something! :)

nuclearlemon
10-10-2008, 05:48 PM
boy, treeroots rig is so boring now with all those old school leds:D

maybe he should paint his 80 in the stuff to make up for it

Uncle Ben
10-10-2008, 06:49 PM
boy, treeroots rig is so boring now with all those old school leds:D

maybe he should paint his 80 in the stuff to make up for it

or at least paint all the seems and major body lines with this stuff! At night it would look like a virtual exoskeleton! :p: :lmao::lmao: :flamingo::flamingo:

DaveInDenver
10-14-2008, 11:05 AM
Those old watches used radium, which was indeed radioactive. Since 1950, few watches were made with radium. Most modern glow-in-the-dark watches use non-radioactive phosphor compounds that will glow in the dark after being exposed to light. Some modern compounds can glow for 10 to 15 hours after a relatively short exposures to bright light.
The radium problem was back in the 1920 primarily at a company called U.S. Radium Corp. They used their radioluminescent paint (called Undark, always dug the name) on watch faces to make them glow and it worked well indeed. But the workers began getting sick and dying. Google the term 'Radium Girls' to read about it, but suffice to say think about paint brushes. Sometimes people lick the brushes to make them pointed and since they were painting details on watch faces, they often would wet and shape the bristles by licking them. They even have a name for it, radium jaw, because it deteriorated their jaws and eventually killed them. U.S. Radium was put out of business by 1927 (mostly by litigation and public protest, one of the first cases of a company losing lots of money for worker abuse and endangerment) and after that self luminous paint using radium was pretty much done. Although, Radium Dial Co. out in Chicago continued to sell their version (called Luma) to Westclox into the 1930s. But the use of radium ended mostly with the demise of U.S. Radium, primarily because it became taboo and public perception was so negative.

Up until the strontium aluminate stuff started showing up, the other half of Undark was still used, the zinc sulfide. Just instead of being self glowing it usually relied on incident UV to charge and eventually went dark. Another way they can do it was to use tritium as the energy source for the phosphor. People usually call the tritium powered devices betalights (since tritium, H3, is a beta emitter) and I think it's still used in some watches and is fairly common for emergency signs, gun sights and other things. But certainly the more advanced phosphorescence (i.e. NoctiLumina or Super-LumiNova) way is safer still than tritium for things you'll have in close contact with yourself.

Red_Chili
10-14-2008, 11:54 AM
Yep. No doubt about it. True Geek.

:lmao: