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LED (16 faqs)
       What is an LED 832
       Where have LEDs been used in the lighting industry? 830
       Why does the identical LED chip package lumen depreciate at different rates from manufacturer to manufacturer? 874
       What are the advantages to using LED luminaires? 856
       What's the difference between efficiency and efficacy? 820
       Why are LEDs considered a GREEN technology? 811
       Isn’t a lumen, a lumen (spec sheet comparisons)? 875
       How do you evaluate LED products? 820
       How are LEDs able to outperform HID? 849
       If an LED fixture has lower initial lumen output than a traditional HID light, how can LED claim to deliver lumens more efficiently than HID? 765
       How does ambient temperature affect LED efficiency? 865
       What is junction temperature? 794
       Do I have to replace LEDs? 871
       Why is the life span of an LED measured as lumen depreciation? 803
       How long is 100,000 hours? 830
       LED Catalog 824