The Lighting Research Center (LRC) has published the results of a study investigating the effectiveness of Apple’s Night Shift for lessening the impact of nighttime iPad use on melatonin suppression, a marker of the circadian system. Night Shift permits users of Apple’s
By Willard Warren With every last watt being squeezed out of lighting, will codes even be needed? Has the adoption of LEDs and other solid-state devices influenced the mechanical design of buildings beyond the energy savings in lighting? Let’s look at the factors involved.
By Mark Lien A look back at fearless forecasts from 1999 doesn’t prevent a new list this year Some people save magazines. Piles of them unread, or issues that they may want to reread or think may have value someday are stored awaiting more time or greater interest. My pile