What is the color rendering index& why does it mater? 

While you may not be familiar with the term colour rendering index or CRI for short , you are almost certainly aware of its effect- a light that gives off a too-green .-yellow, or -blue tone, making objects under its glow appear the wrong colour.Who hasn't been a victim of this terrible lighting in public restrooms, shops ,offices,and classrooms? 

Early fluorescents, CFLs, and LEDs are often the culprit thanks to low CRI scores, but thankfully these highly efficient lights have improvied, and they can now render crisp, accurate colours .You just need to select a bulb with the right rating for what you need. Keep reading to learn how. 

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