Slashdot Mirror


A Super-Efficient Light Bulb

Chroniton writes with news of a Silicon Valley company, Luxim, that has developed a tiny, full-spectrum light bulb, based on a plasma of argon gas, that gives off as much light as a streetlight while using less power. The Tic Tac-sized bulb operates at temperatures up to 6000K and produces 140 lumens/watt, almost ten times as efficient as standard incandescent lamps, and twice the efficiency of high-end LEDs. The new bulbs also have a lifetime of 20,000 hours. There's no mention of mercury or other heavy metals, which pose a problem for compact fluorescents.

3 of 468 comments (clear)

  1. Re:Commercial use by mikael · · Score: 4, Interesting

    In the video, the inventors mention that the Argon gas at the centre of the bulb (size of a christmas tree bulb) reaches the temperature of the surface of the sun (6000C). Given the small size of the bulb, there is probably a very steep temperature gradient (otherwise the glass tube would melt). But the energy is dissipated by emitting light of all wavelengths, not just in the infra-red region of the spectrum. I'd be worried about getting sunburn or cataracts from something like this.

    --
    Vintage computer adverts: http://www.vintageadbrowser.com/computers-and-software-ads
  2. Re:Light pollution by Pictish+Prince · · Score: 4, Interesting

    The /. moderation system clearly does not work well. In response to the "troll", however, you don't need to put the telescope somewhere dark on the moon. Having no atmosphere, the moon does not present any difficulties for daytime telescopy since there's no scatter into the objective.

    --
    Only his tendency toward a dazed stupor prevented him from screaming aloud.
  3. Re:Short answer.... by symbolset · · Score: 5, Interesting

    Time to add nimp.org to your hosts file. The link is an auto redirect from rds.yahoo.com to members.on.nimp.org. This is how Yahoo redirects search results to find out who clicked what. Yawho? search results are thus no longer safe to click. For best results, add rds.yahoo.com to your hosts file or equivalent blocker as well.

    members.on.nimp.org resolves to poulet0.zoy.org. The IP address is [80.65.228.130]. Best to block that as well. The DNS administrator for this server is Slashdot User "Sam H", UID 3979.

    Somebody at slashdot should have a look at our anonymous coward's IP address. It would be nice if we could quit this nonsense. I hope this isn't some troll that bought a low UID in the auction.

    And maybe some slashdotter in Paris could call Sam and ask him to fix his compromised server. It does look like someone truly nasty took it over in August of 2005. Big Debian fan this one. Likes the GNAA routine and the whole bit.

    I'm not certain about pinning this on Sam. sam.zoy.org resolves to a different IP. One of you intertubes wizards want to weigh in here?

    --
    Help stamp out iliturcy.