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LEDs Emerge to Fight Fluorescents [View All]

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jpak Donating Member (1000+ posts) Send PM | Profile | Ignore Fri May-11-07 04:40 PM
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LEDs Emerge to Fight Fluorescents
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The light bulb, the symbol of bright ideas, doesn't look like such a great idea anymore, as lawmakers in the U.S. and abroad are talking about banning the century-old technology because of its contribution to global warming.

But what comes next? Compact fluorescent bulbs are the only real alternative right now, but "bulbs" that use light-emitting diodes, or LEDs, are quickly emerging as a challenger.

LEDs, which are small chips usually encased in a glass dome the size of a matchstick head, have been in use in electronics for decades to indicate, for example, whether a VCR is on or off.

Those LEDs were usually red or green, but a scientific breakthrough in the 1990s paved the way for the production of LEDs that produce white light. Because they use less power than standard incandescent bulbs, white LEDs have become common in flashlights.

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  -LEDs Emerge to Fight Fluorescents jpak  May-11-07 04:40 PM   #0 
  - The LEDs will be much better than compact flourescents  lvx35   May-11-07 04:46 PM   #1 
  - Compact fluorescents have mercury- a major problem; how many applications can LEDs do?  philb   May-13-07 09:34 AM   #11 
     - Coal-fired powerstations put out far more Hg every day.  Nihil   May-14-07 06:51 AM   #14 
  - So, if a bulb costs $50 but uses 1/10 of the energy  ThomCat   May-11-07 04:48 PM   #2 
  - it's a "comparing apples to oranges" question....  mike_c   May-11-07 04:52 PM   #4 
  - Yes, but how long do you need to use that bulb  ThomCat   May-11-07 04:54 PM   #5 
     - from the OP...  jpak   May-11-07 05:00 PM   #6 
        - So not only do LED's last 50 times longer  XemaSab   May-13-07 10:21 AM   #13 
  - Depends on the bulb it replaces  Warpy   May-11-07 05:32 PM   #7 
  - I have a Stanley brand LED flashlight... 6 large white LEDs...  HypnoToad   May-11-07 04:50 PM   #3 
  - My newest led flashlight has 52 led's and uses 3 AA batteries  madokie   May-11-07 07:02 PM   #8 
     - Are they starting to make LED interior lights?  philb   May-13-07 09:42 AM   #12 
  - I have an LED flashlight  necso   May-11-07 08:24 PM   #9 
  - I've long thought about setting up an aquarium with LED lighting.  seasat   May-11-07 09:16 PM   #10 
  - I'm starting to play with LED lights...  hunter   May-14-07 11:13 AM   #15 

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