Beer's Law

Smartphone spectrophotometer
Use Your Smartphone as an "Absorption Spectrophotometer"
// Wednesday, March 30, 2016 • Tom Kuntzleman
A smartphone can be used in a remarkably simple and inexpensive way to teach your students about absorption spectroscopy and Beer’s Law. In short, light reflected off of colored construction paper is passed through a sample and detected by an RGB application on a smartphone.