It’s no secret that lighting designers must wear many hats, but according to the Illuminating Engineering Society of North America (IESNA), the actual number of those hats might surprise you. A review ...

The definition of light power density. Today's lighting requirements for buildings. How to calculate LPD. Essentially, light power density (LPD) equates to all of the power consumed by light fixtures, ...

Troy, N.Y. – The emergence of electric lighting at night nearly a century ago has positively affected countless aspects of human life, ranging from improved safety and security to stronger economic ...

Joel Spahn is a Software Developer for Lighting Analysts, Inc. and Lead Developer of ElumTools, a lighting calculation add-in for Autodesk® Revit®. He is also author of Lighting Analysts’ Flash-based ...