Measuring Light

Colors of light
Light beams

Photospectrometry is the quantitative measurement of the reflection or transmission properties of a material as a function of wavelength.

At Berkeley Lab we are at the forefront of utilizing this science to save energy and money in windows research.

We use photometers, known as spectrophotometers, that can measure a light beam's intensity as a function of its color (wavelength). With this information we are able to assess the heat and light coming in through a window and make adjustments to improve energy efficiency.