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A 230-volt LED filament lamp, with an E27 base. The filaments are visible as the eight yellow vertical lines. An assortment of LED lamps commercially available in 2010: floodlight fixtures (left), reading light (center), household lamps (center right and bottom), and low-power accent light (right) applications An 80W Chips on board (COB) LED module from an industrial light luminaire, thermally ...
One of the challenges is the development of more efficient green LEDs. The theoretical maximum for green LEDs is 683 lumens per watt but as of 2010 few green LEDs exceed even 100 lumens per watt. The blue and red LEDs approach their theoretical limits. [citation needed] Multicolor LEDs offer a means to form light of different colors.
For example, a 100-watt, 1000 hour, 120-volt lamp will produce about 17.1 lumens per watt. A similar lamp designed for 230 V would produce only around 12.8 lumens per watt, and one designed for 30 volts (train lighting) would produce as much as 19.8 lumens per watt. [76] Lower voltage lamps have a thicker filament, for the same power rating.
Auston Matthews scored his first goal since returning from injury as the Toronto Maple Leafs defeated the Chicago Blackhawks 4-1 on Monday night. John Tavares, Fraser Minten and Matthew Knies ...
A lawyer who represented two women who testified before a House ethics committee said they testified Matt Gaetz paid them for sex, per media reports.
A mother has been arrested and charged in the death of her 14-year-old daughter after witnesses saw her holding the girl's head underwater in a bathtub, according to police in Florida. Kelsey ...
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