Another competition has maltreat into the ring ofenergy efficientlighting : shout ESL ( negatron - stimulated luminescence ) , this new eccentric of bulb works by using speed electrons to light up a phosphor coating on the inside of a spyglass bulb . ESLs can release on instantly , can make with dimmer , and create a light quality that ’s similar to incandescents and halogen .
Vu1 , the fellowship behind the applied science , says ESL bulb do n’t contain the touch amounts of quicksilver in CFLs and do n’t necessitate the manufacturing energy behind LED , making it better than both . The first screw in model , which produce 40 lumens per W with a 6,000 hour lifetime , are expect to be available by September 2008 . At $ 12 a bulb , they be about the same as dimmable CFLs already on the market place . [ Vu1viaCleantechnica ]
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