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Posts tagged "LER"

April 2013's Top 20 Posts

Posted by Jim - April 28, 2013 - JimOnLight Readers ROCK, JimOnLight.com Community, Top 20 Posts, top posts
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April 2013 has not been a fully happy period in our industry, at least on the accidents front.  Unfortunately I have to report that a lot of the top 20 posts that were read in 193 countries all over the world were stories I reported where injury or death to our stage hand brothers and [...]

Read More accidents, Amazon, AT&T Center, darth fader, Dean Williams, death, disasters, gaff tape, injury, JOL, LED, LER, Lumen Buddha Studios, Most Read Posts, mushrooms, Mycena lux-coeli, Pilobolus, Radiohead, rigger, safety, san antonio, Texas Stadium, top posts, Ultra Music Festival, Wicked Lasers

LER: Luminaire Efficacy Rating

Posted by Jim - October 20, 2009 - Architectural Lighting, Fluorescent Technology, Industrial, Lamps and Sources, Lighting Technology, optics, Science of Light, Standards and Compliance

Have you ever heard of a factor called the Luminaire Efficacy Rating, or LER? Luminaire Efficacy Rating is exactly what it sounds like – it is a measure of how efficient a luminaire is, which basically means "how much light does it put out based on how much energy it consumes?"  Imagine it as "miles [...]

Read More Ballast Factor, EFF, LER, Luminaire Efficacy Rating, Luminaire Efficiency, luminous flux, NEMA, reference ballast, TLL, Total Lamp Lumens

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Did You Know?

White flour mixed in water in a glass appears blue instead of white.  Why?  Blue light waves are scattered more strongly than red light waves.  Try it!  It's called Tyndall Scattering.

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Jim On Light’s primary writer is Jim Hutchison, Chief Design Consultant of Alive Lighting. Jim has several years of experience in the Entertainment Lighting industry. Jim is a member of USA Local 829.

This guy keeps us running. Fox is our Chief Web Strategist by night. By day, he is the Lead Electrics Technician for Cirque du Soleil’s KA. He also writes most of our safety related content.

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