How is Lighting Measured & Controlled?

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Light is measured in temperatures and colors, the measurement used is Kelvin (K), the warm glowing incandescent lights we grew up with are listed as 2700K, with numbers increasing as the light gets cooler.  Mid-range is 3000K-4100K and gives the look of a cool white, with a sunny day blue sky measured between 5000K-6500K being a very cool blue light. Studies have shown that the cooler light increases alertness as well as improved mood, energy and may boost productivity and sales up to 40% and creativity up to 15%! 

When we are in blue light our melatonin is suppressed, we feel energized and are more productive, we are more alert, think of how you feel on a bright sunny day.  Light sets the mood, in areas where you are wanting to increase cooperation and a sense of comfort you will want a warmer light, in production areas a brighter, bluer light is needed. 

I have had the opportunity to work with employees who have ADA’s because of the lighting in an office.  Also, I’ve worked with people who are diagnosed with circadian disruption and have trouble getting to work in the morning, others who suffer from intense eyestrain and headaches.  All have been successfully remedied with proper lighting.

Since first writing this article I have also had the opportunity to provide a tunable lighting product for a person suffering from vertigo, he is very satisfied with the results.