david k warfel
Think Light Series A few weeks ago, I had the privilege to attend a presentation by Prem Kumar at the IES Maritime Annual Conference on Prince Edward Island. As is the case with good presentations on lighting, Prem got me thinking. If you have lighting on the outside of your home (or business), you are... Continue Reading →
Coffee, when poured into a mug and consumed, delivers a strongly desired boost of energy through caffeine. The same coffee, when poured onto the laptop, can be ruinous. The question of usefulness or harmfulness, applied to coffee, is answered by the use. The same can be true for light, especially outside. But indulge me a... Continue Reading →
In the beginning… I occasionally begin conference presentations or lectures with a brief look at the historic importance of light to our ancestors. I might mention ancient Egyptian worship of the sun-god Ra, tell stories of Helios riding his chariot into the sky to start the day as a Greek Titan, or quoting “God is... Continue Reading →
Satellite image from NASA via Blue Marble. Can you find your town? When it comes to light, it is hard to tell exactly how much we throw away. The International Dark Sky Association estimates that 35% of lighting energy is wasted making the sky glow. This is energy that has no discernible positive effect on... Continue Reading →
the language of light 