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April 2015’s TOP TEN JimOnLight Posts
Ah, we love seeing what you love to read, what irks you, what you love, what you hate, and everything in between!
Like, for example,...
April 2013’s Top 20 Posts
April 2013 has not been a fully happy period in our industry, at least on the accidents front. Unfortunately I have to report that...
LER: Luminaire Efficacy Rating
Have you ever heard of a factor called the Luminaire Efficacy Rating, or LER?
Luminaire Efficacy Rating is exactly what it sounds like - it...