A hearing last week on revisions to East Hampton Town’s 2006 “smart-lighting” law, designed to reduce nighttime sky glare, centered on the Kelvin level of outdoor lighting, a measure of the light color spectrum of a particular bulb.
Blue light, speakers agreed, creates more glare, interrupts night vision, and is less desirable. Speakers disagreed, however, on where the line should be drawn: a provision in the legislation sets a “goal” of lights at no more than 3,000 Kelvin, but would allow the planning board to approve Kelvin levels up to 3,500.