Check out the Oct. 4 _Science News_. A tiny tungsten lattice has wavelength sized holes that allow for an intense light in a narrow bandwidth.
Recently people here were talking about light "rectifiers" and even I was wondering how to get light out of the nooks and crannies of a spiraled or folded fluorescent tube.
Let's hear it for Shawn Lin of Sandia Labs!
Bret Cahill
... Once he gets it working.
-- http://inquisitor.i.am/ | mailto:inquisitor@i.am | Ian Stirling. ---------------------------+-------------------------+-------------------------- He had been eight years upon a project for extracting sunbeams out of cucumbers, which were to be put in vials hermetically sealed, and let out to warm the air in raw inclement summers. -- Jonathan Swift, "Gulliver's Travels" (1726)
Assuming that this all pans out. It'd be around 5% less efficient than fluorecants tubes, and around
50% as efficient as the best floodlights.-- http://inquisitor.i.am/ | mailto:inquisitor@i.am | Ian Stirling. ---------------------------+-------------------------+-------------------------- Paranoia: A game for the whole family, and anyone else who might be watching.
We've been using compact florescent lamps, and these are a great cost savings in electricity. The 15 watt units put out about the same light as a
60 Watt or a bit better. I tested their output with a light meter, and found these to radiate the rated amount of light.You can expect an overall savings of about 40% to 50% over their lifespan, when including the purchase price. If you calculate the power savings alone, the savings is about 80%. They are more expensive to purchase, but make up for the difference over their lifespan.
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Greetings,
Jerry Greenberg GLG Technologies GLG ========================================= WebPage
Recently people here were talking about light "rectifiers" and even I was wondering how to get light out of the nooks and crannies of a spiraled or folded fluorescent tube.
Let's hear it for Shawn Lin of Sandia Labs!
Bret Cahill
I mentioned the Sandia bulb because apparently it isn't feasible to scale down compact fluorescent for bicycle and flash lights where you REALLY want efficiency.
A tungsten sliver sounds perfect for small spot lights.
"Jerry G." >We've been using compact florescent lamps, and these are a great cost
The best part about compact fluorescent is you don't have to change bulbs all the time.
The worst part is a lack of lamp and fixtures. I checked out Home Depot and found nothing.
Dollar Store now sells them so they may already be much more cost effective than that. There's no warranty on Dollar Store stuff, however. I'll just have wait and see.
Bret Cahill
I have tested two brands of dollar store compact fluorescents for efficiency. Results: To varying extents below that of other compact fluorescents but exceeding that of incandescents and halogens. No results on my end yet for life expectancy. I do have results on color appearance and partial results on color rendering - definitely worse than those of nearly all non-dollar-store compact fluorescents for those of warmer color, and not as bad but subpar in a cooler color that I do not expect to be favorable for most home use. Also generally available in lower wattages of 13 watts or less, except I have seen one 18 watt model of worst efficiency that I ever saw among compact fluorescents, tied-for-worst-color-rendering among compact fluorescents in my experience, and it claimed to be equivalent to an 85 watt incandescent while in my experience is about as bright as a 40 watt one.
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- Don Klipstein ( snipped-for-privacy@misty.com)
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