Cycling Equipment · Public discussion

New Light 7 X More Efficient Than Conventional Incandescent

Started by Bretcahill · · Last activity · 5 posts · 889 views

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Cycling Equipment
Published
13 October 2003
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15 October 2003
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Bretcahill
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  1. Check out the Oct. 4 _Science News. A tungsten lattice incandescent is much more efficient than LEDs
    or even fluorescent -- and it's intense.

    There's no reason it cannot be scaled down. In fact, it may ALREADY BE small enough for bike lights.

    Let's hear it for Shawn Lin at Sandia Labs!

    Bret Cahill

  2. (BretCahill) may have said:

    Check out the Oct. 4 _Science News. A tungsten lattice incandescent is much more efficient than
    LEDs or even fluorescent -- and it's intense.

    There's no reason it cannot be scaled down. In fact, it may ALREADY BE small enough for
    bike lights.

    Let's hear it for Shawn Lin at Sandia Labs!

    Not having a sub to that mag anymore, I have to ask...

    Did they say anything about vibration tolerance and shock fracture resistance?

    --
    My email address is antispammed; pull WEEDS if replying via e-mail. Yes, I have a killfile. If I
    don't respond to something, it's also possible that I'm busy.

  3. Werehatrack <[email hidden]> in

    Quoted message said:

    Message-id: <[email hidden]> writes:

    . . .

    Quoted message said:
    Quoted message said:

    There's no reason it cannot be scaled down. In fact, it may ALREADY BE


    small

    Quoted message said:

    enough for bike lights.

    . . .

    Quoted message said:

    Did they say anything about vibration tolerance and shock fracture resistance?

    It uses a small sliver instead of the delicate wire in conventional bulbs.

    I'm guessing it is more rugged.

    Bret Cahill

  4. [email hidden] (BretCahill) wrote in message
    news:<[email hidden]>...

    Quoted message said:

    Check out the Oct. 4 _Science News. A tungsten lattice incandescent is much more efficient than
    LEDs or even fluorescent -- and it's intense.

    There's no reason it cannot be scaled down. In fact, it may ALREADY BE small enough for
    bike lights.

    Let's hear it for Shawn Lin at Sandia Labs!

    Aren't you being a bit premature? If I'm reading this press release correctly, they haven't yet
    gotten the bulb to produce notable quantities of visible light:

    sandia.govplanck lin.html

    But at least your priorities are right -- upon learning of a new discovery that may shatter one of
    the laws of physics and unleash untold new wonders, your first thought is for your bicycle. It
    reminds me of when I first heard about the (ultimately discredited) discovery of cold fusion. My
    first thought was, "Now maybe we'll finally get a decent bike light!"

  5. (BretCahill) said:
    Werehatrack said:

    Did they say anything about vibration tolerance and shock fracture resistance?

    I'm guessing it is more rugged.

    One thing they did say was that it radiates selectively in the infrared range, and that tungsten is
    not suitable for emission in the visible range.

    A lattice material for visible light emission may or may not be durable, because a suitable material
    has not yet been determined.

    The fact that the lattice is highly frequency-selective indicates that any visible light emitted
    would not be white.

    Chalo Colina

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