Weber StateLight, Energy, and our Carbon Footprint


Dr. John E. Sohl
Weber State University

What are our options for lighting? How do they compare? How do we use light? This talk will address the complex issues associated with light sources, our eye response and the energy consumed to illuminate our world.  Topics will include how light is measured, how we use light in everything from transportation to residences, how efficacy is calculated (not trivial!) and what new technologies are on the horizon.
Compact Flourescent      LED

(Images from Philips, Jameco and AV Magizine.)
Sensitivity vs. Wavelength